Journal articles: 'Fuel pumps Design and construction'

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Bayramov, E. E. "New combined well design to protect electric submersible pump from sand flow." SOCAR Proceedings, no. 1 (March 31, 2022): 061–66. http://dx.doi.org/10.5510/ogp20220100629.

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The paper presents a new well construction in order to eliminate the unpleasant complications associated with the appearance of sand flow in the Electric Submersible Pumps (ESP), which is widely used in oil wells in the final stage of reservoir development. The new design is based on the combination of ESP with a Mixer based on the principle of ejector and centrifugal. The combined well construction limits the ESP to be in contact with the sand flow and prevents potential erosion and other complications. The design was modeled and tested in the laboratory condition. Keywords: field; layer; pump; well construction; sand production; sand separator.

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Романенко, Игорь Сергеевич, and Александр Витальевич Белогуб. "АНАЛИЗ ОСОБЕННОСТЕЙ МОДЕЛИРОВАНИЯ ПРОЦЕССОВ В ТОПЛИВНЫХ ШЕСТЕРЕННЫХ НАСОСАХ ГТД." Aerospace technic and technology, no. 7 (August 31, 2020): 24–30. http://dx.doi.org/10.32620/aktt.2020.7.04.

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The article touches upon the issues of the operating process in the elements of the external gear pump modeling. The external gear pump is the part of the gas turbine engine and pumps a low-viscosity fluid – kerosene. The article shows that sleeve bearings in such pumps continue to operate at boundary friction modes while rotation speed is increased. It also shows that the end and radial clearances are variable, and the drain system is not optimal which prevents the modeling of the system by classic approach. The main elements of the pumping unit of the external gear pump are described in the article. A simplified geometric model, which forms the basis for the analysis of the pump operation, is given as well. The problems arising during the design stage, fine-tuning, and operation of external gear fuel pumps are briefly described. A preliminary analysis of the design methods showed that several parameters of the working process are not studied well enough to provide the basis for optimal construction design and its qualitative assessment within the design stage. The description of gears operation, the system of end clamping, end, and radial plain bearings is given. The analysis of pressure distribution models is given. The analysis takes into account pressure distribution from linear distribution in the delivery chamber to the pressure drop on one tooth. Distributions from different calculation methods and literature sources are compared as well. The features of bearing loading and the conditions of their operation and lubrication are described. Based on the preliminary calculations, recommendations in the literature, and experimental data, the operation features analysis of the gear fuel pump of the gas turbine engine is carried out. There are defined problems that will provide answers to the main modeling issues in the article: pressure distribution in the intertooth displacement chamber during stationary and transient operating; fluid leakage through variable end clearances and radial clearances; dynamic of the gears and associated parts movement; the influence of external conditions (temperatures, pressures, external vibrations, etc.) on the operation of the pump in general.

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Bajerlein, Maciej, Wojciech Karpiuk, and Rafał Smolec. "Application of Gas Dissolved in Fuel in the Aspect of a Hypocycloidal Pump Design." Energies 15, no. 23 (December 2, 2022): 9163. http://dx.doi.org/10.3390/en15239163.

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The advancement of modern injection systems of diesel engines is related to a constant increase in the injection pressures generated by injection pumps. This translates into an improvement of the engine operation indexes, including the emission-related ones. Such an approach brings a series of problems related to the design, construction and durability of the injection system. Therefore, the authors asked whether the current market trend in injection systems is the only appropriate path to be taken. When searching for the answer, the authors decided to propose an innovative concept consisting of dissolving exhaust gas in diesel fuel with the use of an injection pump. Such a saturated solution, when flowing out of the injection nozzle, begins the process of releasing the gas dissolved in the fuel. This has a positive impact on the atomization process, hence the process of combustion. The aim of this paper stems from the previously performed research. Due to the nature of the phenomenon, it was necessary to propose a new design for the injection pump. For correct selection of the dimensions of the pumping section, it was of key importance to determine the coefficient of solubility and the bulk modulus of the solution of diesel fuel and exhaust gas. Aside from the description of the applied method and the results of the direct measurements, this paper presents the yet undescribed results of the measurements of the coefficient of solubility of different concentrations of exhaust gas in diesel fuel. The authors also investigated the influence of the amount of exhaust gas dissolved in the fuel on the bulk modulus of the solution. The final part of the paper is a description of a proprietary design of a hypocycloidal injection pump. The application of the innovative drive allows a correct dissolution of exhaust gas in the fuel.

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Burdykin, V. D. "Increasing the stability of fuel injection pump process." Traktory i sel hozmashiny 79, no. 8 (August 15, 2012): 38–40. http://dx.doi.org/10.17816/0321-4443-69478.

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A patented construction of plunger and barrel assembly is proposed. A ball valve is placed in its axial bore to eliminate the fuel flowing into low pressure cavity during the injection process. The design of plunger and barrel assembly and its operation concept are considered.

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Cetin, Halil. "Investigation of the Effects of Hydraulic System on Loading Speed and Fuel Consumption in Forklifts." Journal of Advance Research in Mechanical & Civil Engineering (ISSN: 2208-2379) 5, no. 11 (November 30, 2019): 01–09. http://dx.doi.org/10.53555/nnmce.v5i11.824.

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In this study, the effects of hydraulic systems on lift speeds and fuel consumption of diesel forklifts were investigated. Well-known forklift models produced on the subject were examined.Literature review was done on the subject. Forklifts usually with the help of a single pump, the driver steering and lift hydraulic system is working.In our project, as the original value, two separate pumps are used for steering and elevator.In this way, during the operation, the steering is not consumed power. This extra power, which is not used for steering, increases the lifting capacity of the fork in the lift during load lifting. The hydraulic working system of our model is shown in mathematics and physics. Also with solidworks, we found the capacity values for fork lifting. The load lifting capacity values of the hydraulic system of our prototype model and the other hydraulic systems of the equivalent models were explained. The performance of our model seems to be quite good in terms of its load-bearing capacity, among other models that do not apply a dual hydraulicsystem. The design and construction of our model was completed and performance tests were performed. It is also possible to apply the tandem hydraulic system to other forklift models.

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Nasrullah, Hamid, and Ragil Saputra. "RANCANG BANGUN FUEL PUMP PRESSURE TESTER PADA MOTOR INJEKSI." Jurnal E-Komtek (Elektro-Komputer-Teknik) 3, no. 1 (November 12, 2019): 13–21. http://dx.doi.org/10.37339/e-komtek.v3i1.127.

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Pressurized fuel is fuel that is pumped by a fuel pump (fuel pump) from the fuel tank to the injector. Fuel pressure that is too low will greatly affect the performance of the engine and the risk of engine failure. Fuel pressure measurement aims to determine the performance of the fuel pump (fuel pump) is still able to work well or not. The method used is a qualitative method. The construction design starts from the planning process which includes making the concept of design, observation and processing of data so that it is found that the design is capable of reading fuel pressure from the fuel pump and is easy to use. To strengthen the results of the study, it is complemented by a literature review that has close relevance to the subject matter. Based on the results of testing that has been achieved from the entire process of making and testing the design of fuel pump pressure tester on injection motors, it can be concluded that the functional test in the last process shows that the tool can work well and is able to provide information on fuel pressure measurements from the fuel pump.

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Mah, Wonjune, and Chang-Lak Kim. "Application of an Independent Temporary Spent Fuel Storage Pool Cooling System for Decommissioning of Pressurized Water Reactor Kori Units 3 and 4." Energies 16, no. 2 (January 16, 2023): 1009. http://dx.doi.org/10.3390/en16021009.

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The operating license of Kori units 3 and 4 are to be expired in 2024 and 2025. If the plants are decided to be decommissioned, the spent nuclear fuels in the spent fuel storage pool (SFP) have to be removed from the site. However, no proper storage facility is currently available in Korea. To overcome the difficulty, this study proposes application of an independent temporary SFP cooling system. It is expected to safely isolate the SFP from the plant. The case study conducted showed this concept is achievable and technically mature. Moreover, the installation cost per unit is USD 9.51 million obtained from an analogous estimating. This is much lower cost than the dry cask options. Then, system requirements and applicable design are developed. Maximum heat generation of unit 4 is estimated as 1.67 MW, through fuel characteristics categorizations and ORIGEN calculations. To remove the decay heat, installation of an indirect air-cooled method is selected by evaluating three cooling methods. The modification includes new heat exchanger, secondary cooling pumps, and chillers. Furthermore, two single failures are considered; cooling pump and normal power. This can be covered by two redundant trains and a back-up diesel generator provided.

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Nikiforov, A. D., and P. K. Roy. "Functional-technological synthesis to ensure suitability of component designs in modular construction of centrifugal pumps." Chemical and Petroleum Engineering 29, no. 1 (January 1993): 3–6. http://dx.doi.org/10.1007/bf01149386.

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KARPIUK, Wojciech, Maciej BAJERLEIN, Marek IDZIOR, and Rafał SMOLEC. "Volumetric losses of the compression process in a hypocycloidal pump in the light of the gas desorption effect." Combustion Engines 186, no. 3 (September 13, 2021): 72–79. http://dx.doi.org/10.19206/ce-141270.

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The effect of gas desorption from the solution with nucleation of gas bubbles is a process that allows to improve fuel atomization in diesel engines. The advantage of such a process, which has been experimentally proven, is a significant reduction in harmful emissions. The conducted research highlighted one of the fundamental problems. This problem concerned the injection pump - it was necessary to design a new construction that would be adapted to the desorption effect. The authors of the work proposed a construction based on a hypocycloidal drive. Due to the nature of the process, i.e. the use of exhaust gases dissolved in diesel fuel, it was very important to analyze the volumetric losses of the compression process - this is the main goal of this article. The authors proved that for the adopted design assumptions, the power of volumetric losses resulting from compressibility is 0.25% of the power consumed by the pump.

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Sevindik, Selman, and Catalina Spataru. "An Integrated Methodology for Scenarios Analysis of Low Carbon Technologies Uptake towards a Circular Economy: The Case of Orkney." Energies 16, no. 1 (December 29, 2022): 419. http://dx.doi.org/10.3390/en16010419.

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This study aims to create a comprehensive, holistic approach to evaluate the environmental, energy, and economic impacts of air source heat pump deployment scenarios through: (i) a life cycle assessment of air source heat pumps in Orkney houses, (ii) energy systems optimisation modelling to optimise the performance of an air source heat pump coupled with thermal energy storage tank to reduce use phase related impacts in Orkney, (iii) modelling of Orkney’s domestic building stock to understand the housing condition, and (iv) economic modelling to analyse the life cycle cost of an air source heat pump and potential savings when replacing conventional heating systems. The results show that an 82% reduction in energy supply could be achieved when ambitious energy efficiency improvement measures are adopted in the circular economy scenario. The use phase related emissions could be reduced by 98% when the air source heat pump becomes the only heating technology in Orkney. However, the life cycle-wide approach suggests that strong commitments are required in the manufacturing stage of these technologies through implementing circular principles, such as including the use of secondary materials, eco-design, and reusability of all components. Moreover, total heating costs paid by consumers in Orkney could be reduced by 84% in the circular economy scenario when air source heat pump uptake is coupled with energy efficiency improvement measures, but it requires a £130 million investment to insulate the whole housing stock of Orkney. Future scenarios indicate that decision-making has significant importance on overall results. Therefore, circular economy standards for air source heat pump manufacturing and deployment are crucial to reduce the negative impacts of fuel poverty and reach the net zero target.

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Carella, Alberta, Luca Del Ferraro, and Annunziata D’Orazio. "Air/Water Heat Pumps in Existing Heating and Hot Water Systems for Better Urban Air Quality and Primary Energy Savings: Scenarios of Two Italian Cities." Energies 16, no. 1 (December 29, 2022): 377. http://dx.doi.org/10.3390/en16010377.

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In a previous work, a significant contribution to urban air pollution, related to fuel-fired heating systems, was recorded. Thus, the replacement of existing boilers for space heating and domestic hot water (DHW) production systems with high-temperature air/water heat pumps (which can operate with radiators, the most common terminals in the existing building stock), is proposed for the improvement of the urban air quality. Scenarios of substitution within the entire residential building stock of two Italian cities, Milan and Salerno, belonging to different climate zones and with their own thermophysical characteristics, were analyzed. For each of them, the consequences of the replacement intervention on emission reduction, primary energy savings and lower CO2 production were evaluated. The results show that reduction of primary energy consumption, evaluated at design outdoor temperature and for the present generation mix, varied between 34% and 54% in Milan and between 43% and 60% in Salerno, for two values of renewable fraction in electricity generation. The reduction of CO2 production was in the range 30–52% in Milan and 39–58% in Salerno, respectively. The only unfavorable case occurred for Milan for a completely non-renewable electricity generation scenario. The replacement intervention, which implies a significant decrease of emissions of pollutants in urban areas, is unobtrusive to citizens, since the heat pumps (HPs) are coupled with current radiators, without the internal distribution system being modified.

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Lu, Dao-gang, Fan Zhang, Dan-ting Sui, Xue-zhang Xi, and Lei-bo Yu. "Full Scope Modeling and Analysis on the Secondary Circuit of Chinese Large-Capacity Advanced PWR Based on RELAP5 Code." Science and Technology of Nuclear Installations 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/913274.

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Chinese large-capacity advanced PWR under construction in China is a new and indispensable reactor type in the developing process of NPP fields. At the same time of NPP construction, accident sequences prediction and operators training are in progress. Since there are some possible events such as feedwater pumps trip in secondary circuit may lead to severe accident in NPP, training simulators and engineering simulators of CI are necessary. And, with an increasing proportion of nuclear power in China, NPP will participate in regulating peak load in power network, which requires accuracy calculation and control of secondary circuit. In order to achieve real-time and full scope simulation in the power change transient and accident scenarios, RELAP5/MOD 3.4 code has been adopted to model the secondary circuit for its advantage of high calculation accuracy. This paper describes the model of steady state and turbine load transient from 100% to 40% of secondary circuit using RELAP5 and provides a reasonable equivalent method to solve the calculation divergence problem caused by dramatic two-phase condition change while guaranteeing the heat transfer efficiency. The validation of the parameters shows that all the errors between the calculation values and design values are reasonable and acceptable.

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Susanto, Danar Agus, Utari Ayuningtyas, Hermawan Febriansyah, and Meilinda Ayundyahrini. "EVALUASI INSTALASI POMPA AIR TENAGA SURYA DI INDONESIA DENGAN MENGGUNAKAN STANDAR IEC 62253-2011." Jurnal Standardisasi 20, no. 2 (August 10, 2018): 85. http://dx.doi.org/10.31153/js.v20i2.687.

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<em>Water pumps using solar power have been widely applied in Indonesia, especially in remote areas with limited power and the difficulty of fuel oil. Installation of PATS for remote areas is very beneficial, both socially, economically and environmentally. However, PATS installed can not maximize its efficiency even can experience problems and system failures when installed, used and maintained not in accordance with the procedure. The International Electrotechnical Commission (IEC) has established the IEC 62253-2011 standard on Photovoltaic pumping systems - Design qualification and performance measurements. This standard can be used as guidance and procedure in PATS installation system, so the problems in PATS can be minimized. The purpose of this research is to mapping the problem of installation of PATS by using parameters in standard IEC 62253-2011. This research uses gap analysis method to find the gap between PATS installation in Indonesia with standard parameter of IEC 62253-2011. The result of research through gap analysis indicate that 51% aspect in IEC 62253-2011 is not fulfilled by user which enable decrease efficiency even PATS system failure, although actually all parameters in the IEC 62253-2011 standard may be possible. The biggest aspect that is not met is related to the availability of operating and maintenance handbook for the pump maintenance staff at the PV pumping site and maintenance handbook covering operation, repair and servicing. This makes it possible for operator ignorance to install, operate and maintain the system, so that human error becomes the most dominant factor in PATS system application. The PV generator becomes the product aspect that most not complies with standard with percentage of 71%, although there are 22 SNI about PV covering module, installation, testing and construction.</em>

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Chen, Li, Keda Xu, Zuyong Yang, Zhen Yan, and Zuomin Dong. "Optimal Design and Operation of Dual-Ejector PEMFC Hydrogen Supply and Circulation System." Energies 15, no. 15 (July 27, 2022): 5427. http://dx.doi.org/10.3390/en15155427.

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A proton exchange membrane fuel cell (PEMFC) system requires an adequate hydrogen supply and circulation to achieve its expected performance and operating life. An ejector-based hydrogen circulation system can reduce the operating and maintenance costs, noise, and parasitic power consumption by eliminating the recirculation pump. However, the ejector’s hydrogen entrainment capability, restricted by its geometric parameters and flow control variability, can only operate properly within a relatively narrow range of fuel cell output power. This research introduced the optimal design and operation control methods of a dual-ejector hydrogen supply/circulation system to support the full range of PEMFC system operations. The technique was demonstrated on a 70 kW PEMFC stack with an effective hydrogen entrainment ratio covering 8% to 100% of its output power. The optimal geometry design ensured each ejector covered a specific output power range with maximized entrainment capability. Furthermore, the optimal control of hydrogen flow and the two ejectors’ opening and closing times minimized the anode gas pressure fluctuation and reduced the potential harm to the PEMFC’s operation life. The optimizations were based on dedicated computational fluid dynamics (CFD) and system dynamics models and simulations. Bench tests of the resulting ejector-based hydrogen supply/circulation system verified the simulation and optimization results.

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Życzyńska, Anna, Zbigniew Suchorab, Dariusz Majerek, and Violeta Motuzienė. "Statistical Analysis of the Variability of Energy Efficiency Indicators for a Multi-Family Residential Building." Energies 15, no. 14 (July 11, 2022): 5042. http://dx.doi.org/10.3390/en15145042.

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During the building design phase, a lot of attention is paid to the thermal properties of the external envelopes. New regulations are introduced to improve energy efficiency of a building and impose a reduction of the overall heat transfer coefficient; meanwhile, this efficiency is more influenced by the efficiency of the heating system and the type of fuels used. This article presents a complex analysis including the impact of: heat transfer coefficient of the envelope, efficiency of building service systems, the type of energy source, and the fuel. The analysis was based on the results of simulation tests obtained for an exemplary multi-family residential building located in Poland that is not equipped with a cooling system. The conducted calculations gave quantitative evaluation of the influence of particular parameters on building energy performance and showed that the decrease of heat transfer coefficient of building boundaries, in accordance to the Polish regulation for 2017 and 2021, gave only 11% of reduction on usable energy demand index. On the other hand, it was found that modification of the heating system and heat source can significantly influence the values of the final and primary energy consumption at the level of 70%. The application of heat pumps has a greater influence on the final and primary energy consumption for heating indices than other parameters, such as the building’s envelopes.

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Pokusaev, Mikhail Nikolaevich, Sergey Vladimirovich Vinogradov, Konstantin Olegovich Sibryaev, and Maxim Michailovich Gorbachev. "Experience in creating laboratory of ship auxiliary mechanisms for training marine engineers in Astrakhan State Technical University." Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2020, no. 1 (February 17, 2020): 22–30. http://dx.doi.org/10.24143/2073-1574-2020-1-22-30.

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The article focuses on the functional capabilities, technical characteristics and bench composition of the laboratory of ship auxiliary mechanisms, which was created at the Department of Operation of Water Transport at the Astrakhan State Technical University (ASTU) for training marine engineers. The laboratory provides the students with professional competencies in such aspects of the mechanical engineer’s operation as ship turbo machines, ship auxiliary mechanisms and systems, automatic control systems, operation of ship boiler rooms and steam generating plants, etc. There have been presented the pictures of laboratory test benches for testing the P01 ship steering machine and ЯШ-2Р anchor mooring pin, РCC-6.3/10 ship fan, TKР-700 turbo compressor, gear fuel pump Ш5-25-3Б, prototypes of TГ-16M gas turbine generator and ГTД-16M gas turbine engine. Using the laboratory test benches for auxiliary mechanisms and systems helps to both consolidate the theory and gain the new practical knowledge on the design, operation principles and testing skills of the ship steering machine, deck equipment, ventilation systems gear pumps, turbochargers, etc. It has been stated that all the laboratory facilities, except for the GD-IN model (facilities for studying the pump operation and constructing pressure-flow characteristics), were developed and assembled by the students and teachers on the basis of the real ship equipment. The laboratory tests are based on regulatory and technical documents: the rules of the Russian Maritime Register of Shipping, machine operating instructions, relevant GOSTs, guidance and regulatory documents. Building the laboratory of auxiliary mechanisms and systems and optimizing the time for practical and laboratory training of ship mechanical engineers at ASTU were carried out in accordance with the requirements of the new educational standard GEF 3++ of higher education and the International Convention on Training and Certification of Sailors and Watchkeeping (The Manila amendments to the STCW Convention and Code).

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Vanegas Mahecha, Pedro, and Alfonso Parra Coronado. "Designing, constructing and evaluating a dynamic prototype dryer for obtaining rolled dehydrated fruit pulp." Ingeniería e Investigación 31, no. 1 (January 1, 2011): 163–70. http://dx.doi.org/10.15446/ing.investig.v31n1.20540.

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This paper describes how a functional prototype for a dynamic dryer was designed, along with its basic parts: drying tunnel, mechanical transport system for material inside the equipment and selecting and designing a system for supplying hot air. A simple transport mechanism was implemented which allowed combining two flow dispositions: parallel and countercurrent flow. Mango (Mangifera indica L) pulp was dehydrated using three dryer air temperatures (50°C, 60°C and 70°C) and three drying air speeds inside the dryer (1.6, 2.2, 3.4 m s-1) for evaluating the prototype. Propane gas was used as fuel for heating the air. The prototype design led to dehydrating fruit pulp having 4.26 bs smooth initial humidity content up to a 0.11 db final humidity content, with 8-hour drying time (70°C and 3.4 m s-1 air speed), assuming 4.5± 0.5 mm pulp thickness, in 300 x 180 mm and 15 mm height rectangular trays. 1.5 0.5 mm thickness rolled dehydrated pulps were obtained in these conditions The final product had 0.60a (aw) water activity providing for a stable product, having low water content and very similar characteristics to those of the fresh product (shown by Weende analysis).

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Zacherl, Florian, Christoph Wopper, Peter Schwanzer, and Hans-Peter Rabl. "Potential of the Synthetic Fuel Oxymethylene Ether (OME) for the Usage in a Single-Cylinder Non-Road Diesel Engine: Thermodynamics and Emissions." Energies 15, no. 21 (October 26, 2022): 7932. http://dx.doi.org/10.3390/en15217932.

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Non-road sectors, such as agriculture and construction machinery, require high energy densities and flexibility in use, which is why diesel engines are mainly used. The use of climate-neutral fuels, produced from renewable energies, such as Oxymethylene Ether (OME) as a diesel substitute, can significantly reduce CO2 and pollutant emissions in these sectors. In addition to CO2 neutrality, OME also offers improved combustion characteristics compared to diesel fuel, eliminating the soot–NOx trade-off and thus enabling new opportunities in engine design and calibration. In this paper, the combustion of pure OME on a close-to-production, single-cylinder non-road diesel engine with a pump–line–nozzle injection system is analyzed. A variation of the center of combustion at constant power output was performed for diesel and OME at different operating points. Two injectors were investigated with OME. A study on ignition delay and a detailed thermodynamic analysis was carried out. In addition, the exhaust emissions CO, NOx, VOC, as well as particulate-matter, -number and -size distributions were measured. With OME, a significantly shorter ignition delay as well as a shortened combustion duration could be observed, despite a longer injection duration. In addition, the maximum injection pressure increases. VOC and CO emissions are reduced. Particulate matter was reduced by more than 99% and particle number (>10 nm) was reduced by multiple orders of magnitude. The median of the particle size distribution shifts from 60 to 85 nm (diesel) into a diameter range of sub 23 nm (OME). A significant reduction of NOx emissions with OME enables new degrees of freedom in engine calibration and an efficiency advantage without hardware adaption.

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Dzhonova-Atanasova, Daniela, Aleksandar Georgiev, Svetoslav Nakov, Stela Panyovska, Tatyana Petrova, and Subarna Maiti. "Compact Thermal Storage with Phase Change Material for Low-Temperature Waste Heat Recovery—Advances and Perspectives." Energies 15, no. 21 (November 5, 2022): 8269. http://dx.doi.org/10.3390/en15218269.

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The current interest in thermal energy storage is connected with increasing the efficiency of conventional fuel-dependent systems by storing the waste heat in low consumption periods, as well as with harvesting renewable energy sources with intermittent character. Many of the studies are directed towards compact solutions requiring less space than the commonly used hot water tanks. This is especially important for small capacity thermal systems in buildings, in family houses or small communities. There are many examples of thermal energy storage (TES) in the literature using the latent heat of phase change, but only a few are commercially available. There are no distinct generally accepted requirements for such TES systems. The present work fills that gap on the basis of the state of the art in the field. It reviews the most prospective designs among the available compact latent heat storage (LHS) systems in residential applications for hot water, heating and cooling and the methods for their investigation and optimization. It indicates the important characteristics of the most cost- and energy-efficient compact design of an LHS for waste heat utilization. The proper design provides the chosen targets at a reasonable cost, with a high heat transfer rate and effective insulation. It allows connection to multiple heat sources, coupling with a heat pump and integration into existing technologies and expected future scenarios for residential heating and cooling. Compact shell-tube type is distinguished for its advantages and commercial application.

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Young, Brian. "Design of Homologous Ram Pumps." Journal of Fluids Engineering 119, no. 2 (June 1, 1997): 360–65. http://dx.doi.org/10.1115/1.2819142.

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The hydraulic ram pump was invented over 200 years ago but became obsolete with the availability of mains water. Ram pumps make use of a renewable energy resource and are environmentally friendly. They are particularly appropriate for use in the developing world as their construction is basic and robust and they are inexpensive and easy to install and maintain. Unfortunately, simple rational design procedures applicable to any size of pump are not available. The paper analyses the behavior of ram pumps under zero recoil conditions from which three nondimensional design relationships, applicable at any delivery head, are derived for beat frequency, quantity delivered, and source capacity in terms of the independent variables. These relationships incorporate constants consistent with existing experimental results. Recommendations are given for the maximum length of drive pipe which supersede traditional rules-of-thumb for the ratios L/D and L/H. The procedure allows selection of all system parameters, including the drive pipe length, for a set of homologous ram pumps.

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Young, B. W. "Generic design of ram pumps." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 212, no. 2 (March 1, 1998): 117–24. http://dx.doi.org/10.1243/0957650981536646.

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The hydraulic ram pump was invented over 200 years ago but became obsolete with the general availability of mains water. It is used for pumping surface water and is powered by the potential energy of the supply. Ram pumps are particularly appropriate for use in remote regions of the developing world as their construction is basic and robust and they are inexpensive and easy to install and maintain. A rational design procedure applicable to any ram pump is described in this paper. The method is based on the three non-dimensional relationships that have been found to govern ram pump behaviour. The relationships express beat frequency, quantity delivered and source capacity in terms of the independent variables. By assigning upper and lower bounds to the critical velocity in the drive pipe, it is possible to derive three characteristic pump parameters from which the dependent variables may be determined directly. These parameters all take the same numerical values within a feasible design space. The design method has been confirmed using the results of existing experiments. A number of examples are given which illustrate the ease and rapidity of the procedure.

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Maksimov, Y. V., V. K. Sokovikov, A. A. Bekaev, and P. I. Strokov. "The fuel pump of a new generation." Izvestiya MGTU MAMI 6, no. 2-1 (January 20, 2012): 241–45. http://dx.doi.org/10.17816/2074-0530-68511.

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Bekaev@list.ru Based on the electrohydraulic effect, also known as the “Yutkin effect”, the authors developed a brand new design of an electro-hydraulic fuel pump of high pressure, providing performance superior (for pressure and flow rate) than modern high pressure fuel pumps of internal combustion engines. Application of the developed electro-hydraulic pump for internal combustion engines will completely eliminate the use of a mechanized actuator, an integral part of modern fuel pumps, and thus greatly simplify the design and operation of fuel system, reduce its metal content, cost and noise.

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Huang, G. Q., and Z. Jiang. "Fuzzy set theoretical approach to design review of fuel pumps." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 216, no. 2 (February 2002): 287–92. http://dx.doi.org/10.1243/0954405021519780.

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Canoose, J. E. "FACTORS IN DESIGN OF FUEL MEASURING PUMPS FOR DIESEL ENGINES." Journal of the American Society for Naval Engineers 37, no. 1 (March 18, 2009): 37–74. http://dx.doi.org/10.1111/j.1559-3584.1925.tb00245.x.

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Rodionov, Yu V., Yu T. Selivanov, D. V. Nikitin, M. V. Sychev, and P. V. Kombarova. "Novel Construction of Liquid Ring Vacuum Pumps." Chemical and Petroleum Engineering 55, no. 5-6 (September 2019): 473–79. http://dx.doi.org/10.1007/s10556-019-00648-z.

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OPRAN, Constantin Gheorghe, Mircea Pricop, and Constantin Teodoru. "Innovative Design of Polymeric Systems Used in Manufacturing of Gear Pumps." Applied Mechanics and Materials 760 (May 2015): 607–12. http://dx.doi.org/10.4028/www.scientific.net/amm.760.607.

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This paper present the results of the researches regarding innovative design of polymeric systems used in manufacturing of gear pumps with application to reversible pumps used both as pumps as well as motors or steps of the flow dividers. It shows the description of reversible gear pump, with compensating seal in the innovative variant and compensation sealing system for reversible pumps – innovative design. For this innovative solution has been developed a system of compensation sealing kit for reversible pumps – innovative design. In order to obtain these products was necessary to make molds for vulcanization and injection molding tools for polymeric products having special construction considering the size and special profile products. They highlight the competitive advantages of innovative compensation sealing system made by polymeric products. The paper also shows numerical analysis of the fluid at gear pumps using innovative compensation sealing proving the correctness and the advantages of new variants of sealing. The performances reversible pump that uses innovative new sealing system are homogeneous and high levels of performance than those with seals in the classic system.

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Huang, George Q., and Zuhua Jiang. "Web-based design review of fuel pumps using fuzzy set theory." Engineering Applications of Artificial Intelligence 15, no. 6 (December 2002): 529–39. http://dx.doi.org/10.1016/s0952-1976(03)00010-1.

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Grokhovskii, D. V. "Rational construction of slotted seals for feed pumps." Chemical and Petroleum Engineering 30, no. 9 (September 1994): 409–12. http://dx.doi.org/10.1007/bf01148811.

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Grokhovskii, D. V. "Optimum design of centrifugal multistage pumps." Chemical and Petroleum Engineering 21, no. 1 (January 1985): 5–7. http://dx.doi.org/10.1007/bf01148289.

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Yalovoi, N. S., and A. M. Kats. "Complex optimal design of centrifugal pumps." Chemical and Petroleum Engineering 35, no. 12 (December 1999): 762–64. http://dx.doi.org/10.1007/bf02360229.

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Labeckas, Gvidonas, and Stasys Slavinskas. "THE RESEARCH OF DIESEL INJECTION PUMPS PERFORMANCE ON BIOFUEL WITH DIFFERENT VISCOSITY RATE." TRANSPORT 17, no. 4 (August 31, 2002): 159–62. http://dx.doi.org/10.3846/16483840.2002.10414034.

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The main purpose of this research work is to determine the influence of fuel viscosity on the performance of diesel injection pumps of different design in order to clear up some of the changes in fuel feeding when running them in accordance with governor characteristics on the biofuel derived from vegetable oil. The given fuel temperature/viscosity relationships and dependencies of fuel feeding on its viscosity applying biofi1el on different injection pumps can be practically useful for adjusting them for the work on bio-diesel. According to the analysis of the got results the in-line diesel injection pumps are more suitable for their adaptation for the work on bio-diesel. In this case only small adjustments of biofuel feeding rate are needed.

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Miran, Sajjad, Muhammad Tamoor, Tayybah Kiren, Faakhar Raza, Muhammad Imtiaz Hussain, and Jun-Tae Kim. "Optimization of Standalone Photovoltaic Drip Irrigation System: A Simulation Study." Sustainability 14, no. 14 (July 12, 2022): 8515. http://dx.doi.org/10.3390/su14148515.

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This paper presents the optimal design of a photovoltaic (PV) drip irrigation system. Designing a PV system is based on calculated motor power, solar irradiance level and other meteorological parameters at a certain geographical location. Therefore, a simulation study of the designed PV system were performed by a PVGIS simulation tool. The PVGIS simulation tool analyzes the potential of power generation with optimal PV modules tilt angle and orientation on a monthly and annual basis, and an analysis of the overall shading situation (horizon) as well as the internal shading between the PV module rows. The selection of water pump and motor depends upon the depth of water table and desired discharge and head to operate the irrigation system. Furthermore, a locally developed Solar-Drip Simulation Tool (SoSiT) was used for load and supply optimization. Based on ambient temperature, solar irradiation and water requirements, SoSiT calculates net generation by a PV system and resultant water output of the irrigation system. The particular drip irrigation site has two zones; the maximum water requirement for zone 1 (row crop) is 50,918.40 Liters/day and for zone 2 (orchards) is 56,908.80 L/day. From PVGIS simulation results, the maximum daily energy production of the designed PV system was 6.48 kWh and monthly energy production was 201 kWh in the month of May. SoSiT results showed that the PV system fulfilled the required crop requirement by only using 28% of the potential water supply, and 72% of the potential water supply from a solar-powered pump was not used. This value is high, and it is recommended to grow more or different crops to utilize the fuel-free electricity from the PV system. The unit cost of PV-powered drip irrigation is USD 0.1013/kWh, which is 4.74% and 66.26% lower than the cost of subsidized electricity and diesel, respectively.

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Timokhin, S. V., Yu V. Rodionov, and I. I. Kurbakov. "Improvement of the technology for controlling the parameters of the lubricating system of the D-245 diesel engine." Intelligence. Innovations. Investment, no. 6 (2020): 163–71. http://dx.doi.org/10.25198/2077-7175-2020-6-163.

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А significant factor affecting the reliability of the internal combustion engine and its technical and Economic indicators is the efficiency of the lubrication system. When the standard oil supply is applied, semiliquid friction occurs between the contacting parts, in which the parts are not completely separated by a layer of oil. However, with this friction, the required durability of components and parts with heat removal is guaranteed. The performance of the engine lubrication system is determined by the state of its elements (coarse and fine filters, oil radiator and pump, valves), as well as the quality of oil, its level in the internal combustion engine crankcase and temperature. In domestic internal combustion engines, the minimum oil level in the crankcase is controlled, but in operation there are situations when the oil level exceeds its maximum permissible value. This situation occurs when coolant or fuel enters the lubrication system. Coolant can get into the oil if the cylinder head gaskets, sleeve o-rings, or cracks in the cylinder head and block are broken. Top-Livo can enter the oil through worn and damaged parts of the fuel equipment (gas pump diaphragm, fuel pump plunger pairs, etc.). These liquids sharply degrade the quality of the oil and increase the wear of internal combustion engine parts, and the standard singlelevel indicator will not give the driver operational information about the malfunction. In connection with the above, the purpose of this work is to improve the technology for monitoring the technical condition of the internal combustion engine lubrication system on the example of the d-245 diesel engine and its modifications, which are widely used in GAZ (GAZ-3309), ZIL (ZIL-5301), MAZ (MAZ Zubrenok), PAZ buses (PAZ-3205), MTZ tractors (MTZ — 100, 892, 1020), agricultural and construction equipment.by developing and implementing a built — in device for monitoring the minimum and maximum oil levels in the crankcase, as well as its temperature. The scientific novelty of the work is due to the use of new circuit and technical solutions, as well as the original algorithm of the sensor operation developed by the authors, based on the use of switching laws of reed switches with normally closed and normally open contacts, the operation of which is spaced over time and controlled oil levels. Block diagram of the proposed device comprises a multifunction sensor level and oil temperature, including sensors of the mi-minimum and increased levels of engine oil in the crankcase of the engine and its temperature, the operation mode switch signal cooling temperature-edusei fluid and engine oil, the first and second voltage сomparators, indicator lights, buzzer, switch power supply, voltage regulator and regular temperature sensor coolant. The use of the developed device significantly increases the reliability and convenience of monitoring one of the most important indicators of internal combustion engines-the oil level in the crankcase, which will avoid significant engine damage. As a result of further research, it is planned to develop the device design, conduct laboratory studies of the developed multifunctional sensor in order to determine the dependence of its resistance on the temperature at the normal level of engine oil in the measuring flask, as well as determine the actual values of the developed sensor response heights at the lower and upper levels.

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Young, B. W. "Design of Hydraulic Ram Pump Systems." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 209, no. 4 (November 1995): 313–22. http://dx.doi.org/10.1243/pime_proc_1995_209_010_01.

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Automatic hydraulic ram pumps are environmentally friendly devices using a renewable energy resource to pump water for domestic or agricultural use. Since being superseded by pumps using electrical or fossil fuel energy nearly a century ago, they are now coming back into favour in many parts of the developing world. In the past, hydraulic ram pumps have been designed by rules-of-thumb having limited scientific basis. On-site adjustment has been used in the hope of rectifying the inevitable shortcomings of this process and ideal performance is rarely achieved. The present proposal for optimum design allows relevant system parameters (including the beat frequency) to be selected prior to installation. The paper shows how a ram pump system may be designed using two simple equations containing empirical factors dependent upon ram size, delivery head, material and wall thickness of the drive pipe and the configuration of the impulse valve. The design method is illustrated with reference to a number of existing tests. New experimental results for a 53 mm ram with five different impulse valve strokes are also presented.

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XING, Tong, Yezhou XU, and Jian RUAN. "Two-dimensional piston pump: Principle, design, and testing for aviation fuel pumps." Chinese Journal of Aeronautics 33, no. 4 (April 2020): 1349–60. http://dx.doi.org/10.1016/j.cja.2019.05.006.

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36

Vikhlyantsev, A. A., A. V. Volkov, Yu V. Yavorovsky, and A. A. Druzhinin. "Method of computer-aided profiling of components of flow passages of centrifugal pumps for fuel and energy complex." Safety and Reliability of Power Industry 12, no. 4 (January 25, 2020): 260–67. http://dx.doi.org/10.24223/1999-5555-2019-12-4-260-267.

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Today, the fuel and energy complex (FEC) is the basis of Russian economy. It includes the most dynamically developing industries, such as petrochemical, oil refining, etc., associated with the production, transportation and processing of various fuels, as well as industries engaged in the production and distribution of electricity: thermal engineering, hydropower engineering and nuclear power engineering. The nomenclature of FEC centrifugal pumps includes a wide list of names: singleand multistage centrifugal pumps of low, medium and high pressure for clean water, water with impurities and various aggressive media [1, 2], pumps for oil production and transportation (trunk, booster, electric centrifugal production pumps, pumps for pumping leaks, etc.) and special pumps used in oil refining (cracking, cantilever chemical, etc.) [3]. The development of technical solutions aimed at improving energy efficiency as well as reliability and durability is one of the trends in the development of centrifugal pumps FEC that are most widely covered in engineering literature [4.9]. Along with this, reducing the complexity and cost of production of these pumps due to the automation of the design process remain just as important. In the given article, questions of development of a method of automated profiling of components of flow passage of centrifugal pumps for needs of FEC are considered. The description of the proposed method and the results of its approbation on the example of profiling of the flow passage of the impeller of the centrifugal cantilever chemical pump AH 12.5/50 are presented. Comparison with other known methods is carried out. The estimation of time costs for design works is carried out. It has been found that the automated profiling of the flow passage of the impeller according to the presented method took 720 times less time than manual profiling using conventional methods.

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Wen, C. Y., and H. T. Chang. "Design and Characterization of Valveless Impedance Pumps." Journal of Mechanics 25, no. 4 (December 2009): 345–54. http://dx.doi.org/10.1017/s1727719100002835.

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ABSTRACTThis study designs, fabricates and characterizes three valveless impedance pumps, namely a symmetrical pump with a circular cross-section, an asymmetrical pump with a circular cross-section, and an asymmetrical pump with a rectangular cross-section. The pressure head and flow rate characteristics of the three pumps are investigated as a function of the compression location, the compression frequency and the compression amplitude. The experimental results show that the flow is reversible in every case. Moreover, the pressure head is found to be significantly dependent on the actuating frequency, the compression location and the compression amplitude. However, no pressure head is produced when the pinching effect is applied at the center of channel configuration for the symmetrical pump. In the symmetrical pump, a maximum pressure head of 590mm is obtained at a frequency of 26Hz, and results in a flow rate of 0.581/min in the positive direction (i.e. from the left-hand reservoir of the pump to the righthand reservoir). Meanwhile, in the asymmetrical pumps with circular and rectangular cross-sections, respectively, maximum pressure heads of −620mm and −570mm are developed at frequencies of 36Hz and 32Hz, respectively. The corresponding flow rates are determined to be 0.641/min and 0.531/min, respectively. In both cases, the fluid moves in the negative direction (i.e. from the right-hand reservoir of the pump to the left-hand reservoir). Overall, the valveless impedance pumps developed in this study generate a high pumping rate, are easily fabricated and have no moving mechanical valves. As a result, they are eminently suitable for pumping applications in such diverse systems as biomedical devices, fuel cells, PC cooling systems, and so forth.

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38

Sukhinenko, V. E., A. G. Ovsienko, E. D. Naumov, and S. D. Medvedev. "Construction and introduction of lubricantless natural gas delivery pumps." Chemical and Petroleum Engineering 31, no. 11 (November 1995): 683–86. http://dx.doi.org/10.1007/bf01155757.

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M.S. Dzhumataev, A.Zh. Bayaliev, and S.T. Solpiev. "TO THE QUESTION OF CREATING A STRUCTURE OF A DOUBLE-PISTON PUMP FOR SUBMITTING SAND-CEMENT MORTAR." Herald of KSUCTA n a N Isanov, no. 3 (September 23, 2019): 404–10. http://dx.doi.org/10.35803/1694-5298.2019.3.404-410.

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This article discusses the issue of creating an import-substituting chopper design for a double-piston pump for supplying sand and cement mortar in order to partially meet the needs of construction organizations of the Kyrgyz Republic for this equipment. The relevance of mastering the production of mortar pumps for the transportation and application of plaster to the surface during the finishing works, pumping solutions into various cavities during construction, repair of buildings and drilling wells plugging is indicated. A review and analysis of the existing mortar pumps was carried out, the qualifications of the mortar pumps by the method of action of the displacer on the pumped solution, in the direction of solution movement in the working chamber during suction were given. The principle of operation is shown and the advantages and disadvantages are noted. Specified prevailing mortar pumps are indicated.

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40

Cahyagi, Danang, Indra Ranu Kusuma, and Adi Kurniawan. "Design HMI (Human Machine Interface) for Process Control System of Main Diesel Engine Fuel System." Applied Mechanics and Materials 874 (January 2018): 88–95. http://dx.doi.org/10.4028/www.scientific.net/amm.874.88.

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Controlling and monitoring of ship fuel treatment system is based on the needs of safety and business. Therefore, ship automatic fuel system is a support system recommended by ship classification society, engine manufacture, and shipping company. The new system may give highly efficiency operation and supervision. In this research, we developed marine diesel fuel system interface to monitor how the systems work. Main diesel engine fuel system consist of transfer system, separation system, feed system, and circulation system. The aim of this research is to control and display the shipboard fuel system. All valves, pumps, and separator units were controlled by programmable logic controller using tank level switches as input signal. We have tested this automation system with a computer simulations. As an initial step, valves, pumps, and separator units are successfully controlled and displayed. Based on program simulation, the operational leading time of settling tank and day tank are one hour and 9,8 hours, respectively. It is mean both of one settling tank or day tank are ready before the another tank empty. This system also have detection ability due to system failure.

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41

Salikhova, M. N., V. A. Aleksandrov, V. S. Kukhar, I. P. Galchak, and A. M. Chudinov. "Increasing the life of plunger and barrel assembly of high pressure fuel pumps." E3S Web of Conferences 282 (2021): 07023. http://dx.doi.org/10.1051/e3sconf/202128207023.

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In order to identify the regularities of further increasing the efficiency of transport and technological machines, it is of interest to consider the issues of determining the impact of their design and technological parameters on the quality of running-in and the operability of fuel pumps. The article analyzes the influence of the initial operating modes and the lubricating medium on the quality of running-in and subsequent performance of high-pressure fuel pumps. On the basis of theoretical studies, equations were obtained to determine the unbalanced radial force acting on the plunger and fuel leaks in the plunger pair. These expressions make it possible to establish the dependence of the specific pressure in the plunger and barrel assembly both on the design and technological parameters of the pump.

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Shiriyazdanov, R. R., and F. Kh Khaliullin. "Efficiency estimation of mechanic regulators of high-pressure fuel injection pumps." Traktory i sel hozmashiny 81, no. 10 (October 15, 2014): 38–39. http://dx.doi.org/10.17816/0321-4443-65544.

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Influence of design parameters of mechanic regulators of fuel injection pumps on dynamic parameters of internal combustion engine operation have been analyzed using mathematical models accounting influence of lever position of a fuel supply regulator and rotation frequency of cam shaft.

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Tao, Ran, Ruofu Xiao, and Fujun Wang. "Detached eddy simulations for high speed axial flow fuel pumps with swept and straight blade impellers." Engineering Computations 33, no. 8 (November 7, 2016): 2530–45. http://dx.doi.org/10.1108/ec-06-2015-0165.

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Purpose High speed axial flow pumps are widely used in aircraft fuel systems. Conventional axial flow pumps often generate radial secondary flows at partial-load conditions which influence the flow structure and form a “saddle-shaped” region in the Q-H curve that can destabilize the operation. Thus, the “saddle-shaped” Q-H region must be eliminated. The paper aims to discuss these issues. Design/methodology/approach The swept stacking method is often used for radial flow control in turbo-machinery impeller blade design. Hence, this study uses the swept stacking method to design a high speed axial flow pump. The detached eddy simulation method and experiments are used to compare the performance of a swept blade impeller in a high speed axial fuel pump with the original straight blade impeller. Both the pump performance and internal flow characteristics are studied. Findings The results show separation vortices in the impeller with the straight blade design at partial-load conditions that are driven by the rotating centrifugal force to gather near the shroud. The swept geometry provides an extra force which is opposite to the rotating centrifugal force that creates a new radial equilibrium which turns the flow back towards the middle of the blade which eliminates the vortices and the “saddle-shaped” Q-H region. The swept blade impeller also improves the critical cavitation performance. Analysis of the pressure pulsations shows that the swept blade design does not affect the stability. Originality/value This study is the initial application of swept blades for axial flow liquid pumps. The results show how the swept stacking changes the radial equilibrium of the high density, high viscosity flow and the effects on the mass transfer and pressure pulsations. The swept blade effectively improves the operating stability of high speed fuel pumps.

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Popov, Viktor, Sergiy Yepifanov, Yevhenii Kononykhyn, and Aleksandr Tsaglov. "Architecture of Distributed Control System for Gearbox-Free More Electric Turbofan Engine." Aerospace 8, no. 11 (October 24, 2021): 316. http://dx.doi.org/10.3390/aerospace8110316.

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This article presents the development of the electric turbofan engine in distributed architecture with a design thrust in the range of 3 to 7.5 and from 7.5 to 30 kN for small and medium-sized unmanned aerial vehicles. The engine subsystems are considered as separate smart modules with a built-in control system, exchanging data via a digital channel with the central engine control and diagnostics unit. The key smart engine units are combined in the following subsystems: starter and turbine generators, oil pumps, actuator of guide vanes, fuel pumps, fuel metering unit, control and diagnostic unit. All pumps and guide vane actuator are electrically driven. Control and monitoring signals are transmitted via a digital bus. Functional and reliability analysis and the technical configuration design of each subsystem are presented. Based on analysis of the architecture of distributed control systems for a gearbox-free electric engine, different configurations of described subsystems are proposed.

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Robello Samuel, G., and Ken J. Saveth. "Optimal Design of Progressing Cavity Pumps(PCP)." Journal of Energy Resources Technology 128, no. 4 (February 7, 2006): 275–79. http://dx.doi.org/10.1115/1.2358142.

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The drive for energy independence has created a window of opportunity for innovations in oil recovery. New artificial lift methods like progressing cavity pumping have been successfully applied to downhole pumping applications. The multilobe pumps are also making inroads into the industry to be used under different operating conditions. Although the design has been mainly based on empirical standards and trial and error modifications, a more phenomenally optimum design of the pump is required to achieve a high efficiency standard. The optimal relationship between the pitch and the diameter of the housing is obtained to achieve a maximum flow rate for multilobe pumps.

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Svoboda, D. G., V. A. Golikov, A. A. Zharkovskii, and A. A. Klyuyev. "Effects of an Impeller Rim and Radial Clearance on Energy Characteristics of an Axial Pump." E3S Web of Conferences 320 (2021): 04006. http://dx.doi.org/10.1051/e3sconf/202132004006.

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The results of numerical and experimental research conducted in the Laboratory for Hydraulic Machinery Construction of Peter the Great St. Petersburg Polytechnic University are presented. The research is aimed at studying the effects of an impeller radial clearance and rim on the energy characteristic of low-pressure axial pumps of the specific speed ns≈600. It is shown that these design features of a flow duct have significant effects on stage parameters, and they have to be accounted for when verifying design and experimental characteristics of axial pumps.

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Renedo, C. J., A. Ortiz, M. Mañana, and J. Peredo. "Optimum design for reversible water–water heat pumps." Energy and Buildings 38, no. 10 (October 2006): 1240–47. http://dx.doi.org/10.1016/j.enbuild.2006.03.021.

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Shvindin, A. I., and A. A. Ivanyushin. "Operation of centrifugal pumps in off-design conditions." Chemical and Petroleum Engineering 45, no. 3-4 (March 2009): 148–51. http://dx.doi.org/10.1007/s10556-009-9163-6.

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Zhang, Xiao Ming, Feng Xu, Jian Min Liu, and Fu Zhou Feng. "Filtering Design and Analysis of Clamp-On Pressure Signals of High Pressure Fuel Pipe." Advanced Materials Research 834-836 (October 2013): 891–95. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.891.

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Measuring the clamp-on pressure of high pressure fuel pipe is a shortcut for obtaining injection parameters and fault diagnosis of the fuel injection pumps [1,. Based on the analysis of the fuel injection process of fuel injection pump, analyzed the differences of practical injection process and geometric injection process, and obtained the theory waveform feature points of diesel engine high pressure pipe fuel injection process. In order to obtain the clamp-on pressure waveform which feature points consistent with the theoretical waveform, designed the hardware filter based on MAX293. Considering the clamp-on pressure signal sometimes must also meet the requirements of no delay, designed frequency domain filter. Two filtering methods have reached the expected results.

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Ragazzon, Giulio, Massimo Baroncini, Serena Silvi, Margherita Venturi, and Alberto Credi. "Light-powered, artificial molecular pumps: a minimalistic approach." Beilstein Journal of Nanotechnology 6 (November 2, 2015): 2096–104. http://dx.doi.org/10.3762/bjnano.6.214.

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The realization of artificial molecular motors capable of converting energy into mechanical work is a fascinating challenge of nanotechnology and requires reactive systems that can operate away from chemical equilibrium. This article describes the design and construction of a simple, supramolecular ensemble in which light irradiation causes the directional transit of a macrocycle along a nonsymmetric molecular axle, thus forming the basis for the development of artificial molecular pumps.

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Journal articles on the topic 'Fuel pumps Design and construction'

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