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Djunaidi, Zulkifli. "Health risk assessment at hydro cracker complex oil and gas company". Majalah Kesehatan Indonesia 4, nr 2 (20.10.2023): 77–88. http://dx.doi.org/10.47679/makein.2023171.
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The hydro cracker complex (HCC) operating area is one of the areas with the most use of chemicals, and several workers complain about the noise in that area. This research determines the level of health hazard risk through a health risk assessment (HRA) focusing on physical, chemical, and biological hazards in the HCC area aims to improve the health status of workers and as a basis for developing occupational health programs to minimize the risk of occupational diseases. This study used primary data (walkthrough survey, interviews, heat stress measurements, noise, lighting, chemicals, fungi, and bacteria) with a cross-sectional method referring to the International Council on Mining & Metals (ICMM). The dangers of gasses and chemicals are the most common hazard in the HCC area. Based on the risk assessment, five hazard ratings with the highest risk were obtained, namely noisy environment (extreme), H2S gas (extreme), heat stress (extreme), NH3 gas (high risk), and hydrocarbon vapors (high risk). Existing controls and control recommendations must be applied comprehensively and consistently so that the company can accept the resulting residual risk value. Abstrak: Area operasi hydro cracker complex (HCC) merupakan salah satu area yang paling banyak menggunakan bahan kimia, dan beberapa pekerja mengeluhkan kebisingan di area tersebut. Penelitian ini menentukan tingkat risiko bahaya kesehatan melalui health risk assesment (HRA) yang berfokus pada bahaya fisik, kimia, dan biologi di area HCC yang bertujuan untuk meningkatkan status kesehatan pekerja dan sebagai dasar untuk mengembangkan program kesehatan kerja untuk meminimalkan risiko penyakit akibat kerja. Penelitian ini menggunakan data primer (walkthrough survey, wawancara, pengukuran tekanan panas, kebisingan, pencahayaan, bahan kimia, jamur, dan bakteri) dengan metode cross-sectional mengacu pada International Council on Mining & Metals (ICMM). Gas dan bahan kimia merupakan bahaya yang paling umum terjadi di kawasan HCC. Berdasarkan penilaian risiko diperoleh lima peringkat bahaya dengan risiko tertinggi, yaitu lingkungan bising (ekstrim), gas H2S (ekstrim), tekanan panas (ekstrim), gas NH3 (risiko tinggi), dan uap hidrokarbon (risiko tinggi). Pengendalian yang ada dan rekomendasi pengendalian harus diterapkan secara komprehensif dan konsisten agar perusahaan dapat menerima nilai residual risk yang dihasilkan.
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Zhu, Jian An. "Case Study of Entrepreneurship and Family Business Succession on the View of Life Cycles". Advanced Materials Research 468-471 (luty 2012): 484–87. http://dx.doi.org/10.4028/www.scientific.net/amr.468-471.484.
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In the most common cases, the first generation creates his business, accumulates wealth and waits for the right chance to hand them over to the second generation. The case study on Fotile Co. provides a perspective of both entrepreneurship and succession of family business. In 1996, Mao Li Xiang and his son, Mao Zhong Qun, started together a business on kitchen products. On the view of product life cycle, Mr. Mao Senior produced the clip reeds subcontracting for the state-owned TV set company and electric gas-lighting for international trade which were manufactured with imitation and at last waned after several years, until in 1996 he devoted himself to the third products, Chinese kitchenware, and beat Western technology with domestic technology and design in meeting the needs in Chinese kitchens. On the view of his individual life cycle, Mr. Mao Senior began with the accountant and salesman in commune and brigade enterprise in the 1970’s, manager of in the township and village enterprises in the 1980’s and the owner of family business in 1990’s when he handed over the right of control and finished the professionalization of management, the upgrading of enterprises as well.
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Tang, Yihong, Baowen Wei, Bin Du, An Li i Chaoyang Jin. "Research on the Applicability of Integrated Earth Lifting Machine for 500KV Transmission and Substation Project in Highland Area". Frontiers in Sustainable Development 3, nr 12 (22.12.2023): 23–27. http://dx.doi.org/10.54691/tyqgy237.
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In the power construction project, the tower foundation deep pit operation is a fundamental and important process, because of its operation point of the geological foundation structure complex and changeable, large amount of work, many dangerous factors and difficult to observe and identify, the construction is easy to cause safety accidents. State Grid Gansu Power Company has developed a set of intelligent equipment for deep foundation pit operation which is easy to operate, safe, reliable and complete in function, relying on the equipment to actively and timely discover the danger and early warning, and automatically take effective measures to strengthen the protection of personnel, crack the problem of safe operation of deep foundation pit and prevent the occurrence of infrastructure safety accidents. Since this project is located in the plateau area of Tibet, it is intended to study the applicability of the integrated deep foundation pit operation intelligent machine in the plateau area through this project. This project adopts "integrated deep pit operation intelligent machine"; this equipment is specially designed for a series of problems encountered in deep pits and other limited spaces, it integrates a number of practical functions: electric lifting, real-time gas detection, intelligent air supply, automatic sound and light alarm, emergency rescue, differential hanging point, soft ladder hanging point, lighting power, etc. It aims to protect the lives of construction personnel, improve the safety and reliability of construction, enhance construction efficiency, and is a kind of equipment with convenient transportation, installation and operation, diversified and integrated functions and intelligent control.
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Yuksek, Bekir Z., i Ulan Dakeev. "Management of Urban Parking Lot Energy Efficiency with the Application of Wind Turbine and LED lights". Bulletin of Electrical Engineering and Informatics 3, nr 1 (1.03.2014): 9–14. http://dx.doi.org/10.11591/eei.v3i1.180.
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A study of a parking lot lighting of a large manufacturing company in Iowa was implemented to evaluate monthly energy consumption. Mercury light bulbs with 227W ratings on the light poles were replaced with low power energy efficient LEDs to increase the overall efficiency. Additionally, a small scale wind turbine was installed to supply power to experimental light poles. Migration from the current gas bulbs to the LED light results yielded about 60% energy savings, while capital gains due to the generation of wind energy returned about 80% savings per month which recovered initial investments on the assets. The environmental impact of this study cannot be neglected and it also provided opportunity for STEM education in colleges and wind energy awareness in the society in Iowa by showing benefits from current experiments. Details of the methods and analyses should be particularly useful to urban planners because they show how standard references on investment in automobile parking should be modified to include efficient energy management. The authors proposed new way to limit the cost of energy consumptions and environmental pollution on wildlife and human health. Research implications are discussed in terms of the impact of natural features in urban areas for reduction of green house gas emissions and promoting alternative energy sources.
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Sysoeva, Elena V. "A Retrospective of Artificial Lighting from Ancient Times to the Present Day". Light & Engineering, nr 02-2023 (kwiecień 2023): 77–84. http://dx.doi.org/10.33383/2023-002.
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A retrospective of the origin and development of light sources is given depending on the history of human development and the creation of fundamental sciences: mathematics, physics, and electrical engineering. Four stages of development and creation of artificial light sources in buildings and structures are proposed. A detailed description of the pre-electric period (regular use of fire by the man; the Bronze Age, the middle Ages and modernity) is presented. The second period begins with the opening of the voltaic arc, which can be called the beginning of the electric period. Illustrations of each discovery with lighting of rooms and buildings of the corresponding period are presented. The period of inventions, which led to the beginning of the third, gas lighting period, is described. This period includes, among other things, the combined use of gas lighting devices with electric lighting and combined gas-electric lighting. The fourth period begins at the beginning of the third millennium and continues to the present. During this period new alternative lighting sources appear along with incandescent lamps and gas-electric sources. Lighting engineering is becoming an independent branch of science and is being studied in all universities of our country, which increases the rate of appearance of new inventions and types of calculation. There are such lighting sources as fluorescent and LED lamps and fixtures. At the end of the article, the opinions of scientists on the prospects for the development of artificial lighting according to various criteria are presented. The article is provided with a large number of illustrations for all stages of development.
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Pai, V. S., i Chetan V. Hiremath. "SELCO India: Solar Energy for the Underserved". South Asian Journal of Business and Management Cases 5, nr 2 (grudzień 2016): 145–54. http://dx.doi.org/10.1177/2277977916665929.
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Solar Electric Lighting Company (SELCO) was established in 1995 to serve the energy needs of people living at the base of the pyramid in Karnataka, India. The CEO, Dr Satish Hande, focused on developing need-based customized solar energy products for off-grid customers. During the initial years, the company faced financial problems to meet its operational needs, which was eventually overcome. Solar Electric Lighting Company came up with several innovative products that increased productivity of customers. Though the products sold were priced low, care was taken to ensure that product quality was not compromised. The company subsequently faced several challenges. The appointment of dealers in lieu of its own branches did not deliver desired results. Increase in input costs landed SELCO in losses. Pressure from investors for profits when the company was facing financial crisis was the toughest of them all. Having overcome the obstacles, SELCO became profitable, expanded operations in six states of India and installed 200,000 solar lighting systems in a period of two decades. Several growth options presented themselves to Dr Hande. The most prominent being the need to make a choice of staying focused on customized products for the poor or cater to the upmarket, high-growth and profitable segment.
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Sigura, Verda, Ellen Kathrine Hansen i Henrik Clausen. "Designing Natural Atmosphere in Office Environment Through Daylight Responsive Dynamic Lighting". IOP Conference Series: Earth and Environmental Science 1099, nr 1 (1.11.2022): 012029. http://dx.doi.org/10.1088/1755-1315/1099/1/012029.
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Abstract Often the criteria for designing office lighting is to increase efficiency through a bright and evenly distributed lighting. Yet, research has found that this static lighting leads to an unstimulating, boring, and dull luminous environment that supports neither task focus, nor a pleasant atmosphere. The goal of this paper is to create a closer connection to a natural light environment by designing an office lighting that inspired by light as natural phenomenon creates a lively and more nature-based atmosphere. We developed a lighting design with focus on analysing the perceived atmosphere as a metric for a dynamic lighting design for a meeting room of a real estate company in Denmark. Through a mixed method approach, we explore the design factors that determine the desired natural atmosphere. Our design aims at enhancing the function of the meeting room as a formal space where negotiations are held by 1) presenting the identity of the company to the business partners; and 2) supporting employees’ sense of belonging to the company culture. As a result, our lighting design creates a lighting hierarchy in line with the architectural elements of the space, complementing daylight through electric lighting in a dynamic way, accounting for both sky-type and daylight inflow.
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Reich, Leonard S. "Lighting the Path to Profit: GE's Control of the Electric Lamp Industry, 1892–1941". Business History Review 66, nr 2 (1992): 305–34. http://dx.doi.org/10.2307/3116940.
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Founded in 1892, General Electric set out to dominate the American electrical industry. This article is an explanation of how the company accomplished this goal in the highly profitable electric lamp (“light bulb”) market. GE's techniques included technology leadership through in-house development and the purchase of patent rights, discriminatory agreements with suppliers based on market power, and cartel arrangements of various sorts, both foreign and domestic. The article shows how one company was able to use financial and market power, combined with early control of a rapidly developing technology, to gain and then hold a major American market for half a century.
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Ida, Toshiaki, Michio Negishi, Tunemichi Sekiguchi, Masayuki Takano, Koichiro Nakada i Hisashi Sato. "Lighting control equipment for Tokyo Electric Power Company R & D Center". JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 79, Appendix (1995): 255. http://dx.doi.org/10.2150/jieij1980.79.appendix_255.
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Batista Lopes Gonçalves Junior, João, Livia Da Silva Oliveira, David Barbosa de Alencar i Jorge De Almeida Brito Junior. "Electric Energy Reuse of Plastic Injection Machine Motors for Lighting Circuit in a Manaus-Amazonas Industrial Pole Company". International Journal for Innovation Education and Research 7, nr 10 (31.10.2019): 637–45. http://dx.doi.org/10.31686/ijier.vol7.iss10.1810.
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This work aims to reuse the electric energy used in three-phase induction motors of an industrial plastic injector for the lighting circuit of the same warehouse where the injectors are located, thus eliminating the need to use the energy of the electric company. Any resource that reuses electricity with better efficiency becomes essential today, making it a solution for industries that are thinking of saving the energy used in the productive processes in the manufacture of goods.This project uses a synchronous generator coupled to a three-phase induction motor of a plastic injector, which will reuse the electrical energy used of the induction motor to mechanically drive the synchronous generator, that will be able to generate enough electrical power in its coils for a 47-light shed lighting circuit, thus eliminating the need to use utility power, saving a portion of the energy usage costs on the monthly bill. This installation of the synchronous generator was performed on equipment of the company Moto Honda da Amazônia, which has a 24-hour operating regime for six days a week.
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Sulistyowati, Ar Raafi Pangestu i Sigit Setya Wiwaha. "Analisa Audit Energi Listrik di PT. Ispat Bukit Baja Kota Bekasi". Elposys: Jurnal Sistem Kelistrikan 9, nr 3 (16.02.2023): 115–20. http://dx.doi.org/10.33795/elposys.v9i3.644.
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PT. Ispat Bukit Baja is a company engaged in the steel production industry. Every component production uses electricalenergy as the main source. With the main load of lighting, air conditioning, and electric motors, the use of electricity in this company is verylarge and important. An audit energy needs to be carried out because the value of Energy Consumption Intensity in 2020 is 251 kWh / m2/ year and in 2021 it is 221 kWh / m2 / year and the value of Specific Energy Consumption in 2020 is 0.26 GJ / Ton and in 2021 is 0.29GJ/Ton. The energy audit method used is to calculate the value of Energy Consumption Intensity and Specific Energy Consumption. Thesavings opportunities made are on the air conditioning system, lighting system, and electric motor load. From the results of the analysisand calculation of savings in the air conditioning system, savings of 50.1% or 67.70 kWatt were obtained using a psychrometric diagramto determine the cooling system according to the needs of the room, then for the lighting system, savings of 21.9% or 6 kWatt by replacingthe installed lighting system with energy-saving lamps, then the load of the electric motor is using capacitor to improve the power factorvalue which was originally 0.77 to 0.85 with the aim that the motor speed does not change which will result in the precision of the productionobtained savings in the use of apparent power of 7.13% or 126.52 kVA. So that the results of the apparent power savings can be used forbackup. The total recommended power saving obtained from the calculation results is 73.7 kWatt. So based on the calculation of the energyaudit that has been done, it can reduce production costs and energy use efficiency
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Bauer, I. O., T. D. Mayer i W. T. Rees. "Tree Replacement Program at Baltimore Gas and Electric Company". Arboriculture & Urban Forestry 16, nr 2 (1.02.1990): 42–44. http://dx.doi.org/10.48044/jauf.1990.013.
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A wonderful opportunity for community improvement materialized as the "Greening of Dundalk". A well coordinated effort between government agencies, private enterprise, university research and community volunteers resulted in a highly successful beautification program. The Baltimore Gas and Electric Company (BG&E) was able to participate by removing designated trees beneath the power lines and supplying flowering crab apples as replacements. The trees were obtained under the guidance of the Penn State sponsored Municipal Tree Restoration Program (MTRP) of which BG&E is an active member. BG&E expects to recoup it's initial expenditures in approximately 3.3 years.
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Saim Memon, Robert Dawson, Zafar Said, Siamak Hoseinzadeh, Ali Sohani, Ali Radwan i Takao Katsura. "Daylighting, artificial electric lighting, solar heat gain, and space-heating energy performance analyses of electrochromic argon gas-filled smart windows retrofitted to the building". International Journal of Solar Thermal Vacuum Engineering 3, nr 1 (25.08.2021): 50–72. http://dx.doi.org/10.37934/stve.3.1.5072.
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The inevitability to reduce CO2 emissions to avoid preventable climate change is widely being yelped. To minimise the impact of rapidly changing climate, this paper presents novel research findings and contributes to developing electrochromic argon gas-filled glazed smart windows retrofitted to the building with IoT based transparency control. In this, the comparative analyses of the daylighting, electrical lighting, solar heat gain, and space-heating load of the building using the dynamic thermal and electric lighting modelling methods based on real weather temperatures are presented. The daylighting analysis results implicate that the building with electrochromic argon gas-filled smart windows reduced 19% of daylight illuminance during summer months compared with the building retrofitted with double air-filled glazed windows daylight factor remains consistent. As such, the solar heat gains analysis results implicate at least 50 % annual solar heat gain reduction predicted in the building with electrochromic argon gas-filled smart windows in comparison to double air-filled windows. This leads to the conclusion of the space-heating energy analysis that implicates the highest contribution to the space heating demand is the solar heat gain caused by double air-filled glazed windows. The results confirm that the LED artificial electric lighting system requires fewer fittings and thus total power load compared to the fluorescent lighting system, throughout the year, to the building with electrochromic argon gas-filled glazed smart windows. The daylight controls are linked to the electrochromic argon gas-filled glazed smart windows, so they only operate when the glazing is tinted, or the daylight level drops below a set level; this will reduce the energy usage and also lower the space heating of the room.
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Ida, Toshiaki, Takashi Inoue, Hiromi Tomiya, Michio Negishi, Tsunemichi Sekiguchi, Masayuki Takano i Koichiro Nakada. "Effect of Lighting control system for Tokyo Electric Power Company R & D Center". JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 80, Appendix (1996): 218–19. http://dx.doi.org/10.2150/jieij1980.80.appendix_218.
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Iwabuchi, Kunihiko. "Effect of Lighting Control System for Tokyo Electric Power Company R & D Center". JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 82, nr 9 (1998): 747–49. http://dx.doi.org/10.2150/jieij1980.82.9_747.
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Sudarto, Ferry, Jahwahir Jahwahir i Ryan Satria. "SISTEM KONTROL ROLLING DOOR MENGGUNAKAN SMARTPHONE BERBASIS ANDROID OS PADA PT. INDONESIA STANLEY ELECTRIC". CCIT Journal 9, nr 1 (29.09.2015): 44–50. http://dx.doi.org/10.33050/ccit.v9i1.397.
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PT Indonesia Stanley Electric is a company founded to meet the needs of vehicle lighting equipment 2 wheel and 4 wheel PT ISE start molding and light industry preferred the lighting equipment of motor vehicles, and the next stage is planning the manufacture of electronic komponoen motor vehicle. Stanley company headquartered in Japan until now PT ISE has 34 branch companies in several countries outside of Japan. Stanley Company in Indonesia is a subsidiary branch to 24, which is named PT Indonesia Stanley Electric (PT ISE). PT Indonesia Stanley Electric is located at Jl. BhumiMas 1 No. Cikupamas Industrial Area 17, where the company is using the Rolling Door as a means of exit and entry of Forklift who still use manual systems and for operation by pressing the open or close button made by a another operator to operate Rolling Door. Smartphones with Android operating system more widely available in the market at a more affordable price. Android operating system itself is open source operating system that can be modified according to user needs. The control system uses the Android-based smartphone is used to control the Rolling Door from a certain distance without having to interact directly with the Rolling Door. In this study, a prototype device Rolling Door control system automatically uses the Android-based Smartphone controls associated with the program of the microcontroller ATMega8 implanted using the Bluetooth network. In a mechanical system that is functioning there is a DC motor to drive the Rolling Door, the system switches to use proximity switches to determine the stopping point of the system. For electronic systems use 12 volt dc relay circuit, and using bluetooth module HC-05. With this system the user can operate the tool to open and close the Rolling Door via Smartphone, in addition to be used as a means of communication but also used as a device that is communicated to control a hardware device.
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Chevalier, A., D. Luce, C. Blanc i M. Goldberg. "Sickness absence at the French National Electric and Gas Company." Occupational and Environmental Medicine 44, nr 2 (1.02.1987): 101–10. http://dx.doi.org/10.1136/oem.44.2.101.
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Brown, D. L., J. W. Skeen, P. Daryani i F. A. Rahimi. "Prospects for distribution automation at Pacific Gas & Electric Company". IEEE Transactions on Power Delivery 6, nr 4 (1991): 1946–54. http://dx.doi.org/10.1109/61.97743.
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Mazurek, Paweł A., Aleksander Chudy i Piotr Hołyszko. "Assessment of Electromagnetic Fields in Trolleybuses and Electric Buses: A Study of Municipal Transport Company Lublin’s Fleet". Energies 17, nr 14 (11.07.2024): 3412. http://dx.doi.org/10.3390/en17143412.
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As electromobility and especially the electrification of public transportation develops, it is necessary to safeguard human health and minimize environmental impact. Electromagnetic fields generated by the current flowing through on-board batteries, installations, converters, propulsion, air conditioning, heating, lighting, or wireless communication systems in these vehicles may pose risks to drivers and passengers. This research investigates electromagnetic fields induced by extreme low-frequency currents and permanent magnets on electric and trolleybuses implanted in Lublin, Poland. The identification of electromagnetic fields concerned an electric bus model and two trolleybus models. A comparative analysis of the results obtained with the permissible limits in the environment was carried out.
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Murray, Stephen. "Electrifying the City: Power and Profit at the City of London Electric Lighting Company Limited". London Journal 43, nr 1 (2.08.2017): 72–91. http://dx.doi.org/10.1080/03058034.2017.1357939.
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Saes, Alexandre Macchione. "Modernizing Electric Utilities in Brazil: National vs. Foreign Capital, 1889–1930". Business History Review 87, nr 2 (2013): 229–53. http://dx.doi.org/10.1017/s0007680513000445.
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Signs of improvement in the early twentieth-century Brazilian economy enabled a process of urban renewal. One of the most visible features of Brazilian urban modernization was street and house lighting, as well as electricity for tramways and industry. Conflicts between the Canadian company Light and the Brazilian firm CBEE over the supply of urban electricity to Brazil's main economic centers—Rio de Janeiro, São Paulo, and Salvador—mirror the contradictions in the country's capitalist formation during the first decades of the twentieth century. From an emerging market view, and through political debates, this article addresses the development of electric utilities in major Brazilian cities.
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Pati, Rakesh Kumar, i Niharika Garud. "SELCO: lighting rural India". Emerald Emerging Markets Case Studies 1, nr 3 (1.07.2011): 1–19. http://dx.doi.org/10.1108/20450621111183519.
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Subject area Social entrepreneurship, Sustainability and Human Resource. Study level/applicability The case study is relevant for students of entrepreneurship and social entrepreneurship. This case can be used as a case in strategy (growth strategy), marketing and innovation subjects as well. Case overview The case study revolves around Mr Harish Hande and his efforts to build a for–profit social enterprise Solar Electric Light Company (SELCO) to provide electricity to poor and under–served. Harish focused on providing cheap, clean and sustainable energy sources to rural customers at bottom of the pyramid of the society. From the conception of SELCO, Harish has been on a roller–coaster ride of success and failure. Harish has used the problems as a learning ground and improved his business model successfully. But, when Harish tried to scale his operations in 2005–2006 he failed miserably. Some errors in the decision coupled with external pressure had brought SELCO to a verge of collapse. Owing to the determination of Harish and his team, SELCO was able to revive from the difficult times to generate profits again. Harish now again wants to expand but this time he would not take any chances. He wants to analyze and discuss every possible issue, he might face during his expansion plans. Expected learning outcomes The key learning aspects of this case is to understand importance and practice of talent management. The case also highlights the best practices that SELCO uses to reach its clients and provide them complete solution. Supplementary materials Teaching note.
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Rosdiana, Arya Wiyangga Pradana, Muhammad i Mutammimul Ula. "LAMP MODIFICATION FROM HPLN TO LED TECHNOLOGY FOR SAVING ELECTRICAL ENERGY IN STREET LIGHTING". MULTICA SCIENCE AND TECHNOLOGY (MST) JOURNAL 3, nr 1 (13.04.2023): 161–68. http://dx.doi.org/10.47002/mst.v3i1.423.
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Energy Efficiency is a business that is carried out with the aim of reducing the amount of energy needed, in using an equipment or even an energy-related system. In its development in the field of lighting, LED (Light Emitting Diode) lamps are now starting to be used as lighting lamps for homes, industries and factories. In Indonesia, the use of LED lamps in lighting is still rarely used, because the price of LED lamps is quite expensive when compared to ordinary lamps. With the saving of electric power through the use of LED lights, the problem of operational costs will be easy to overcome. Indeed, the price of this LED lamp is a little expensive, but with the research on the comparison of the use of this LED lamp with HPL-N type lamps, the industry will consider using this LED lamp with a generally accepted application method to reduce energy expenditure. The previous conditions for Jalan Dolok Merawan used HPLN 250 Watt lamps with a handlebar angle of 24,920 ornaments, the resulting light intensity was 2189 Candela, the intensity of the resulting lighting was 97.94 Lux and has now been changed to make it more optimal to use 120 Watt LED type lights, the height of the pole used is 4 meterss with an ornament handlebar angle of 24.920, light intensity of 1242 Candella, lighting intensity of 55.33 lux. The results of this illumination intensity are in accordance with the standard determined by BSN SNI regarding Collector road class 3-7 Lux. The results achieved after the process of modifying HPL-N lamps to LEDs are that they can reduce the use of electrical energy in the lighting system and achieve efficiency for electric power consumption so that they can provide added value to the company in reducing the company's operational costs.
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Song, Seung-Yeong, Hye-Sun Jin, Soo-Yeon Ha, Sung-Im Kim, You-Jeong Kim, Soo-Jin Lee i In-Ae Suh. "Detailed Office Building Energy Information Based on In Situ Measurements". Energies 13, nr 12 (12.06.2020): 3050. http://dx.doi.org/10.3390/en13123050.
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Energy consumption in the building sector has been continuously increasing, and energy conservation in this sector has become critical for achieving the national goal of reducing greenhouse gas emissions. In South Korea, information on energy sources (electricity, gas, district heating, etc.) is provided, but detailed energy use information, such as space heating, space cooling, domestic hot water (DHW) and lighting, is insufficient to establish a specific action plan for energy savings. Energy use information by end-use can be acquired through actual measurements in close proximity to actual energy use. This information reflects the effects of complex elements such as building operations and residential characteristics, but it is also insufficient. This study presents statistical data on energy use intensities (EUIs) and greenhouse-gas-emission intensities by end-use, derived by measured data collected from 48 sample office buildings in representative city from May 2017 to April 2018, and compares those with the U.S. commercial building energy consumption survey (CBECS) 2012 report. The average site EUIs by end-use were in the following order: space heating > electric appliances (typical floors) > space cooling > lighting > air movement > DHW > vertical transportation > city water supply. With regard to the average primary EUIs by end-use, the magnitude relationship between electric appliances (typical floors) and space heating was opposite that of the average site EUIs. Vertical transportation and DHW exhibited almost the same average greenhouse-gas-emission intensities as those of the average annual primary EUIs. The average site EUIs in the CBECS 2012 data were slightly different from those in this study: electric appliances, etc. > space heating > air movement > lighting > space cooling > DHW. The number of office buildings monitored in this study increased until 2019 (the number of total samples: 85), and the intensity data by end-use will be brought up to date through continuous measurement.
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Jun, Lu, Yan Zhang i Ling Fu. "An Integrated Study on Engineering of Replacing Gas-Discharge Source with Solid Electric Light Source Based on the Design Standard of Architectural Lighting". Advanced Materials Research 694-697 (maj 2013): 3006–11. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.3006.
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Through field test of LED and fluorescent lamp, the strengths of the former are contrasted and analyzed on its illumination, energy saving and consumption reducing, and life cycle cost based on the design standard of lighting, which proves that it has the operability to take LED as the light source for replacement in architectural lighting. Centering on the achievement of standard requirement of illumination, some feasible specific methods and problems to be noted are put forward.
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Altukhov, A. Yu, E. V. Ageeva, A. A. Gorokhov i A. S. Osminina. "X-RAY MICROANALYSIS OF ELECTRIC-SPARK COATINGS BASED ON TUNGSTEN-CONTAINING ELECTROEROSION POWDERS". Proceedings of the Southwest State University 22, nr 3 (28.06.2018): 29–39. http://dx.doi.org/10.21869/2223-1560-2018-22-3-29-39.
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The development of modern engineering requires improving the quality, reliability and durability of parts, components and mechanisms. One of the effective ways to solve these problems is the use of various functional coatings, including the method of electrospark alloying (EIL). The main electrode materials are mainly sintered hard alloys, the cost of which, due to the presence of expensive tungsten, is relatively high. One of the promising methods for producing powder from almost any conductive material, including solid alloy and high-speed steel waste, is the method of electroerosion dispersion (EED), characterized by relatively low energy costs and environmental cleanliness of the process. The purpose of this work was to conduct x-ray Microspectral microanalysis of the electrospark coating obtained by electrospark alloying on the UR-121 installation with the use of electrodes from a mixture of electroerosion powders of the VK8 (90%)+P6M5 (10%) brand obtained by electroerosion dispersion of solid alloy and high-speed steel waste in kerosene lighting. The electrode was obtained by mixing the powders in the ratio VK-8 (90%) + R6M5(10%), Electrospark coatings formed by the electrode on a sample of steel 30HGSA received at the installation UR-121 (production of the company PELM, Podolsk). In order to identify the distribution of elements on the surface of the electrospark coatings, with the help of energy-dispersion analyzer of x-ray radiation of the company EDAX, built into the raster electron microscope "QUANTA 200 3D", the spectra of the characteristic x-ray radiation at various points on the surface of the sample were obtained. On the basis of experimental studies aimed at conducting x-ray Microspectral microanalysis of the electrospark coating obtained by electrospark alloying on the installation UR-121 with the use of electrodes from a mixture of electroerosion powders of the brand VK8 (90%)+P6M5 (10%) obtained by electroerosion dispersion of solid alloy waste and high-speed steel in kerosene lighting, the content of the main elements in it is determined.
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Walker, J. Samuel, i Craig Miner. "Wolf Creek Station: Kansas Gas and Electric Company in the Nuclear Era." American Historical Review 100, nr 2 (kwiecień 1995): 612. http://dx.doi.org/10.2307/2169197.
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Bedford, Henry F., i Craig Miner. "Wolf Creek Station: Kansas Gas and Electric Company in the Nuclear Era." Journal of American History 81, nr 4 (marzec 1995): 1842. http://dx.doi.org/10.2307/2081862.
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Hirsh, Richard F., i Craig Miner. "Wolf Creek Station: Kansas Gas and Electric Company in the Nuclear Era". Technology and Culture 37, nr 2 (kwiecień 1996): 394. http://dx.doi.org/10.2307/3106849.
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Clark, John G., i Craig Miner. "Wolf Creek Station: Kansas Gas and Electric Company in the Nuclear Era". Western Historical Quarterly 25, nr 4 (1994): 549. http://dx.doi.org/10.2307/970393.
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Becker, D. L., R. H. Harshberger, J. C. Russell, D. Leggett, R. Frowd, S. Mokhtari, S. Rajagopal i A. G. Hoffman. "The Pacific Gas & Electric Company Energy Management System Overview—Unique Features". IFAC Proceedings Volumes 22, nr 9 (sierpień 1989): 273–77. http://dx.doi.org/10.1016/s1474-6670(17)53281-4.
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Sklyar, Aleksey, Iliya Korobko i Margarita Postnova. "Features of Heating Poultry Houses with Gas Stoves". Vestnik Volgogradskogo Gosudarstvennogo Universiteta. Serija 11. Estestvennye nauki, nr 2 (sierpień 2018): 76–79. http://dx.doi.org/10.15688/jvolsu11.2018.2.15.
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Currently, modern poultry farms are located in regions with different climatic conditions. On this basis, the component of the electric power is great in power engineering, the combined heating and ventilating systems, lighting and local heating of poultry farms in the territory of the Russian Federation are based on these constructions. Analysis of energy costs of poultry farms showed that, of the estimated options to reduce the cost of electricity for poultry farms, one of the most effective can be an alternative source such as the generation of its own electricity. Naturally, for biological production with a continuous technological cycle, such as poultry farming, we are not talking about 100 % replacement of power grids - they remain to cover 45-55 % of the needs of the factory and serve as a reserve for the rest.
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Zhang, Qi, Yin Hua Shen, Yun Long Wang i Hong Liang Li. "Optimal Distribution of Gases in Integrated Iron and Steel Works". Applied Mechanics and Materials 492 (styczeń 2014): 586–89. http://dx.doi.org/10.4028/www.scientific.net/amm.492.586.
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This paper analyzes the optimizing distribution problems between the by-product gas in gas tank and self-contained boiler in electric power plant in the iron and steel plant. We discuss factors which have effect on operating costs, such as the control of gas tank position, the change of fuel load of self-contained boiler in electric power plant, price change of outsourcing fuels and so on. We set corresponding penalty function in iron and steel company as well as establish the optimizing mathematical model in gas supply system according to these questions. It can be known through solving the model that the gap of gas supply and consumption can be solved by optimizing distribution between gas tank and self-contained boiler in electric power plant. After that, reducing the consumption of purchased fuels amount and the frequent changes of fuels load in boiler, improving the efficiency of power generation, achieving zero-emission, making the gas supply system operates securely, economically and stably can realize.
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Garrett, Terry J., i Steven W. Sorrell. "The Development and Application of System Analysis at Kansas Gas and Electric Company". Nuclear Technology 76, nr 1 (styczeń 1987): 105–12. http://dx.doi.org/10.13182/nt87-a33902.
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Melnyk, I., S. Tuhai, M. Skrypka, M. Surzhykov i I. Shved. "ANALYTICAL RELATIONS FOR CALCULATION THE CURRENT OF ARG DISCHARGE IN THE METALS’ VAPORS AT THE PHYSICAL CONDITIONS OF TECHNOLOGICAL PROCESS OF ELECTRON-BEAM DEPOSITION OF CERAMIC COATING". Information and communication technologies, electronic engineering 2, nr 2 (grudzień 2022): 123–32. http://dx.doi.org/10.23939/ictee2022.02.123.
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The article is devoted to the problem of calculation the value of current of non-self-sustained arc discharge, which is lighting and maintained in the metal vapours and active gases for porviding the chemical reaction between its in the technological process of evaporation of thin coatings. Obtaineed relations are generally based on Poisson equation for defining the distribition of electric field, Mendeleev – Clapeyron equation for defining the concentration of ions in saturated metals' vapours, as well as on equation of current continiouty in gas discharge. Formed set of equations for distribution of electric potential and discharge current in the spatial coordinates is transformed to cubic equation, which was solved analytically. Obtained simulation results are given and analyzed.
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Ozerdem, Sena, i Mehmet Sirac Ozerdem. "CALCULATING THE CARBON FOOTPRINT FOR ENVIRONMENTAL SUSTAINABILITY: THE CASE OF TED DİYARBAKIR COLLEGE (TÜRKİYE". PROFESSIONAL STUDIES: THEORY AND PRACTICE 28, nr 1 (5.06.2024): 80–89. http://dx.doi.org/10.56131/pstp.2024.28.1.257.
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It is crucial to promote awareness, particularly throughout society, regarding a topic that holds significant importance for our environment. This study was undertaken with the intention of making a contribution to research on carbon footprint, driven by this motive. In this study, the carbon footprint calculation of TED Diyarbakır (Türkiye) College was made using the IPCC Tier approach. The carbon footprint of 3 different capabilities, namely scope 1 (Natural gas, gasoline, diesel, fire extinguishers), scope 2 (electric) and scope 3 (Water consumption, services), were calculated. When Scope 1, Scope 2 and Scope 3 are evaluated together, it is seen that the amount of carbon footprint originating from Scope 1 is higher. Sources of emissions from Scope 1 include natural gas consumption, diesel and gasoline fuel consumption, as well as fire extinguishers. When the emission sources in the college were compared, it was determined that the highest carbon footprint was due to natural gas consumption within scope 1 (97.98%). Subsequently, it was determined that the carbon footprint was caused by existing vehicle shuttle within scope 3 (1.917%). Finally, it has been determined that the carbon footprint is caused by the existing electricity consumption within scope 2 (0.1%). It is stated that there are 2 reasons for the low carbon footprint caused by electricity consumption. The first is that the equipment used in lighting is LED, and the second is that there is no need for lighting fixtures due to the long lighting time of the day in our geography
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Nugroho Marsiyanto, Eko Prasetio i Aly Rasyid. "Evaluasi Pemilihan Electric Submersible Pump (ESP) Untuk Menggantikan Gas Lift (GL) Di Sumur X Lapangan Offshore Y". JURNAL BHARA PETRO ENERGI 1, nr 3 (19.12.2022): 12–21. http://dx.doi.org/10.31599/bpe.v1i3.1739.
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Well X is located in the offshore Y field, where there are 7 production wells, all of which use an artificial lift in the form of a gas lift. In this field, oil is produced from the N oil layer while the gas layer comes from the K layer. Well X was drilled in May 2013 with a target of N oil formation at a depth of 9,007 ft MD, slope (450) and 4-1/2" Liner completion. The initial production of well X was 1,632 BOPD; 5.3 MMSCFD; 0% BSW. Well X is the only well in the Y offshore field that does not penetrate the K gas formation, so gas production from nearby wells is used to produce oil from the N formation. well-to-well gas lift. Along with production time, the reservoir pressure in the N oil layer and K gas layer has decreased, so that oil production in well X has also decreased. With changes in company policy that optimize and increase gas production to increase gas sales to the industry around the company's operational areas since early 2017, the outgoing pressure on the Y platform has increased from 210 psi to 450 psi, causing a total oil well X could not pass through and produce due to high outgoing pressure on platform Y. Well X's last production data was on January 31 2017 with oil production of 179 BOPD and 1.25 MMSCD for gas production and gas lift injection of 0.75 MMSCFD, before finally shutting down. The selection of another artificial lift as a substitute for the gas lift has been carried out to revive well X later. Based on the alloy table made by Weatherford for the selection of artificial lifts for conditions on the Y field platform, ESP has many advantages and appropriate flexibility compared to other types of artificial lifts. The ESP type D1050N which is a mix flow ESP has been selected and after installation in well X in August 2019 it has successfully revived with a production test of 885 BFPD, 681 BOPD, and 23% water content on September 3 2019. ESP in well X has been in production for 2 years, until finally experiencing a leaky tubing problem in September 2021 and requiring a new tubing replacement job along with a new ESP replacement to revive the X well. Reference: Brown, E., Kermit, (1977). The Technology of Artificial Lift Method”, Volume 2a, Oklahoma; Pennwell Publishing Company. Brown, E., Kermit (1980). The Technology of Artificial Lift Method”, Volume 3a, Oklahoma; Pennwell Publishing Company. Data-data Lapangan Sumur X Lapangan Offshore Y. (2019-2021). Gabor, Takack. (2009). Electric Submersible Pump Manual Desingn, Operations and Maintenance. United States of America: Gulf Publishing Company. Weatherford. (2005). Artificial Lift System.
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Rahmawati, Ayu, I. Made Suartika i Ida Bagus Gede Manuaba. "AUDIT ENERGI LISTRIK PADA GEDUNG PLASA TELKOM TEUKU UMAR DENPASAR". Jurnal SPEKTRUM 8, nr 4 (8.01.2022): 154. http://dx.doi.org/10.24843/spektrum.2021.v08.i04.p18.
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The increasing need for electrical energy every year results in the availability of energysources is dwindling. Therefore, the need for energy conservation to streamline the use ofelectrical energy without reducing its comfort or productivity. The main factor of energyconservation is energy auditing. Plasa Telkom Teuku Umar is a company engaged intelecommunications. The convenience of employees and customers takes precedence overthis0company.0The best service0must also be followed by the efficient use of facilities. For thisreason, an electrical energy audit is needed. In this study, it was attached0to theair0conditioning0system and lighting system. It is attached to the air conditioning system andlighting system. Tools0that can be0used for measurement in the field are Lux Meter, (lightintensity measurement), Tang Ampere (electric current measurement), and Thermometer (roomtemperature measurement). The study was conducted by0calculating and comparing0electricalenergy consumption in lighting and air conditioning systems between before and after anenergy audit. Calculate the pre- and post-audit IKE (Energy Consumption Intensity) andcompare it to the IKE standard. The results of the study found energy savings of 36.06%. Fromelectricity usage of 16.86 kWh/m2/bln pre audit to 10.78 kWh/m2/mo post audit.
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Parashchenko, T., M. Zaets i R. Vasylenko. "CURRENT STATE AND PROSPECTS OF IMPROVING THE LIGHTING EQUIPMENT OF AIRCRAFTS". Наукові праці Державного науково-дослідного інституту випробувань і сертифікації озброєння та військової техніки 15, nr 1 (12.04.2023): 116–21. http://dx.doi.org/10.37701/dndivsovt.15.2023.16.
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The development of aviation technology is directly related to technological progress. Taking this into account, the question of switching to modern light sources on aircraft arises. Lighting equipment plays an important role in ensuring the operation of aircraft and flight safety, especially at night. Among the elements of aircraft’s electrical equipment, lighting equipment represents a fairly large electrical load (5.20 % of the total power of consumers).Today, incandescent lamps are most often used in aircraft lighting systems, in which an incandescent thread (a refractory conductor, a spiral made of tungsten alloy), located in a glass vessel with a vacuum or filled with an inert gas, is heated to a high temperature (luminosity temperature) due to the flow of electric current through this thread.
Recently, reliable and energy-efficient Light Emitting Diode (LED) light sources have been widely implemented in lighting systems for various purposes. Light diodes have now become light sources that are produced on an industrial scale for a variety of needs. LEDs are one of the key devices in today’s technological society. Unlike many other light sources, LEDs can convert electrical energy into light with an efficiency close to unity. It is expected that the role of LEDs will only grow and in the future they will become the main source of light.
Consequently, the light sources currently used on aircraft of the Armed Forces of Ukraine are outdated and do not correspond to the level of accumulated scientific and technical potential. Therefore, research aimed at introducing LED light technologies to the lighting equipment of aircraft is relevant.
The article considers the typical structure and main characteristics of aircraft’s lighting equipment of the Armed Forces of Ukraine. The stages of development of aircraft lighting equipment, the main types of existing lighting sources and their features are considered. It is noted that the development of lighting technology and the successful introduction of LEDs into lighting technology for various purposes allow us to consider the possibility of using them as the main light source on aircraft in order to improve operational characteristics. The relevance of conducting research aimed at improving the lighting equipment of aircraft is substantiated.
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Langston, Lee S. "Wild Blue Yonder". Mechanical Engineering 128, nr 05 (1.05.2006): 36–39. http://dx.doi.org/10.1115/1.2006-may-3.
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This paper focuses on research and innovation in the gas turbine industry. The production of nonaviation gas turbines was $3.6 billion in 1990, only 15% of total production. With improvement in thermal efficiency, increases in unit size, and the building of record breaking combined-cycle electric power plants fueled by cheap natural gas, nonaviation production zoomed to a euphoric high of $25.8 billion in 2001. The US Department of Energy announced last year the award of $130 million for 10 new projects to integrate hydrogen-burning gas turbines and turbine subsystems into integrated gasification combined cycle (IGCC) central power stations. Nuclear generation is also a zero-emissions technology, and Pebble Bed Modular Reactor Ltd, a South African company, is developing a gas turbine-nuclear reactor electric power plant, with participating companies that include Westinghouse, MHI of Japan, Nukem of Germany, and South Africa's Eskom.
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Marhatang, Marhatang, Herman Nawir, Muhammad Ruswandi Djalal, Maudini Maudini i Muh Amar Syarifuddin. "Design of Wind Power Generator for Tambak Houses". Journal of Electrical Technology UMY 7, nr 1 (1.07.2023): 20–28. http://dx.doi.org/10.18196/jet.v7i1.17457.
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Wind Power Generation (WPG) requires specific wind conditions to generate electrical energy. Indonesia's wind potential enables the development of small-scale power plants. Innovations in windmill technology need to be developed to ensure maximum results in low wind speed conditions. This research proposes the design and implementation of WPG using a vertical axis to provide lighting for pond houses. The goal is to benefit pond workers in coastal areas that lack electricity from the National Electric Company. The manufacturing stages include design and testing. Based on the design results, the dimensions of the propeller area are 0.393m, the frame height is 1.5m, and the wind turbine height is 0.75m. The performance test of the WPG yielded the highest turbine power value at 15.30 WITA, with a turbine power output of 25.38 Watts.
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Pang, Shaoning, Lei Song, Abdolhossein Sarrafzadeh, Guy Coulson, Ian Longley i Gustavo Olivares. "Indoor Emission Sources Detection by Pollutants Interaction Analysis". Applied Sciences 11, nr 16 (17.08.2021): 7542. http://dx.doi.org/10.3390/app11167542.
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This study employs the correlation coefficients technique to support emission sources detection for indoor environments. Unlike existing methods analyzing merely primary pollution, we consider alternatively the secondary pollution (i.e., chemical reactions between pollutants in addition to pollutant level), and calculate intra pollutants correlation coefficients for characterizing and distinguishing emission events. Extensive experiments show that seven major indoor emission sources are identified by the proposed method, including (1) frying canola oil on electric hob, (2) frying olive oil on an electric hob, (3) frying olive oil on a gas hob, (4) spray of household pesticide, (5) lighting a cigarette and allowing it to smoulder, (6) no activities, and (7) venting session. Furthermore, our method improves the detection accuracy by a support vector machine compared to without data filtering and applying typical feature extraction methods such as PCA and LDA.
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Akudo, Onwuka Immaculater, Dauda Moses, Amos Danlami Agbu i Umar Salisu. "Assessment of Tools and Equipment Utilization for Effective Electric Power Distribution in Yola Electricity Distribution Company, Adamawa State, Nigeria". Studies in Social Science Research 2, nr 3 (10.07.2021): p1. http://dx.doi.org/10.22158/sssr.v2n3p1.
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The main purpose of this study was to assess the utilization of tools and equipment for effective electric power distribution by Yola Electricity Distribution Company in Adamawa State. Two research questions and two null hypotheses were formulated to guide the study. The study adopted descriptive survey research design. The population of the study was 69 consisting of 46 technicians and 23 supervisors in Yola Electricity Distribution Company. Due to the manageable size of the population, there was no sampling; hence, the whole population was used for the study. A structured questionnaire developed by the researchers titled “Utilization of Tools and Equipment for Effective Distribution of Electricity Questionnaire (UTEEDEQ)” was used as the instrument for data collection. The instrument was validated by three experts and a reliability of 0.89 was obtained using Cronbach Alpha reliability method. Mean and standard deviation was used to answer the research questions while t-test was used to test the null hypotheses at 0.05 level of significance. The finding of the study revealed that Yola Electricity Distribution Company utilizes the following tools for effective distribution of electric power distribution: Ladder, Hand Gloves, Safety Belt, Ammeter, Ohmmeter, Voltmeter, Spanners, Screwdrivers, among others; Yola Electricity Distribution Company utilizes the following equipment for effective distribution of electric power distribution: Supply Voltage Detector, Distribution Transformer, Power Transformer, Battery Rectifier, Supply Voltage, Circuit Breaker, Spring Charger, Trip Circuit, Low Pressure Gas Indicator among other. Based on the findings, the following recommendations were made: YEDC should provide more equipment for effective distribution of electric power especially utility vehicles and other equipment necessary for effective electric power distributions.
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Hirsh, Richard F. "Wolf Creek Station: Kansas Gas and Electric Company in the Nuclear Era by Craig Miner". Technology and Culture 37, nr 2 (kwiecień 1996): 394–95. http://dx.doi.org/10.1353/tech.1996.0104.
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Nurjanah, Ayu, i Dhela Iskarina. "Overview of Physical and Chemical Factors in Fertilizer Companies". Indonesian Journal Of Occupational Safety and Health 10, nr 1 (17.03.2021): 16. http://dx.doi.org/10.20473/ijosh.v10i1.2021.16-24.
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Introduction: Fertilizer companies are companies that use large amounts of chemicals, natural gas as raw equipment and assist in the production process, as well as the use of factory equipment with high temperatures and pressures, making companies with high levels of risk. The purpose of this study is to determine the general picture of physical and chemical factors in the work environment and the risks that can occur to workers and companies in fertilizer companies in Indonesia. Methods: This research was conducted using descriptive methods, the object observed in this study is the physical and chemical factors that exist in fertilizer companies. Results : Lighting intensity in all areas of the operational departments of fertilizer companies in Indonesia is only 12%, which is in accordance with the Threshold Limitation Value (TLV). Intensity of noise in the area of the company, as much as 17% is above the Threshold Limitation Value (TLV). The level of dust in this fertilizer company is 33% of the area that exceeds the Threshold Limitation Value (TLV). These three things can increase the risk to health, even increase the intelligence of the workers themselves. In addition to the risks to the workers, these three things can also benefit a company's productivity. Conclusion: All areas of fertilizer companies have risks originating from physical and chemical factors. So it needs to be carried out appropriate control in order to reduce the risks that can occur both for workers and companies.Keywords : dust, ferilizer plant, lighting, noise
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Nikolaev, N. I., i A. S. Arangulov. "Thermophysical characteristics of gas-power dual-fuel engines w12v50 df for liquefied gas shipping vessels". Journal of Physics: Conference Series 2061, nr 1 (1.10.2021): 012058. http://dx.doi.org/10.1088/1742-6596/2061/1/012058.
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Abstract Maritime transport plays important role in the economic development of society – 90% of goods are transported by ships. At the same time, maritime transport requires a significant amount of fuel resources. Production of liquefied natural gas (LNG) is becoming the fastest growing industry in the modern global energy sector. Today, LNG accounts for 40% of the physical volume of world gas trade, and its share will increase up to 60% by 2040. Currently, natural gas is used on ships in the form of liquefied petroleum gas, compressed natural gas, and liquefied natural gas (LNG). The article deals with the urgent problem of operation of dual-fuel diesel-electric installations of ships. The need to study the heat-engineering parameters of two-fuel diesel generators of the Wartsila company has been substantiated. The authors present the dependencies of main heat-engineering parameters on the load of Wartsila W12V50DF dual-fuel engines used as a generator drive in the main electric propulsion engines on LNG tankers. A comparative assessment of the dependencies of exhaust gas temperature, turbocharger rotation speed, boost pressure and gas pressure on the load of diesel generators on two LNG tankers has been carried out. The article analyzes the presented dependencies. The authors substantiate the need for further improvement of their design and workflow.
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Longston, Lee. "Electrically Charged". Mechanical Engineering 124, nr 06 (1.06.2002): 50–52. http://dx.doi.org/10.1115/1.2002-jun-3.
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This article focuses on gas turbines that were produced in 2001 spanning a wide range of capacities. As the engineer's most versatile energy converters, gas turbines producing thrust power continued in 2001 to propel most of the world's aircraft, both military and commercial. The largest commercial jet engines today can produce as much as 120,000 pounds thrust, or some 534,000 Newton. More natural gas pipeline capacity will be added to feed the surge in gas-driven electric power plants that have been corning online in the United States and other parts of the world. The gas turbine may come to be used in a new, commercially promising closed-cycle configuration. A South African company has been working on plans to build and test a prototype of a closed-cycle electric power gas turbine, which uses helium gas as the working fluid and a helium-cooled nuclear reactor to provide heat to power the cycle. If the gas turbine-nuclear reactor power plant is successful, the gas turbine may be the key to yet another energy conversion device, as it has been with record-setting numbers of combined-cycle plants installed worldwide.
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Oshilalu, Adeyemi Z., i Yolandie C. Baldie. "Critical strategic analysis forecast of the oil and gas business unit of General Electric Company: A conceptual review". Research Journal of Business and Economic Management 4, nr 1 (28.02.2021): 1–12. http://dx.doi.org/10.31248/rjbem2020.053.
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The General Electric Company (GE) is considerably assessed as one of the world’s most successful corporations in the 20th Century. GE is a huge multinational conglomerate with one of the most highly innovative business units/divisions in the world. Due to the vast majority of GE’s products and services, a critical strategic analysis forecast of one of the conglomerate’s eight business units – Oil and Gas is presented for a conceptual review. The paper details how these Strategic Business Units (SBUs) explored the efficiency and market focus of their business portfolio through diversification, innovation, and acquisition. Resource allocation and value chain analysis of the SBU was conducted to determine the certainty of the company’s competitive edge. The portfolio of the SBU; oilfield services, oilfield equipment, turbomachinery, and process & digital solutions were reviewed using the Boston consulting group (BCG) matrix while the Ansoff matrix was employed to analyze and predict the company for sustainable future growth and divestment. In 2017, the synergy between these SBU and Baker Hughes to deliver a full-stream integrated oilfield portfolio revealed a strong and enhanced competitive advantage of the SBU across the global oil and gas industry, however, the analysis of the company shows that the SBU still experiences underperformance in the stock market.
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He, Tinghai. "Analysis of China’s Electrical Vehicles Market Competition: Taking Tesla and NIO and Xpeng as Examples". BCP Business & Management 37 (1.02.2023): 107–12. http://dx.doi.org/10.54691/bcpbm.v37i.3554.
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Consumers are increasingly turning to electric vehicles to reduce greenhouse gas emissions and to avoid the rising cost of gas vehicles. The global electric vehicle market is expanding sharply, especially the new electric vehicle market in China. This article presents Tesla, NIO, and Xpeng's market value of equity, the market value of debt, and other data based on their financial reports. This article also compares and analyzes the financial performance of these three companies and makes effective investment recommendations for investors. Investors are advised to invest in Tesla with confidence because the company is anticipated to have steady growth and prosperity in the Chinese electric vehicles market. When Xpeng and NIO are compared, it is clear that NIO has a more steady development trajectory. Investors used to make wise investments will be drawn to it because of its low equity beta. Additionally, it demonstrates that it outperforms Xpeng in terms of corporate management, sales model, and design. On the other hand, Xpeng has not demonstrated enough advantages to draw in investors.
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Fei, Hanfeng. "Analysis of the Investment Value of three American companies in Industrial Sector". Highlights in Business, Economics and Management 4 (12.12.2022): 194–98. http://dx.doi.org/10.54097/hbem.v4i.3448.
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Industrial stocks are stocks issued by industrial enterprises that produce non-consumer materials. Industries producing non-consumer data generally include extractive industry, manufacturing industry, electric power industry, gas industry and so on. The stocks issued by these industrial enterprises that produce non-consumer materials are called industrial stocks. Industrial stocks have a long history in United States. As early as 1900, industrial stocks became the majority of American stocks. In the same year that the United States overtook Britain as the country with the biggest economy in the world. Even today, more than a hundred years later, industrial stocks still play an important role in the U.S. economy and offer great investment value. In this article, three industrial stocks are selected and analyzed in different investing aspects, which can provide reference for the investors who are interested in industrial stocks. Three companies are the Boeing Company (BA), General Electric Company (GE), Ford Motor Company (F). The results show that BA is most risky and F is most profitable.