Artykuły w czasopismach: „SOLAR BOASTS”

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Zhao, Xiang Yang, i Yu Jin. "Development of a Test Platform for Stand-Alone PV Systems". Advanced Materials Research 433-440 (styczeń 2012): 6409–13. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.6409.

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To verify the design of a standalone photovoltaic (PV) system, a test facility has been installed. This paper describes a platform to test the stand-alone solar system according to the IEC62124 standard. Essentially, this entire system involves the integration of a Personal Computer (PC), Data Acquisition (DAQ), an AC load and a solar array simulator (SAS) to test and simulate a stand-alone PV system. The main functions of this test facility are data acquisition, display, save and analysis data and print reports. The information obtained by monitoring parameters, such as average battery’s temperature, voltage and current is fed to the PC via the DAQ for analysis. This customized control interface has been developed by utilizing Labview software. This new system boasts of high accuracy measurements coupled with the commercial viability of low cost.

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Numata, Masako, Masahiro Sugiyama, Wunna Swe i Daniel del Barrio Alvarez. "Willingness to Pay for Renewable Energy in Myanmar: Energy Source Preference". Energies 14, nr 5 (9.03.2021): 1505. http://dx.doi.org/10.3390/en14051505.

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The increased use of renewable energy is imperative as a countermeasure to climate change. As with conventional electricity generation technologies, public acceptance of renewables is an important issue, and willingness to pay (WTP) is a widely used indicator to assess such public attitudes. Unfortunately, the literature to date mostly covers developed countries, with few WTP surveys in developing countries. Tackling climate change is an urgent issue for these developing countries; therefore, understanding of public attitudes toward renewables in developing countries is crucial. This study conducted the first survey on WTP for introducing renewable energy in Myanmar. Although Myanmar boasts abundant renewable energy resources, including solar power and biomass in addition to large-scale hydro plants, its resources are not being properly utilized to generate electricity. This study surveyed WTP for power generation by solar photovoltaics, small hydropower, and biomass facilities. The results showed the highest WTP for solar power (USD 1.92) with 10% share in the energy mix, and lower WTP for biomass and small hydropower electricity generations (USD 1.13 and USD 1.17, respectively). Careful public communication is thus crucial for expanding biomass and small-scale hydro power plants.

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Liu, Wei. "Recent Progress of Hole Transport Layers of Inverted Perovskite Solar Cells". Highlights in Science, Engineering and Technology 27 (27.12.2022): 349–54. http://dx.doi.org/10.54097/hset.v27i.3777.

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Perovskite solar cells, also known as PSCs, have become a potentially viable choice for a source of clean energy. This is especially true for the inverted structure, which boasts high stability and allows for synthesis by solution at low temperatures. In the inverse structure, one of the most important parts is called the hole transport layer, which plays a key role in acting as a substrate and transporting holes. Several studies on high-temperature liquids have been carried out as part of an effort to effectively enhance the device performance of inverted perovskite solar cells (IPSCs). In addition to common organic components, including PEDOT: PSS and PTAA, this paper also provides information regarding inorganic HTL materials, such as NiOx and compounds based on copper. This study discusses in depth the benefits and drawbacks of these four materials, as well as potential avenues for future research and development, such as the application of dopants and various interface optimization methodologies. It may be possible to improve the PCE of IPSCs as well as the stability if HTL materials are modified. This paper provides new researchers with a solid foundation and direction for optimizing HTL materials.

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ZIELIŃSKI, ARTUR. "TEMPERATURE DIVERSIFICATION OF THE SURFACE LAYER OF WATER IN THE KARST LAKES IN THE STASZÓW REGION (NIDZIAŃSKA BASIN)". Badania Fizjograficzne Seria A - Geografia Fizyczna, nr 12 (72) (15.12.2021): 181–89. http://dx.doi.org/10.14746/bfg.2021.12.10.

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The north-eastern part of Nidziańska Basin, near Staszów, boasts a large grouping of small but relatively deep lakes of karst origin. In 2010, 26 of them underwent regular measurements of the temperature of their surface layer of water. The results show that although the basins are situated close to each other and the area has similar characteristics, the temperature differs significantly. The thermal differences reach 11.6ºC. The warmest lakes appear to be Lake Łajba, Duży Staw, Lakes Torfowe I and Torfowe II. However, the coldest surface water is in lakes Piąty Staw, a small unnamed lake located near Lake Ciemne and an unnamed lake sandwiched between Lake Szyja and Lake Jasne.The fact that the temperature of the water goes up results directly from solar radiation, which was the strongest in the case of Lake Łajba, located in an open area. However, the coldest basins were located in the central parts of the lakes of the floating peat islands. Those biogenic islands are perfect “insulators”, protecting the water from thermal radiation. Moreover, the lakes which are fed with soligenous water supplies, tend to have a lower temperature.

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Mungondori, Henry H., Spencer Ramujana, David M. Katwire i Raymond T. Taziwa. "Synthesis of a novel visible light responsive γ-Fe2O3/SiO2/C-TiO2 magnetic nanocomposite for water treatment". Water Science and Technology 78, nr 12 (29.12.2018): 2500–2510. http://dx.doi.org/10.2166/wst.2019.004.

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AbstractThis work investigates the preparation of a magnetically recoverable photocatalytic nanocomposite of maghemite nanoparticles coated with silica and carbon doped titanium dioxide. The novel nanocomposite boasts the advantages of efficient photocatalytic degradation of organic pollutants in water and ease of recovery of the fine particles after water treatment. The photocatalytic nanocomposite was successfully synthesized through a stepwise approach via co-precipitation and sol-gel methods. Characterisation by Fourier transform infrared (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS) substantiated the existence of the intended structure of the nanocomposite and the particles were found to be in the size range of 15–22 nm with a quasi-spherical shape. Brunauer–Emmett–Teller (BET) surface area analysis revealed an average surface area of 55.20 m2/g, which is higher than that of commercial TiO2 (Degussa P25, 50.00 m2/g), and an average pore diameter of 8.36 nm. A 5 ppm methylene blue solution was degraded with an efficiency of 96.8% after 3 h of solar irradiation, which was 19.7% greater than using the same photo-catalyst under strict UV light irradiation. Photo-catalysis using these nanoparticles was observed to be very effective. The prepared novel visible light active nanocomposite has great potential for incorporation into water treatment systems because it exhibits good stability and magnetism, as well as high photocatalytic efficiency.

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Pappa, Pavithra Chidambaram, Dahlia Devapriya i S. Ewins Pon Pushpa. "An Improved Search Algorithm for WSN with Charging Nodes". Journal of Network Security Computer Networks 9, nr 2 (28.07.2023): 15–22. http://dx.doi.org/10.46610/jonscn.2023.v09i02.003.

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The existing semi-centralized stochastic election approach, Stochastic Election of Appropriate Range Cluster Heads (SEARCH) is analyzed and features are improved which, boasts low time cost, improved stable period, and eliminates the unfavorable scenario, that no cluster head emerges during some speciﬁc rounds. However, the implementation of SEARCH in WSNs with solar charging nodes offers very marginal improvement in a stable period. This proves the inefficiency of the algorithm in handling these charging nodes. The improvement offered aims to make the algorithm, more energy aware and hence comparatively well organized in handling the charging nodes in the network. This improvement, equipped with dynamic tracking of instantaneous node energy shows a promising way to extend clustering algorithms to networks with chargeable nodes. In addition, the existing SEARCH algorithm’s cluster head election procedure lacks a futuristic view of the minimum energy requirement for successful operation throughout an entire round. Intermediate cluster head death can be detrimental, to network performance by paralyzing the corresponding clusters, resulting in total data transmission failure of all nodes in that cluster. Implementing the improved SEARCH algorithm drastically reduces the bit loss by 95%, with increasing the transmitted bits successfully by 4%. The overall lifetime of the WSN improves by around 30% and the number of cluster heads dying prematurely in the middle of round operation is reduced by 89%. This paper analyzes and refines a current clustering algorithm, thereby promisingly enhancing its capacity to boost the overall network performance.

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Dwicaksana, Made Puji, I. Nyoman Satya Kumara, I. Nyoman Setiawan i I. Made Aditya Nugraha. "REVIEW DAN ANALISIS PERKEMBANGAN PLTS PADA SARANA TRANSPORTASI LAUT". Jurnal RESISTOR (Rekayasa Sistem Komputer) 4, nr 2 (28.10.2021): 105–18. http://dx.doi.org/10.31598/jurnalresistor.v4i2.732.

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This paper aims to review the current development of vessels with solar power to reference the research and development of solar power vessels in Indonesia. The research method is a systematic literature review on the development of solar-powered vessels and includes an online survey of vessels using solar PV. This study found 86 solar-powered vessels consisting of boats, utility boats, ferries, houseboats, research, vehicle carriers, dive boats, and yachts developed from 1988 to 2020. These solar-powered vessels were built for various functions such as competitions, cleaning the environment, passenger transportation, and water tourism. Production of solar-powered vessels is increasing in terms of production volume, PV capacity, and battery capacity. In terms of PV configuration, the solar array is dominated by a fixed array structure. However, there have been innovations using sun-tracking, wind tracking airfoils, and expandable channels to increase PV capacity.

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Duda, Dariusz, i Wojciech Litwin. "The catamarans George and Energa Solar". Polish Maritime Research 14, nr 3 (1.07.2007): 3–6. http://dx.doi.org/10.2478/v10012-007-0011-3.

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The catamarans George and Energa Solar Since a few years students of the Faculty of Ocean Engineering and Ship Technology, Gdansk University of Technology, have designed and built untypical floating units. Until last year their efforts were focused mainly on leg-driven boats. The boats of interesting design have taken part in yearly competitions: the International Waterbike Regatta. Their advanced design made it possible to compete with the best boats from Croatia, Holland, Germany, Turkey and Italy. Recently the students have designed and built a solar-energy-driven boat. It is the catamaran Energa Solar which took part in a prestigious regatta: the Frisian Nuon Solar Challenge carried out in Holland in summer 2006.

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Minak, Giangiacomo. "Solar Energy-Powered Boats: State of the Art and Perspectives". Journal of Marine Science and Engineering 11, nr 8 (30.07.2023): 1519. http://dx.doi.org/10.3390/jmse11081519.

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This paper presents an examination of the primary applications of solar energy as the main power source in the maritime sector, focusing on recent developments. A comprehensive review of the existing literature, including journal articles, proceedings, and patents, is conducted to identify three prominent areas for advancing solar energy-powered boats: maritime drones, sporting boats, and short-range touristic vessels. Maritime drones primarily serve as small autonomous boats for research, conservation, or military operations. On the other hand, sporting boats include nautical and energy design competitions involving students and enthusiasts. In terms of commercial interest, there is a growing demand for environmentally friendly and low-noise boats suitable for tourist activities, particularly in protected areas. Furthermore, specific and illustrative cases are explored in a dedicated section. Lastly, potential future perspectives are discussed and elucidated.

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Moya, Marcelo, Javier Martínez-Gómez, Esteban Urresta i Martín Cordovez-Dammer. "Feature Selection in Energy Consumption of Solar Catamaran INER 1 on Galapagos Island". Energies 15, nr 8 (9.04.2022): 2761. http://dx.doi.org/10.3390/en15082761.

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Maritime passenger transport in the Galapagos Islands–Itabaca Channel is based on boats with combustion engines that consume an annual average of 4200 gallons of fuel and produce about 38 tons of CO2 per year. The operation of the solar catamaran “INER 1” electric propulsion (PV) is a renewable and sustainable model for passenger shipping in the Galapagos Islands. In this regard, the detailed study of the relationship between the variability of solar radiation, the abrupt change of tides due to changes in wind speed and direction, and the increase in tourists, according to dry and wet seasons, cause high energy consumption. The boats must absorb energy from the electrical grid of the islands; this energy is from renewable (solar and wind) and, mostly, of fossil origin so identifying the source of the energy absorbed by the boats is essential. The aim of this study was to select the most influential attributes in the operation of the solar catamaran “INER 1” in the Galapagos Islands. The methodology for knowledge discovery in the databases was determined by selecting attributes that combine environmental, social, and energy variables affecting the energy performance of the solar catamaran. The energy consumption of the boats features a direct relationship with the attributes defined in this research as: (1) Energ (energy used), (2) Tur (tourists and residents), (3) Fotov (PV park), (4) Glrad (global radiation), (5) date (date and time), (6) Term9 (thermo-electric 9). Considering the six best attributes filtered by the proposed algorithms, 4.95% in the mean squared error parameter and a 98.94% accuracy in the classification and prediction of the energy consumed by boats were obtained.

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Pulungan, Ali Basrah, Juli Sardi, Hastuti Hastuti, Syaiful Islami i Hamdani Hamdani. "Pemasangan Solar Cell Untuk Kapal Nelayan". INTECOMS: Journal of Information Technology and Computer Science 2, nr 2 (27.09.2019): 53–58. http://dx.doi.org/10.31539/intecoms.v2i2.811.

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Utilization of new renewable energy generation technology can encourage the increase of people's prosperity, especially fishermen. This can be done by utilizing solar energy using solar cell as a source of lighting on the fishing vessel's, thus saving the use of fuel oil. Based on the community service activities aimed at reducing the operational costs of fishermen in the form of Solar cell Installation for fishing boats in the Village Air Tawar Barat District Padang Utara. The implementation method that is given is the installation of solar cell in the ship and training maintenance of solar cell and the introduction of components and hand tools. This activity is held for three days which includes preparation, installation and training and followed by two groups of fishermen, each consisting of 3 members. Each group of fishermen received a complete set of solar cells and installed. This activity has been done well and the solar cell is working properly. Participants hope that such activities can be carried out for the next year, as there are still some fishing boats that are in desperate need. Keywords: Solar Cell, Fishing Ships, Groups of Fishermen

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Cioch, Andrzej. "The initial concept of the control mechanism of the hyfrofoil based on the boat Solar Boat AGH". Prace Wydzialu Nawigacyjnego Akademii Morskiej w Gdyni 31 (2016): 17–24. http://dx.doi.org/10.12716/1002.31.02.

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Lv, Zheng Xiang. "The Design of Photovoltaic System on a New Catamaran with Solar Power". Advanced Materials Research 912-914 (kwiecień 2014): 931–34. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.931.

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The design is in view of the features stenosis and short-range of inland waterways, applying photovoltaic technology of solar to the small-and-medium-sized boats, combining solar-power generation with the technology of electric propulsion of marine. It advances ship design and optimization, component design and matching, and reasonably layout solar panels on the boat and the pier, without affecting the tourism, designing a solar-powered catamaran to achieve zero emissions and the desired effect of energy saving.

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Nugraha, I. Made Aditya, Febi Luthfiani, Grangsang Sotyaramadhani, Muhamad Amril Idrus, Kaminton Tambunan i Marcus Samusamu. "Pendampingan Teknis Pemasangan dan Perawatan Pembangkit Listrik Tenaga Surya di Desa Tablolong Nusa Tenggara Timur". Rengganis Jurnal Pengabdian Masyarakat 1, nr 2 (29.11.2021): 97–107. http://dx.doi.org/10.29303/rengganis.v1i2.89.

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The huge potential of solar energy and the increasing demand for electrical energy when fishing at night allow fishing boats in Tablolong Village to use solar power plants as a source of electrical energy. The purpose of this utilization can indirectly overcome the need for electrical energy on fishing boats and reduce the use of fossil energy to turn on generators. Service activities in the form of solar power plants installation and maintenance training are in line with the policies of the Ministry of Marine Affairs and Fisheries Republic of Indonesia and the Ministry of Energy and Mineral Resources Republic of Indonesia to preserve the environment, especially the sea. This activity was attended by 24 shipowners and the installation of 80 Wp solar power plants was carried out on two ships three GT. Based on the results of the activity assessment indicators from the questionnaire that was tested using the Wilcoxon test, it was found that the service activities showed an increase in understanding and skills by the community in the use of solar power plants. This increase is seen from knowledge of the ship's electrical system, knowledge of the ship's electrical operating system, and the ability to repair and maintain the ship's electrical system.

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Nugraha, I. Made Aditya, Febi Luthfiani, Grangsang Sotyaramadhani, Aris Widagdo i I. Gusti Made Ngurah Desnanjaya. "Technical-economical assessment of solar PV systems on small-scale fishing vessels". International Journal of Power Electronics and Drive Systems (IJPEDS) 13, nr 2 (1.06.2022): 1150. http://dx.doi.org/10.11591/ijpeds.v13.i2.pp1150-1157.

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The source of lighting in ships can be sourced from electrical energy generated by using generators or now can utilize new renewable energy, such as solar energy using PV. Based on the existing potential, Indonesia has good solar energy potential. The measurement results show that the potential for solar energy reaches 6.37 kWh/m2/day. This potential can certainly be utilized in the marine and fisheries world. The utilization of PV as a source of electrical energy on fishing boats is expected to help support government policies in terms of the blue economy and overcome the limited number of fossil energy sources. In this study, the installation of PV with a size of 100 WP was installed on fishing boats. The need for electrical energy for PV energy output shows that it can meet 50.52% of electrical energy needs. This result is supported by the Wilcoxon test that electrical energy needs can be met by PV with a p < 0.005. The results of the economic analysis also show that the use of solar energy as a source of electrical energy provides an IRR of 9%, with a payback period of 8.87 years.

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Purnomo, Teguh. "KAJIAN TEORI ANALISA PENGGUNAAN SURYA PANEL SEBAGAI KEBUTUHAN LISTRIK PADA KAPAL NELAYAN DI PANTAI UTARA TEGAL JAWA TENGAH KAJIAN TEORI ANALISA PENGGUNAAN SURYA PANEL SEBAGAI KEBUTUHAN LISTRIK PADA KAPAL NELAYAN DI PANTAI UTARA TEGAL JAWA TENGAH". Dinamika : Jurnal Ilmiah Teknik Mesin 13, nr 1 (10.12.2021): 14. http://dx.doi.org/10.33772/djitm.v13i1.18523.

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fishing activities carried out by fishermen. Fishermen need certain types of vessels to support the activities. In the operation of the ship, fishermen need fossil fuels and the use of electricity on board the ship. But not infrequently fishermen often have an imbalance problem between the operational costs of the ship and the profit. From the observations, the cost of recharging accu battery and the purchase of diesel fuel became the main obstacles. the author observes the need for the use of electricity and fuel is the main thing on board, one of which is for the use of lighting, drying and driving the ship. In addition, the depletion of fossil energy resources is also a major concern. To solve the problem, an alternative replacement is needed. The development of renewable energy resources through solar energy can be planned as to address the problem in question. With solar panel technology installed on board fishing boats, the need for electricity use and replacement of diesel fuel can be helped. This technology converts solar energy into electrical energy through solar cells which are then stored in the accu battery for the needs of electricity sources on fishing boats.

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Wang, Ruozhu, Ruting Ma, Guang Hong, Wei Tian i Yongmei Qian. "An Extensive Design Approach Integrating Offshore Residential Buildings and Solar Collectors". International Journal of Heat and Technology 39, nr 5 (31.10.2021): 1549–56. http://dx.doi.org/10.18280/ijht.390517.

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Utilization of energy has boosted socio-economic development but meanwhile exacerbated the environmental problems. Offshore areas in China boast abundant solar energy resources. The present work explores the application of solar energy in offshore residential buildings and the ways for integration of solar collectors with the buildings to analyze the potential impact of installation of solar collectors on the design of offshore residential buildings. An extensive design approach that introduces protruding features, outdoor air-conditioner unit spaces, and “virtual” elements into design of residential buildings was proposed, which would integrate the solar collectors into the architectural design and extend the functions of the residential buildings. This research aims to provide a theoretical basis for promoting utilization of solar energy and integrated design of offshore buildings.

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ZHAO, Fangyue, Xinhua YI, Jia CAI, Weishi MA, Boyan LIU, Xinru LI i Yansong MENG. "Portable solar billboard". Research and Application of Materials Science 4, nr 1 (30.06.2022): 20. http://dx.doi.org/10.33142/rams.v4i1.8459.

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Public bulletin boards are widely used in various public places, but due to the large size of the billboards, it is not easy to carry, and the traditional billboards are integrated, when the billboards need to be transferred, the limited storage space of the vehicle needs to be occupied It is extremely inconvenient, and at night, the traditional bulletin boards need to install additional light sources to illuminate them, which greatly increases energy consumption. Based on this paper designed a new structure of the bulletin board, this structure can make the bulletin board when not in use completely folded up and easy to carry, and in use can be completely unfolded and in the bottom of the added retractable support leg structure can be placed anywhere, and according to the terrain or human will to adjust the height. A solar panel is placed on the top of the bulletin board, which can store solar energy during the day and supply energy to the LED lights on the top at night for lighting, which saves energy and is very environmentally friendly.

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Torabi, N. Meetra, Janet K. Lumpp i James E. Lumpp. "Materials Selection and Processing Techniques for Small Spacecraft Solar Cell Arrays". International Symposium on Microelectronics 2011, nr 1 (1.01.2011): 000789–99. http://dx.doi.org/10.4071/isom-2011-wp4-paper3.

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Body mounted germanium substrate solar cell arrays form the faces of many small satellite designs to provide the primary power source on orbit. High efficiency solar cells are made affordable for University scale satellite programs as triangular devices trimmed from wafer scale solar cells. The smaller cells allow the array designs to pack tightly around antenna mounts and payload instruments, giving the board design more flexibility. We are investigating the reliability of solar cells attached to FR-4 and carbon core laminate printed circuit boards. FR-4 circuit boards have significantly higher thermal expansion coefficients and lower thermal conductivities than germanium. This thermal expansion coefficient mismatch between the FR-4 board and the components used cause major concern for the power system when considering a failure of the solar cells, such as a series of cracked cells or faulty solder joints. These failures are most likely to happen with a longer orbital lifetime and longer exposure to the harsh environment the satellite will experience while in orbit. Carbon core laminates provide an advanced alternative because the core thickness can be selected to more closely match the device substrate, or at least provide a wider thermal expansion coefficient range to match the components on the board. We are also comparing various methods of attaching the solar cells to the printed circuit boards, using solder paste alone and in parallel with a silicone adhesive, considering the application of these adhesives by comparing the solder joints under x-ray when applied by screen printing versus stencil printing, and looking closely at the cleaning processes for array assembly. Storage, vacuum exposure, thermal cycling, functional and vibration testing will be used to compare the survivability and performance of the solar arrays.

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Resti Nurmala Dewi. "TERAPAN (SOLAR TECHNOLOGY ON FISHING BOATS) AS AN INNOVATION TO REDUCE THE OPERATIONAL COSTS OF FISHING ACTIVITIES". Indonesian Scholars Scientific Summit Taiwan Proceeding 4 (17.08.2022): 122. http://dx.doi.org/10.52162/4.2022168.

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The operating costs of fishing vessels are dominated by the use of fuel. In most cases, a Jukung boat operated for ca 8 hours in a day requires 20 - 30 liters of diesel fuel or is equivalent to 60% of the total expenditure. TERAPAN, the solar technology installed on the roof of fishing boats, is one of the technological breakthroughs that can be employed as an alternative of replacing electricity sources from oil-fuelled generators. The outcome of TERAPAN is the reduction in ship operating costs and the risk of air pollution from the exposure of gas coming from the generator itself. The application of TERAPAN also supports the Sustainable Development Goals (SDGs) encompassing Affordable and Clean Energy, Life Below Water and Climate Action. This scientific paper aims to examine the installation and economic feasibility of solar panels to meet the lighting and navigation needs of fishing boats with a power between 450 and 900 watts. From the results, one fishing boat requires two 12 volt 50 Wp solar panel, a solar charger, a 12-volt 50 Ah battery (dry or wet), a DC to AC inverter, an MCB or switch, a control panel, sockets and two-colour power cable 6 meters long. By implementing TERAPAN, fishermen no longer have to disassemble batteries to charge at a cost of IDR 25,000.00 per battery or is equivalent to an operational cost savings of 26.04%. Further study is recommended to conduct research in terms of installing the solar panel on the ships.

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Cao, Jinru, Fuqiang Du, Linqiang Yang i Weihua Tang. "The design of dithieno[3,2-b:2′,3′-d]pyrrole organic photovoltaic materials for high-efficiency organic/perovskite solar cells". Journal of Materials Chemistry A 8, nr 43 (2020): 22572–92. http://dx.doi.org/10.1039/d0ta08706h.

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The design of dithieno[3,2-b:2′,3′-d]pyrrole (DTP) based FREAs and dopant-free HTMs for record high power conversion efficiency and stable solar cells is updated to give insightful view on material design and device strategies to boast photovoltaic performance.

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GUELLARD, Bernard, Xavier de MONTGROS, Philipe DE LA BARRIERE, Guy WOLFENSBERGER i Philippe D’OLIVEIRA. "An overview of electric and solar boats market in France". World Electric Vehicle Journal 6, nr 1 (29.03.2013): 75–87. http://dx.doi.org/10.3390/wevj6010075.

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Greco, Angela. "Whips and Boats". Archiv orientální 89, nr 3 (16.01.2022): 483–512. http://dx.doi.org/10.47979/aror.j.89.3.483-512.

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Whips were tools used for approaching large animals and thus they were part of the equipment of individuals engaged in the catching of local large preys, who can be understood as hunters. However, the environment plays a key-role in the understanding of this professional figure, as it determined the range of other animals they could catch and, accordingly, a basic differentiation between land hunters and fishermen/hunters, the latters specifically tied to the use of boats. Sofar, no specific Sumerian words have been recognized as defining the figure of the hunter; this paper proposes an interpretation as (land) hunter of the Sumerian title usan3/usan5-du3, a profession usually understood as bird-catcher or fowler. Despite it is clear that in South Mesopotamia the main prey was in any case fowl, the professional title hints to the use of whips, therefore to the equipment suitable for catching large preys, equids and ungulates, when possible or required. On the other side, this paper suggests that individuals equipped for catching large preys in wet environments are mostly hidden among the fishermen; texts concerning boat transport can however offer some hints on their presence among the individuals having some acquaintance with boats.

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Costa Drumond Sousa, Gilberto, Domingos Sávio Lyrio Simonetti, Ever Ernesto Cifuentes Noreña i Joost Pieter Rey. "Efficiency optimization of a solar boat IM drive employing variable DC link voltage and fuzzy control". Eletrônica de Potência 8, nr 1 (1.06.2003): 9–15. http://dx.doi.org/10.18618/rep.2003.1.009015.

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Thangam, Andreas, Amar Auckaili i Mohammed Farid. "Combination of Passive and Active Solar Heating with Thermal Energy Storage". Molecules 27, nr 14 (8.07.2022): 4386. http://dx.doi.org/10.3390/molecules27144386.

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This study investigated the impact of individual and combination of different sources of heating (passive solar heating, electric oil-heater, and solar air heater) in a pilot-scale building containing phase change material (PCM) for a potential reduction in energy consumption while maintaining thermal comfort. Unlike most of the recent simulations and modelling studies, this impact was tested experimentally using two identical control and test huts located at the University of Auckland. The control hut was equipped with standard gypsum boards while the test hut had gypsum boards containing PCM (PureTemp 20, PT20). The study found that combining both active and passive solar heating with a temperature-controlled electric oil heater demonstrated the ability to provide significant energy savings and maintain thermal comfort in the test hut, most notably overnight. The suggested combination was tested over different weather conditions and with different temperature constraints to maintain thermal comfort and achieve energy savings ranging from 33% to 87.5%.

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Zmeškal, O., P. Štefková, L. Dohnalová i R. Bařinka. "Use of PCM Boards for Solar Cell Cooling". International Journal of Thermophysics 34, nr 5 (21.04.2012): 926–38. http://dx.doi.org/10.1007/s10765-012-1196-y.

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Sharanya, Mrs D. "Solar Median Strip". International Journal for Research in Applied Science and Engineering Technology 9, nr VI (30.06.2021): 2784–88. http://dx.doi.org/10.22214/ijraset.2021.35587.

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This paper describes about using solar energy to create intelligent highways. Smart highway and smart road are terms for a number of different proposals to incorporate technologies into roads for better future. Solar median strip uses solar panels, photovoltaic effect, LEDs and microprocessor chips with circuitry boards. Solar panels are arranged on median strip of the road. Energy from these solar panels is used to operate the street lights, water pump for nearby farms and additional energy can be stored and utilized by nearby communities by using an inverter. Solar median strip will pay for itself through generation of electricity. The implementation of this technology will create the clean energy boom. By this way we can use solar energy efficiently. We can also create smart roads for better future without causing damage to environment by using renewable source.

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Habibullah, Habibullah, Rahmat Hidayat i Pinto Anugrah. "Penerapan Panel Surya untuk Penerangan Kapal Kelompok Nelayan Pantai Jaya, Padang". JTEIN: Jurnal Teknik Elektro Indonesia 1, nr 1 (20.06.2020): 6–9. http://dx.doi.org/10.24036/jtein.v1i1.9.

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Pasie Nan Tigo Urban Village has 20 Fishermen Groups, one of which is active is the Pantai Jaya Fishermen Group. Based on the facts and discussions with the Pantai Jaya Fishermen group it was found that the most important problem was the high operational costs required when going to sea, while the fish catches obtained were uncertain and the lack of technological touch in the fishing process. To go to sea, fishermen with Tondo Ships must prepare a minimum fund of 1.35 million rupiah, of which around 50% is used to buy fuel oil (BBM). The solution offered to solve the problem is the utilization of environmentally friendly solar energy through the solar panel technology of ship lighting systems. It is expected that from this activity can be obtained by fishing boats powered by environmentally friendly solar energy that is more economical and profitable. The use of solar panels for ship lighting systems will replace the use of generator engines which so far need fuel.

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Suhane, Rupanshu, M. K. Chopra i V. V.K. Sethi. "Mathematical Modeling of Battery and Ultra Capacitor for Photo Voltaic System". International Journal of Engineering & Technology 7, nr 3.27 (15.08.2018): 41. http://dx.doi.org/10.14419/ijet.v7i3.27.17651.

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In this paper the scientific displaying of battery and ultra capacitor is performed for solar photovoltaic system. The expansion of the ultra capacitor bank displays the requirement for a philosophy to upgrade the photovoltaic system to avoid abundance battery stockpiling. This work traces the strategy used to streamline the blend of photovoltaic boards, batteries, and ultra capacitors for a given solar radiation and load profile. Lessening supplies of petroleum derivative, top oil and the natural effect of non-renewable energy sources on the earth has energized a development in manageable energies, for example, wind and solar power.

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Ling, Yeong Tyng, i Nur Hasya Mohamad. "IoT-Based Alert Notification for Tilted Road Sign Boards with Solar Energy". Trends in Undergraduate Research 5, nr 2 (31.12.2022): c1–7. http://dx.doi.org/10.33736/tur.2811.2022.

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Currently, the department of Jabatan Kerja Raya (JKR) in Malaysia depends on the notification from public’s complaints or on-site spot checks when there are tilted road sign boards. This has caused delays in repairs and could put public safety in jeaopardy. In this paper, an IoT-based alert notification for tilted road sign boards using solar energy is proposed. A Rapid Application Development methodology (RAD) is used to produce a working prototype of the proposed system with NodeMCU ESP8266 microcontroller and Arduino IDE. The results of our implementation show that we are able to detect tilted sign boards and send email alert notifications to the responsible parties accordingly.

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Ferrah, Azzeddine, Fatima Yaqoob, Mariam Ismaeil, Dana Khalil, Amal Abdelrahman i Aisha Mohamed. "A Transportable Solar Power Generator". International Journal of Research in Science 3, nr 2 (24.06.2017): 6. http://dx.doi.org/10.24178/ijrs.2017.3.2.06.

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Abstract—This paper presents the design of a 2kW portable photovoltaic (PV) stand-alone facility (PV generator) that converts directly solar irradiance into electricity for immediate use or storage. The project aims to build a stand-alone solar power source for use in rural villages, mountainous and remote areas that are distant from the national grid. It can also be very useful for powering camping tents, fishing boats, small farms, and greenhouses. Equally, it could be used for disaster stricken areas and during power outages. However, the proposed generator will be more suited for camping trips that Emiratis take almost in weekly basis. The paper will focus on presenting the main features of the designed prototype. It will also investigate the performance of the proposed stand-alone PV generator. Parameters investigated include geographic location, climate condition, solar irradiance, load consumption, ambient temperature, array voltage, battery voltage, and energy output from the array. The work presented is based entirely on the work carried out by final year electrical engineering students, during their capstone design project. The project work, presented, is a manifestation of the students learning during earlier semesters. It puts into practice the application of solar energy technology, that the student learned in his course on renewable energy systems. Index Terms—Solar energy,transportable solar system,stand-alone system,PV,photovoltaic system.

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Sau, Matius. "Solar-generator hybrid plant as an electric energy solution on fisherman boats". IOP Conference Series: Materials Science and Engineering 1088, nr 1 (1.02.2021): 012093. http://dx.doi.org/10.1088/1757-899x/1088/1/012093.

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Kashani, Seyed Ali, Alireza Soleimani, Ali Khosravi i Mojtaba Mirsalim. "State-of-the-Art Research on Wireless Charging of Electric Vehicles Using Solar Energy". Energies 16, nr 1 (27.12.2022): 282. http://dx.doi.org/10.3390/en16010282.

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Within the past decade, since impediments in nonrenewable fuel sources and the contamination they cause, utilizing green energies, such as those that are sun-oriented, in tandem with electric vehicles, is a developing slant. Coordinating electric vehicle (EV) charging stations with sun-powered boards (PV) reduces the burden of EV charging on the control framework. This paper presents a state-of-the-art literature review on remote control transmission frameworks for charging the batteries of electric vehicles utilizing sun-based boards as a source of power generation. The goal of this research is to advance knowledge in the wireless power transfer (WPT) framework and explore more about solar-powered electric vehicle charging stations. To do this, a variety of solar-powered electric vehicle charging station types are thoroughly studied. Following a study of many framework elements, the types of WPT components are explored in a different section. Within the wireless power transmission framework for solar-powered electric vehicle charging, compensators and various coil structures are also investigated, along with the advantages of each coil over the others. This study also discusses the use of artificial intelligence (AI) in WPT frameworks and highlights the important aspects of developing an AI model.

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Nasirudin, Ahmad, Hasanudin Hasanudin, Danu Utama i Lia Pundhi Tahwoto. "Determination of PV Power and Battery Capacity Size for a Leisure Solar Powered Boat at Kalimas River, Surabaya, Indonesia". Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan 17, nr 3 (29.10.2020): 123–29. http://dx.doi.org/10.14710/kapal.v17i3.31965.

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As a green city, Surabaya had been developing a program of an environmentally friendly concept in almost all sectors. One of the developed sectors with this concept is the tourism area around the Kalimas river. Tour by riding a small passenger leisure boat is the most favorite recreational option. The leisure boat designs with environmentally friendly solar-powered concepts were developed, but regarding PV power and battery capacity determination, almost all designs are not optimal. This research is aimed to obtain the optimal PV power and battery capacity by calculating the number of PV panels and batteries with minimum cost. A Linear programming approach by Simplex method is applied in the optimization calculation. The results show that the number of the battery of the previous design can be reduced from 4 (four) units (20 kWh) becomes 3 (three) units (15 kWh) and the number of PV panels are still the same number with the previous one, i.e., 7 (seven) units (2,24 kW). The optimum system cost is around 264 million rupiahs, which means that the cost is reducing around 81 million rupiahs or 24%.

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Han, Jong-Ho, i Jang-Myung Lee. "Efficiency Analysis Solar Cell of the Dynamic Boat's by SPA". Transactions of The Korean Institute of Electrical Engineers 60, nr 8 (1.08.2011): 1529–36. http://dx.doi.org/10.5370/kiee.2011.60.8.1529.

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Peng, Yunhui, Yuanzhou Zheng, Tongyao Miao, Peiru Zhou, Yangshi Shao, Liang Li, Lingzhi Feng, Zheng Fang i Zhang Yang. "Small seawater desalination system based on loop heat pipe principle". E3S Web of Conferences 118 (2019): 02034. http://dx.doi.org/10.1051/e3sconf/201911802034.

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The small seawater desalination system based on loop heat pipe principle by using plate capillary pump technology, a new type of radiator spoiler evaporator and soaking plate finned condenser to realize desktop-class solar seawater desalination system. The Venturi tube principle is used to reduce the internal pressure and energy consumption, and solar photoelectric board with electric heating board function is used to solve problems for areas where there is a shortage of electricity and fresh water resources. Full automatic control system is used to realize the full automatic operation of the equipment.Desktop-class light and small seawater desalination equipment enjoys a broad market prospect. It can not only be used in islands, fishing boats, offshore operating platforms and other complex working scenarios, but also can be used as a large ship freshwater resources emergency equipment.

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Tercan, Şafak Hengirmen, Bilal Eid, Michael Heidenreich, Klaus Kogler i Ömer Akyürek. "Financial and Technical Analyses of Solar Boats as A Means of Sustainable Transportation". Sustainable Production and Consumption 25 (styczeń 2021): 404–12. http://dx.doi.org/10.1016/j.spc.2020.11.014.

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Hema, K., i Muralidharan Muralidharan. "Attractive Lunar Power Creation Using Enormity and Clean Stream Tube". Indonesian Journal of Electrical Engineering and Computer Science 9, nr 1 (1.01.2018): 85. http://dx.doi.org/10.11591/ijeecs.v9.i1.pp85-88.

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<p>The unsustainable way of petroleum products and regular mass vitality era techniques has advanced the utilization of sustainable power source strategies. Among them are sun powered boards which create power utilizing daylight. Regardless, there are different components which annoy the execution of the sun based board and there are factors which increase its competence. Considering each one of those components different components have been suited in the sun fueled board arrangement to update the efficiency of the daylight based sheets. Among them are: Solar Concentration, Solar Tracking, and Solar Panel Cooling. This paper covers the plan, advancement, and experimentation of a model which had every one of these countermeasures incorporated into it. The dazzling some segment of this model was to use another water pipe and gravity for sun based board cooling.</p>

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Phonetip, Khamtan, Graham Ian Brodie, Douangta Bouaphavong, Latsamy Boupha i Somxay Khambouddaphan. "Drying Tectona grandis boards using the simulating solar kiln conditions technique". BioResources 15, nr 4 (15.10.2020): 9075–87. http://dx.doi.org/10.15376/biores.15.4.9075-9087.

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Timber cracking, drying stress residuals, and the change of moisture content profile were investigated during the drying of Tectona grandis boards in a conventional laboratory kiln. The study applied a technique that simulated solar kiln conditions using a conventional laboratory kiln to dry timber, based on Vientiane’s climatic conditions (Laos). The theoretical recharge and discharge model was used to generate the potential drying schedule for the Vientiane area; then the drying schedule was mimicked in a conventional laboratory kiln. Timber cracking and drying stress residual were monitored and measured using Image J software, and the change of moisture content profile was determined, based on the oven dry method. Measured moisture content data were compared with the theoretical drying model. The results showed that teak boards, of 25 mm thick, had no cracking. The drying stress residual was 0.8 ± 0.3 mm with the maximum of 1.53 mm. The initial average moisture content of 62% decreased to 12% within 16 d, while the case and core moisture contents reached 12% and 14%, respectively. The drying model described the changes of moisture content profile during drying, with a maximal error of 5%.

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OLEIWI, Fadhil Mahmood, i Abothur G. ALMOHANA. "STUDY THE FEASIBILITY OF USING SOLAR ENERGY AND RATIONALIZING THE USE OF ELECTRIC ENERGY TO REDUCE THE SHORTAGE IN ENERGY SUPPLY IN IRAQ". MINAR International Journal of Applied Sciences and Technology 03, nr 02 (1.06.2021): 165–73. http://dx.doi.org/10.47832/2717-8234.2-3.21.

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The increase of energy consumption of fossil fuel as a result of the increase in the population of Iraq, the development of urban lifestyle, the increase in the number of vehicles as well as the increase of power generators has led to dangerous environmental risks, air, water and soil pollution, the spread of cancers and sensitivity diseases besides the reduction of the Iraqi exports of raw oil as a result of domestic consumption. Therefore; searching for solutions to restricting or surmounting these effects such as finding clean renewable sources of power have become inevitable. Among those renewable sources which are environmentally friendly and of middle cost is the solar power that includes solar heater and solar cells boards. Using 100.000 solar heaters saves (324.800 Megawatt hour) within one year, while using 100.000 solar cells system with an energy of (1000 watt) saves (438.000 Megawatt hour) within one year. Other means of reducing the effects of using fossil fuel is spreading the culture of power rationing and avoiding the waste and excessive consumption through cooperation with educational institutions by setting special programs such as courses, symposiums, posters and setting out a day for power consumption rationing. Turning off 10% of sets operation time in 1.000.000 house would save more than (2.076.120 megawatt hour) per annum.

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Yoon, Kyoungkuk, Hyeonmin Jeon, Junyoung Hwang i Jongsu Kim. "A Study on the Feasibility of Installing Solar Auxiliary Power for Small Fishing Boats". Journal of the Korean Society of Marine Environment and Safety 27, nr 6 (31.10.2021): 883–89. http://dx.doi.org/10.7837/kosomes.2021.27.6.883.

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Dabrowski, Bartosz, Paweł Flisek, Katarzyna Mikuła, Adam Froń, Christian Vocks, Jasmina Magdalenić, Andrzej Krankowski, PeiJin Zhang, Pietro Zucca i Gottfried Mann. "Type III Radio Bursts Observations on 20th August 2017 and 9th September 2017 with LOFAR Bałdy Telescope". Remote Sensing 13, nr 1 (5.01.2021): 148. http://dx.doi.org/10.3390/rs13010148.

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We present the observations of two type III solar radio events performed with LOFAR (LOw-Frequency ARray) station in Bałdy (PL612), Poland in single mode. The first event occurred on 20th August 2017 and the second one on 9th September 2017. Solar dynamic spectra were recorded in the 10 MHz up to 90 MHz frequency band. Together with the wide frequency bandwidth LOFAR telescope (with single station used) provides also high frequency and high sensitivity observations. Additionally to LOFAR observations, the data recorded by instruments on boards of the Interface Region Imaging Spectrograph (IRIS) and Solar Dynamics Observatory (SDO) in the UV spectral range complement observations in the radio field. Unfortunately, only the radio event from 9th September 2017 was observed by both satellites. Our study shows that the LOFAR single station observations, in combination with observations at other wavelengths can be very useful for better understanding of the environment in which the type III radio events occur.

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Pasaribu, Faisal Irsan, Abdul Aziz, Noorly Evalina, Cholish Cholish i Abdullah Abdulllah. "Pelatihan Rancang Bangun Jam Sholat Otomatis Sumber Daya Solar Cell pada Pemuda Muhammadiyah Cabang Pahlawan Perjuangan dan Pulo Brayan Darat". ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) 2, nr 2 (20.06.2021): 206–12. http://dx.doi.org/10.53695/jas.v2i2.284.

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Through the service that will be carried out, namely by conducting training activities on the design of automatic clocks with solar panel resources using additional tools in the form of Arduino Uno, in order to be a solution amid the increasing population of unemployment in the city of Medan. Various Arduino Uno boards use different ± different types of Atmega depending on the specifications, for example the Arduino Uno uses the ATmega328 while the more sophisticated Arduino Mega 2560 uses the ATmega2560. The use of solar panel energy will be designed in the form of an LCD Prayer Timer and Adhan Alarm method with a 200WP solar cell resource using the Arduino Uno programming system. Therefore, the Muhammadiyah Youth Leaders of the Heroes of the Struggle Branch and Pulo Brayan Darat are expected to be foster partners in improving these very useful design skills, so that they can serve as examples to young people around in improving the economic level of skilled and creative organizations.

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Hernandez-Toral, Jorge L., Iván González-Hernández i Rogelio Lozano. "Sun Tracking Technique Applied to a Solar Unmanned Aerial Vehicle". Drones 3, nr 2 (22.06.2019): 51. http://dx.doi.org/10.3390/drones3020051.

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In recent years, solar energy has been used as an energy source for many different applications. Currently in the area of Unmanned Aerial Vehicles (UAVs), there are research studies that incorporate this renewable energy technology to increase the vehicle’s autonomy. This technique also needs particular construction techniques and electronic boards, designed to reduce weight and increase the efficiency of all solar systems on board the UAV. As is well known, the amount of generated solar energy could be increased throughout a day a sun tracking technique is added. The present paper proves that the roll angle of a fixed wing UAV can be used to track the sun to increase the energy generated by the solar panels placed on the wing. In that case, the plane’s attitude must be compensated with the yaw angle control to be able to perform a photogrammetric mission. This will be achieved using a control strategy based on the super-twisting technique that ensures convergence in finite time even in the presence of bounded perturbations. The design of the control laws as well as the numerical simulation and real flight results are shown to validate the use of the sun tracking system.

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Al Mehedi, Mohammad Abu Abdullah, i M. Tariq Iqbal. "Optimal Design, Dynamic Modeling and Analysis of a Hybrid Power System for a Catamarans Boat in Bangladesh". European Journal of Electrical Engineering and Computer Science 5, nr 1 (2.02.2021): 48–61. http://dx.doi.org/10.24018/ejece.2021.5.1.294.

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Bangladesh is a land of rivers, canals, and lakes where water transportation is an essential means of transport. The country use boats as one of the leading resources of a carrier in its widespread inland waterways. Most of the currently used boats use only diesel for fuel. Appropriate use of renewable energy sources, particularly solar energy with diesel generators, could reduce diesel consumption. In this paper, a typical boat energy requirement was calculated to be 42.10 kWh/day. A boat could be driven by a DC motor using electrical power generated using an onboard PV system, battery, and a small generator. The carrying capacity of the vessel is 20passenger for 8hours a day. The designed system consists of a 10.6 kW PV, 1.6kW rated small gas generator, onboard battery storage consists of 16 batteries, each placed 6V, 333 Ah, and a 48 V DC motor rated 5 kW 3000 rpm with a speed controller. The paper includes system design details and sizing using HOMER Pro and dynamic simulation using MATLAB Simulink.

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Li, Ming, Pingzhi Wang i Weitang Song. "Feasibility of Employing a Heat Insulation Wall as the North Wall of a Chinese Solar Greenhouse in a Severely Cold Area of China". Applied Engineering in Agriculture 35, nr 6 (2019): 903–10. http://dx.doi.org/10.13031/aea.13160.

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Abstract. The conventional north wall of a Chinese solar greenhouse (hereafter referred to as a “solar greenhouse”) can release heat inside and help maintain a high indoor air temperature (T) during winter nights. However, the construction of conversational walls face problems of high cost, low construction quality, environmental damage, etc. Based on this, heat insulation walls have aroused much interest. However, this kind of wall can barely store and release heat, putting the solar greenhouse at risk of low T. The purpose of this study is to investigate whether the impact of the heat insulation wall could be weakened by decreasing the heat loss through the greenhouse envelope. The thermal environment of a solar greenhouse located in a severe cold area of China (Mohe County, Heilongjiang Province) was examined during sunny days, of which the north wall was constructed from polystyrene boards and plastered with 10 mm-thick mortar. During the experiment, the outdoor air temperature (T) was -22.8±5.6°C during the night, reaching a low of -34.7°C. The amount of heat released from the north wall can be neglected, as it was 5.4% of the total heat obtained by the test solar greenhouse. In comparison with conventional solar greenhouses, both heat loss through the building envelope and the heat obtained from the test solar greenhouse during the night decreased. As a result, T was maintained at 10.6±2.9°C, with a low of 6.8°C, during the night, which was within the normal range of a conventional solar house located in northern China. Thus, the impact of the heat insulation wall on T in the sunny days was weakened by decreasing the heat loss through the greenhouse envelope. Nevertheless, more work on the performance of test solar greenhouse on cloudy days and summer days should be conducted to fully validate the proposed hypothesis. Keywords: Chinese solar greenhouse, Heat insulation wall, Heat loss, Indoor temperature.

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Sunaryo i Dendi Nurachman. "Propulsion System Analysis For Solar-Powered Electric Water Recreational". E3S Web of Conferences 67 (2018): 04010. http://dx.doi.org/10.1051/e3sconf/20186704010.

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Indonesia is the world’s largest archipelago with more than 17,000 islands, and also the best marine tourism destination, there are many beautiful beaches and underwater spots throughout the country. Due to this potential condition Indonesian government is planning to improve its maritime tourism sector. To realize this boats play very important role both for transport as well as for recreational purposes. On the other hand the government is also committed to reduce the global warming from the use of fossil fuel especially in industry and transportation through the Presidential Regulation no. 61/2011, with the strategy for replacing the fossil fuel with renewable energy. To support the government’s program the research is aimed to design solar-powered electric recreation boat for tourism, with the consideration that there is almost non-stop sun shine available all year long in Indonesia. The boat has length of 12 meters. In this paper the focus is on the analysis of the propulsion system of the boat, which consists of the calculation the power needed to run the electric motor, the optimum propeller design, and the steering system.

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Meligy, Rowida, Peio Lopez-Iturri, José Javier Astrain, Imanol Picallo, Hicham Klaina, Mohamed Rady, Filippo Paredes, Fabio Montagnino, Ana Vazquez Alejos i Francisco Falcone. "Low-Cost Cloud-Enabled Wireless Monitoring System for Linear Fresnel Solar Plants". Engineering Proceedings 2, nr 1 (14.11.2020): 6. http://dx.doi.org/10.3390/ecsa-7-08173.

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This paper presents the design of a cost-effective online wireless monitoring system for two linear Fresnel reflector (LFR) solar plants located in two different countries. The first LFR plant is installed in the SEKEM medical center near Belbis city, Egypt, while the second is installed in the campus of the University of Palermo, Italy. The proposed system is a standalone system that reduces the interaction of labor as it offers online wireless monitoring for important parameters of the LFR such as solar irradiance, ambient temperature, outlet and inlet collector temperature and heat transfer fluid flow. For that purpose, a wireless sensor network (WSN) based on Arduino Mega boards coupled with XBee modules are used. The ZigBee XBee modules operate at 2.4 GHz, which have the advantages of being low cost and relatively low power consumption. The wireless nodes are supplied by solar paneled power banks, and send the data to a cloud in order to monitor both LFR plants remotely. The proposed system has been implemented and tested successfully before the future deployment on the LFR plants.

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Borshchov, V. M., O. M. Listratenko, M. A. Protsenko, I. T. Tymchuk, O. V. Kravchenko, O. V. Syddia, I. V. Borshchov i M. I. Slipchenko. "Combined heat conductive boards with polyimide dielectrics". Radiotekhnika, nr 212 (28.03.2023): 115–26. http://dx.doi.org/10.30837/rt.2023.1.212.10.

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Heat-conductive properties of thin heat-conductive polyimide dielectrics have been studied and their thermal resistances have been calculated. Possibility of creating combined printed circuit boards on heat-conductive bases with reduced thermal resistances of polyimide dielectrics from ~ 0.2 to ~ 0.04 °С /W is confirmed. Design parameters and thermal properties of the combined boards with thin polyimide (PI) dielectrics for receivers of concentrated solar radiation are studied. Possibility of providing thermal resistances of PI dielectrics not exceeding 0.43 °С/W has been confirmed. Technical solutions of volumetric light-emitting diode (LED) modules on combined heat-conductive boards, which are 3D-holders-heat sinks, made in the form of single heat-conductive light-reflecting mirrored element, are studied. High thermal characteristics of the modules were achieved due to increase in the area of heat sink holders by more than 2.5 – 3 times compared to flat-type LED modules. Scientific and technical sources were analyzed for selection of modern polyimide materials intended for development and manufacture of combined boards on heat-conductive bases with dielectrics made of polyimide films with increased thermal conductivity up to 0.36 – 0.75 W/(m•K). Potential possibility of creating effective combined printed circuit boards on heat-conductive basis, including those that can be bent, is confirmed using modern industrially manufactured thin heat-conductive PI films with heat-sealable thermoplastic coatings that provide the value of total thermal resistance of boards from 1.5 up to 2.8 °C•cm2/W.

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Damayanti, Herna Octivia. "FAKTOR-FAKTOR YANG MEMPENGARUHI PRODUKSI IKAN PADA NELAYAN KECIL (Studi di Desa Pecangaan Kabupaten Pati)". Jurnal Litbang: Media Informasi Penelitian, Pengembangan dan IPTEK 12, nr 2 (26.12.2018): 83–92. http://dx.doi.org/10.33658/jl.v12i2.39.

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ENGLISHThe first fisheries management goal is to improve small fishermen’s quality of life. The small fishermen’s quality of life depends on the amount of income earned from the fishing activities. The purposes of this research are (1) to analyze the factors that influence the production of the fishermen in Pecangaan Village, (2) to calculate the return to scale of fishermen in Pecangaan Village. This research used descriptive quantitative method and was conducted on August 2016. The research location is in Pecangaan Village, Batangan Subdistrict. It mainly used primary data derived from the respondent (the fisherman in Pecangaan village). Secondary data were derived from the government of Pecangaan Village, Batangan Subdistrict. The number of processed data was 50 samples. The data analysis used Cobb-Douglas production function, in which dependent variable was production quantities and independent variable were: the amount of solar; the number of days at sea; the number of hours at sea; the sailing distance;fishermen’s consumption during the sailing, GT boats, number of crew and net’s width. The results of the research are (1) the significant factors are the number of days at sea; fishermen’s consumption during the sailing, GT boats and net’s width. Meanwhile, the insignificant factors are the amount of solar; the number of crew, the sailing distance and the number of hours at sea. (2) The value of return to scale in the production offisherman in Pecangaan Villageis -8.699, means it is in the condition of decreasing return to scale. INDONESIATujuan pengelolaan perikanan yang pertama yaitu untuk meningkatkan taraf hidup nelayan kecil. Taraf hidup nelayan kecil berhubungan dengan jumlah pendapatan yang diperoleh dari hasil tangkapan ikan yang didapat. Tujuan penelitian adalah (1) untuk menganalisis faktor-faktor yang mempengaruhi produksi nelayan Desa Pecangaan, (2) untuk menghitung skala hasil (return to scale) nelayan Desa Pecangaan. Penelitian ini menggunakan metode deskriptif kuantitatif dan dilaksanakan pada bulan Agustus 2016. Lokasi penelitian yaitu di Desa Pecangaan Kecamatan Batangan. Jenis data yang digunakan adalah data primer berasal dari responden (nelayan di Desa Pecangaan). Sedangkan data sekunder berasal dari Pemerintah Desa Pecangaan Kecamatan Batangan. Data yang diolah berjumlah 50 sampel. Analisis data dengan fungsi produksi Cobb-Douglas, dengan variabel terikat jumlah produksi dan variabel bebas adalah jumlah solar, jumlah hari melaut, lama trip, jarak melaut, konsumsi, GT kapal, jumlah ABK dan luas jaring. Hasil penelitian adalah (1) Faktor yang signifikan yaitu jumlah hari melaut, konsumsi, GT kapal dan luas jaring. Untuk faktor yang tidak signifikan adalah jumlah solar yang digunakan, jumlah ABK, jarak melaut dan lama melaut. (2) Nilai return to scale pada produksi nelayan Desa Pecangaan adalah -8,699 artinya dalam kondisi skala hasil yang menurun (decreasing return to scale).

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