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Artigos de revistas sobre o tema "Solar engines"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 1 de agosto de 2024

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1

Luo, Haoyan. "Efficiency Improvement and Key Opportunities of Stirling Engine." Highlights in Science, Engineering and Technology 88 (March 29, 2024): 835–46. http://dx.doi.org/10.54097/jwd1s558.

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Amidst the backdrop of an evolving societal landscape, the impending scarcity of energy resources has intensified the quest for innovative energy solutions. The Stirling engine, conceived by the Scottish clergyman Robert Stirling in 1816, emerges as a promising avenue to address contemporary energy challenges. This external combustion engine operates on the fundamental principle of harnessing work from heat transfer coupled with the expansion and contraction of gases. Its versatility lies in its capability to transmute diverse natural energy sources, ranging from wood and solar radiation to ga

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2

Badescu, Viorel. "Simulation of a Solar Stirling Engine Operating Under Various Weather Conditions on Mars." Journal of Solar Energy Engineering 126, no. 2 (May 1, 2004): 812–18. http://dx.doi.org/10.1115/1.1687796.

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A solar stirling engine based on a horizontal selective flat-plate converter is analyzed in this work. A detailed model for the heat losses towards the atmosphere is presented. The engine’s output power is maximised numerically. The analysis is based on meteorological data measured at Viking Landers sites during clear sky and dust storm conditions. All the computations were performed for a solar collection area similar in size with that of Mars Pathfinder’s Sojourner. The efficiency of converting solar energy into mechanical work at noon is as high as 18%. The power provided by the engine is a

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3

Duan, Chen, Shui Ming Shu, Guo Zhong Ding, and Ji Wei Yan. "Preliminary Design and Adiabatic Analysis of a 3kW Free Piston Stirling Engine." Applied Mechanics and Materials 325-326 (June 2013): 277–82. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.277.

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In recent years, as one kind of Stirling engines, free piston Stirling engines are attracting world attention. Free piston Stirling engines could be applied to the solar dish system, micro-CHP system and so on. The development of a free piston Stirling engine is discussed in this paper. The ideal adiabatic model is used in the preliminary design of the free piston Stirling engine. The key parameters of the designed engine and the thermodynamic analysis are described in detail. Then the performance of the engine is obtained.

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4

Dologlonyan, Andrey V., Dmitriy S. Strebkov, and Valeriy T. Matveenko. "Thermodynamic Characteristics of Hybrid Solar Microgas Turbine Plants under Tropical Climate." Elektrotekhnologii i elektrooborudovanie v APK 2, no. 43 (2021): 20–35. http://dx.doi.org/10.22314/2658-4859-2021-68-2-20-35.

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The article presents the results obtained during the study of the characteristics of hybrid solar micro-gas turbine units with an integrated parabolocylindrical solar collector. The efficiency of a hybrid solar gas turbine plant depends both on the efficiency of the solar collector and the location of its integration, and on the efficiency of the gas turbine engine. (Research purpose) The research purpose is in studying hybrid solar gas turbine installations based on a parabolocylindrical focusing solar collector in combination with micro-gas turbine engines of various configurations to determ

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5

Adkins, Douglas R. "Design Considerations for Heat-Pipe Solar Receivers." Journal of Solar Energy Engineering 112, no. 3 (August 1, 1990): 169–76. http://dx.doi.org/10.1115/1.2930476.

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Heat pipes are being developed to transfer solar energy from the focal point of a parabolic dish concentrator to the working fluid of Stirling engines. With these receivers, concentrated solar energy that is absorbed on the concave surface of a dome is removed by the evaporation of liquid sodium on the convex side of the dome. Vaporized sodium then condenses on an engine’s heater tubes and transfers energy to the working fluid of the engine. The condensed sodium returns to the absorber surface where it is redistributed across the dome by the capillary action of a wick. Issues concerning the fl

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6

Valdès, L. C. "Competitive solar heat engines." Renewable Energy 29, no. 11 (September 2004): 1825–42. http://dx.doi.org/10.1016/j.renene.2004.02.008.

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7

Reisz, Aloysius I. "To Go Beyond." Mechanical Engineering 130, no. 11 (November 1, 2008): 42–45. http://dx.doi.org/10.1115/1.2008-nov-2.

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This article discusses experiments with an advanced electromagnetic engine that aims for high-speed, long-distance transportation to reach farther into space. Experimental work at Marshall Space Flight Center in Alabama is attempting to develop an electromagnetic engine designed to achieve higher velocities than current space-engine options and to last longer, too. Space engines with higher specific impulse will sense new science from deep space exploration quicker. In a way, higher specific impulse quickens our intelligence acquisition. Reisz Engineers and the University of Michigan are inves

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8

Tailer, Peter. "Stirling Machines." Energy Exploration & Exploitation 7, no. 4 (August 1989): 262–70. http://dx.doi.org/10.1177/014459878900700405.

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The operation of a basic Stirling engine is explained along with the theoretical advantages of these engines compared to other energy conversion devices. Some recent research and development programs are briefly described which have produced or evaluated Stirling engines for automobiles, submarines, space vehicles, and solar thermal electricity generation. Smaller engines include one designed to power an artificial human heart. Stirling coolers, heat pumps, and other devices may contribute to more efficient energy use.

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9

Topgül, Tolga. "Design, Manufacturing, and Thermodynamic Analysis of a Gamma-type Stirling Engine Powered by Solar Energy." Strojniški vestnik - Journal of Mechanical Engineering 68, no. 12 (January 4, 2023): 757–70. http://dx.doi.org/10.5545/sv-jme.2022.368.

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Stirling engines are external combustion engines. This feature eliminates the possible dependency of the engine on a specific energy resource and allows it to work with diverse energy sources, especially solar and other renewable energy sources. Also, Stirling engines could be built in different configurations that have a significant impact on the engine performance. With these aspects, Stirling engines have attracted the attention of researchers. In this study, firstly, a double-cylinder V-type air compressor has been converted to a gamma-type Stirling engine. The block, cylinders, connecting

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10

Geok Pheng, Liaw, Rosnani Affandi, Mohd Ruddin Ab Ghani, Chin Kim Gan, and Jano Zanariah. "Stirling Engine Technology for Parabolic Dish-Stirling System Based on Concentrating Solar Power (CSP)." Applied Mechanics and Materials 785 (August 2015): 576–80. http://dx.doi.org/10.4028/www.scientific.net/amm.785.576.

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Solar energy is one of the more attractive renewable energy sources that can be used as an input energy source for heat engines. In fact, any heat energy sources can be used with the Stirling engine. Stirling engines are mechanical devices working theoretically on the Stirling cycle, or its modifications, in which compressible fluids, such as air, hydrogen, helium, nitrogen or even vapors, are used as working fluids. When comparing with the internal combustion engine, the Stirling engine offers possibility for having high efficiency engine with less exhaust emissions. However, this paper analy

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11

Schwalbe, Karsten, and Karl Heinz Hoffmann. "Stochastic Novikov Engine with Fourier Heat Transport." Journal of Non-Equilibrium Thermodynamics 44, no. 4 (October 25, 2019): 417–24. http://dx.doi.org/10.1515/jnet-2019-0063.

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Abstract The Stochastic Novikov engine is an endoreversible model for heat engines where the heat supply takes place at a fluctuating temperature. These fluctuations can be observed for example at solar thermal power plants. While recently the influence of the temperature fluctuations on the engine’s performance has been studied for Newtonian heat transport, the relation between the used heat transport type and the performance measures remained open. Therefore, we here consider a Stochastic Novikov engine with Fourier heat transport. Based on a short summary of the concept of a Stochastic Novi

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12

Li, Zhengting, Dinghonglun Lou, and Junhao Pan. "Stirling engines for solar thermal energy and residential purposes." Applied and Computational Engineering 11, no. 1 (September 25, 2023): 118–22. http://dx.doi.org/10.54254/2755-2721/11/20230219.

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The comparison and advantages with other engines and other aspects of Stirling engine in household appliances, to solve the problems caused by existing household appliances, realize the optimization of energy resources and achieve sustainability. A Stirling engine can work in reverse as a heat pump for heating or cooling if supplied with mechanical power. The ultra-low temperature refrigerator using the Stirling engine breaks through the traditional compressor refrigeration method in the noise, efficiency, energy consumption, stability, and other aspects of the long-term dilemma, creating a ne

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13

Thakur, Sejal, and Satya Sandeep Chaganti. "A Study on the Implementation of Nanotechnology in Enhancing the Environmental Changes." Scientific Bulletin 24, no. 2 (December 1, 2019): 168–77. http://dx.doi.org/10.2478/bsaft-2019-0021.

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Abstract The report takes a survey of five crucial areas where nanotechnology is implied. It includes areas of economy through hydrogen, electricity generation with the help of solar cells, fuel additives, batteries, and super capacitors, and insulators. In concern with fuel additives, with the help of nanoparticle, the efficiency of fuel of diesel engines was increased by up to 5 %, which produced about three-million metric tons of CO2 in the UK per year. The study also cautions that this efficiency of fuel additives also led to the release of toxic nanoparticles openly in the environment. Du

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14

García, David, María-José Suárez, Eduardo Blanco, and Jesús-Ignacio Prieto. "Experimental and Numerical Characterisation of a Non-Tubular Stirling Engine Heater for Biomass Applications." Sustainability 14, no. 24 (December 9, 2022): 16488. http://dx.doi.org/10.3390/su142416488.

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In the current context of environmental deterioration and rising energy costs, systems based on Stirling engines are interesting not only because of their proven efficiency and very low noise level, but also because of their ability to use renewable energies. Micro-CHP units based on Stirling engines fuelled by both solar energy and biomass can reduce CO2 emissions on a household scale, but the second option avoids problems usually related to the intermittency of solar energy. This paper describes the geometry and experimental characterisation of a new non-tubular heater design that is potenti

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15

Gussoli, M. K., J. C. D. de Oliveira, and M. Higa. "INVESTIGATION ON VOLUME VARIATION FOR ALPHA STIRLING ENGINES ON ISOTHERMAL MODEL." Revista de Engenharia Térmica 19, no. 2 (December 21, 2020): 10. http://dx.doi.org/10.5380/reterm.v19i2.78608.

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The usage of renewable energies is approximately 11% of the matrix energy worldwide. In countries known for its renewable sources, such as Brazil, the percentage is close to 38%. The importance to study Stirling engines and propose a prototype is that they are a feasible alternative for generation of power and electricity when considering low quality sources such as solar and waste energy. This paper will compare two different approaches of the volume variation, sinusoidal and kinematic, using an isothermal model that represents the Stirling engines. The comparison is made for an a type engine

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16

Nguyen, Tien Han, Prabhu Paramasivam, Van Huong Dong, Huu Cuong Le, and Duc Chuan Nguyen. "Harnessing a Better Future: Exploring AI and ML Applications in Renewable Energy." JOIV : International Journal on Informatics Visualization 8, no. 1 (March 16, 2024): 55. http://dx.doi.org/10.62527/joiv.8.1.2637.

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Integrating machine learning (ML) and artificial intelligence (AI) with renewable energy sources, including biomass, biofuels, engines, and solar power, can revolutionize the energy industry. Biomass and biofuels have benefited significantly from implementing AI and ML algorithms that optimize feedstock, enhance resource management, and facilitate biofuel production. By applying insight derived from data analysis, stakeholders can improve the entire biofuel supply chain - including biomass conversion, fuel synthesis, agricultural growth, and harvesting - to mitigate environmental impacts and a

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17

Gordon, J. M. "On optimized solar-driven heat engines." Solar Energy 40, no. 5 (1988): 457–61. http://dx.doi.org/10.1016/0038-092x(88)90100-4.

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18

Boehm, R. F. "Maximum performance of solar heat engines." Applied Energy 23, no. 4 (January 1986): 281–96. http://dx.doi.org/10.1016/0306-2619(86)90012-7.

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19

Eusha, Muhammad, Wolfgang Schulz, Günter Schumacher, Faraz Rasheed Mir, and Gerhard Schories. "Non-combustion non-solar deployment characterization of a free-piston Stirling engine to integrate with an exothermic reactor." Open Research Europe 1 (December 21, 2021): 155. http://dx.doi.org/10.12688/openreseurope.14361.1.

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Background: A small 1 kW free-piston β type Stirling engine was tested for its feasibility of integration with an exothermic reactor under the EU funded research project SOCRATCES (GA 727348). The engine’s heat receptor was minimally modified to adapt it to the reactor’s integration needs, introducing, instead of a combustion chamber, a CFD-optimized hooded enclosure. The open-loop configuration also included a small plate heat exchanger acting as a recuperator. The study attempted to investigate the performance of the Stirling engine under these non-combustion non-solar deployment conditions,

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20

Reisz, Aloysius I., and Stephen L. Rodgers. "Engines for the Cosmos." Mechanical Engineering 125, no. 01 (January 1, 2003): 50–53. http://dx.doi.org/10.1115/1.2003-jan-4.

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This article highlights how exploration of deep space requires systems of propulsion that can go the distance. To explore the outer planets in a reasonable time, engines must generate either high exhaust velocity or high specific impulse. The United States recognized early the benefit that nuclear propulsion could provide for interplanetary exploration and ran an extensive research and development program devoted to it. Electric propulsion devices require an energy source and an electric generation method in order to operate. Engines being engineered for deep space missions are, out of necessi

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21

Jiang, Wei Jiang. "The Study of Heat-Engines Based on Refrigerant Phase-Change Circulation." Applied Mechanics and Materials 66-68 (July 2011): 649–53. http://dx.doi.org/10.4028/www.scientific.net/amm.66-68.649.

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This paper firstly introduces the principles of Stirling heat engines based on refrigerant phase-change circulation. This heat engines use two external heat reservoire. When the refrigerant in an engine cylinder absorbs heat from high-temperature heat sources, refrigerant is transformed from liquid to gas and the volume of the refrigerant expands to drive the piston apply work. When the refrigerant releases heat to low-temperature sources, the volume of the refrigerant shrinks. Therefore, phase change thermal engine technology using solar energy, industrial waste heat and heat produced by comb

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22

Kussul, Ernst, Oleksandr Makeyev, Tatiana Baidyk, and Omar Olvera. "Design of Ericsson Heat Engine with Micro Channel Recuperator." ISRN Renewable Energy 2012 (November 14, 2012): 1–8. http://dx.doi.org/10.5402/2012/613642.

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Stirling cycle and Rankine cycle heat engines are used to transform the heat energy of solar concentrators to mechanical and electrical energy. The Rankine cycle is used for large-scale solar power plants. The Stirling cycle can be used for small-scale solar power plants. The Stirling cycle heat engine has many advantages such as high efficiencyand long service life. However, the Stirling cycle is good for high-temperature difference. It demands the use of expensive materials. Its efficiency depends on the efficiency of the heat regenerator. The design and manufacture of a heat regenerator are

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23

Setiyawan, A., A. Novianto, N. B. A. Afkar, F. Chabib, F. R. Amelia, and I. Pratiwi. "Diesel engine performance test using solar-dex and biodiesel (B30) on power and torque." IOP Conference Series: Earth and Environmental Science 969, no. 1 (January 1, 2022): 012034. http://dx.doi.org/10.1088/1755-1315/969/1/012034.

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Abstract Biodiesel as renewable alternative energy produced from vegetable and animal oils can be used to fuel diesel engines. Pertamina has officially release Biodiesel B30, which sells on fuel stations in Indonesia. The purpose of this study is to investigate the diesel engine performance on Solar-Dex and Biodiesel blend. Testing the performance of a diesel engine by mixing Solar-Dex and Biodiesel on power and torque produces different data and can be concluded: (1) Pure Solar-Dex without the addition of Biodiesel gives the lowest power yield of 49.55 kW, while the data fluctuates when addin

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24

Hoegel, Benedikt, Dirk Pons, Michael Gschwendtner, Alan Tucker, and Mathieu Sellier. "Thermodynamic peculiarities of alpha-type Stirling engines for low-temperature difference power generation: Optimisation of operating parameters and heat exchangers using a third-order model." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 11 (November 20, 2013): 1936–47. http://dx.doi.org/10.1177/0954406213512120.

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Low-temperature heat sources such as waste heat and geothermal energy in the range from 100 ℃ to 200 ℃ are widely available and their potential is largely untapped. Stirling engines are one possibility to convert this heat to a usable power output. Much work has been done to optimise Stirling engines for high-temperature heat sources such as external combustion or concentrated solar energy but only little is known about suitable engine layouts at lower temperature differences. With the reduced temperature difference, changes become necessary not only in the heat exchangers and the regenerator

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25

Syarifudin, Syarifudin, and Syaiful Syaiful. "PENGARUH PENGGUNAAN ENERGI TERBARUKAN BUTANOL TERHADAP PENURUNAN EMISI JELAGA MESIN DIESEL INJEKSI LANGSUNG BERBAHAN BAKAR BIODIESEL CAMPURAN SOLAR DAN JATROPA." Infotekmesin 10, no. 1 (January 30, 2019): 18–22. http://dx.doi.org/10.35970/infotekmesin.v10i1.20.

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Diesel engines are widely used as driving forces in vehicles and industry due to fuel efficiency and high output power. The wide use of diesel engines triggers an increase in fuel consumption and exhaust emissions that are harmful to health. Jatropha is a renewable fuel as a solution to increase fuel consumption. However, the high viscosity and low calorific value result in reduced performance and increased exhaust emissions. Butanol has a high oxygen content and cetane number and low viscosity compared to diesel and jatropha. Addition of butanol is possible to reduce the decrease in performan

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26

Asnaghi, A., S. M. Ladjevardi, P. Saleh Izadkhast, and A. H. Kashani. "Thermodynamics Performance Analysis of Solar Stirling Engines." ISRN Renewable Energy 2012 (July 5, 2012): 1–14. http://dx.doi.org/10.5402/2012/321923.

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This paper provides numerical simulation and thermodynamic analysis of SOLO 161 Solar Stirling engine. Some imperfect working conditions, pistons' dead volumes, and work losses are considered in the simulation process. Considering an imperfect regeneration, an isothermal model is developed to calculate heat transfer. Hot and cold pistons dead volumes are accounted in the work diagram calculations. Regenerator effectiveness, heater and cooler temperatures, working gas, phase difference, average engine pressure, and dead volumes are considered as effective parameters. By variations in the effect

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Chen, Lingen, Fengrui Sun, and Chih Wu. "Optimum collector temperature for solar heat engines." International Journal of Ambient Energy 17, no. 2 (April 1996): 73–78. http://dx.doi.org/10.1080/01430750.1996.9675221.

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Rugescu, Radu D., Alina Bogoi, and Radu Cirligeanu. "Intricacy of the Transit Manifold Concept Paid-off by Computational Accuracy." Applied Mechanics and Materials 325-326 (June 2013): 142–47. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.142.

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Despite its intricacy the numerical method applied within the TRANSIT code proved successful in describing discontinuous, non-isentropic flows in rocket engines and solar-gravitational towers for green energy. A number of 0-D approaches are known to render some results in demonstrating the feasibility of the solar tower concept, or in unsteady simulation of transient phases in rocket engines. Computational efficiency is demonstrated by CFD simulation of the starting transients in ADDA solid rocket engines and in the SEATTLER solar mirror tower. The code is exclusively directed to unsteady flow

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Wen, Junming. "Frontier Solar Stirling Engines: Technical Optimization and Wide Application." Highlights in Science, Engineering and Technology 88 (March 29, 2024): 865–72. http://dx.doi.org/10.54097/aqsy2h65.

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As an external gas turbine, the solar Stirling engine uses an external heat source to expand the gas in the inner cylinder to generate power. It can effectively transform solar energy into various kinds of energy and has a broad range of application prospects in the field of sustainable energy since its theoretical foundation is the Stirling cycle, which has the same thermodynamic efficiency as the Carnot cycle. This article elucidates the fundamental principles underlying the Stirling engine, provides an exposition on its three basic types, delves into potential constituent elements, explores

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Ramachandran, Siddharth, Naveen Kumar, and Venkata Timmaraju Mallina. "A Comprehensive Perspective of Waste Heat Recovery Potential from Solar Stirling Engines." E3S Web of Conferences 313 (2021): 06001. http://dx.doi.org/10.1051/e3sconf/202131306001.

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Despite the higher efficiency advantage, the cost reduction of PV technology has been more successful compared to the dish Stirling engine (DSE) due to the large market volume and sturdy competition. Irrespective of the types of source, there exists a potential of waste heat recovery from Stirling engines operating at higher temperature regime. Accordingly, to make DSE commercially viable and efficient, innovative ways such as hybridization (combing a bottoming cycle), Co-generation, Tri-generation etc. need to be explored. In this paper, the techno-economic feasibility of hybridization of a t

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Kongtragool, Bancha, and Somchai Wongwises. "A review of solar-powered Stirling engines and low temperature differential Stirling engines." Renewable and Sustainable Energy Reviews 7, no. 2 (April 2003): 131–54. http://dx.doi.org/10.1016/s1364-0321(02)00053-9.

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Липко, Юрий, Yuriy Lipko, Александр Пашинин, Aleksandr Pashinin, Равиль Рахматулин, Ravil Rakhmatulin, Виталий Хахинов, and Vitaliy Khakhinov. "Geomagnetic effects caused by rocket exhaust jets." Solar-Terrestrial Physics 2, no. 3 (October 27, 2016): 43–55. http://dx.doi.org/10.12737/22284.

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In the space experiment Radar–Progress, we have made 33 series of measurements of geomagnetic variations during ignitions of engines of Progress cargo spacecraft in low Earth orbit. We used magneto-measuring complexes, installed at observatories of the Institute of Solar-Terrestrial Physics of Siberian Branch of the Russian Academy of Sciences, and magnetotelluric equipment of a mobile complex. We assumed that engine running can cause geomagnetic disturbances in field tubes crossed by the spacecraft. When analyzing experimental data, we took into account the following space weather factors: so

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Yusuf, Bakharuddin, Seno Darmanto, Sri Utami Handayani, and Susastro Susastro. "KAJIAN EKSPERIMEN PENGGUNAAN SOLAR CELL SEBAGAI ALTERNATIF PENGISIAN AKUMULATOR 200Ah 12 Volt MESIN DIESEL PLTD." Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi 8, no. 2 (November 12, 2022): 284. http://dx.doi.org/10.35308/jmkn.v8i2.6413.

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PLTD (Diesel Engine Power Plant) is one generator used by several companies, especially electricity providers. It’s just that PLTD requires a large enough cost to produce electrical energy. Therefore it is necessary to make efforts to reduce operational costs, one of which is by making an alternative to charging the accumulator on the diesel engine. The alternatif is a prototype solar cell that can charge the 200 Ah 12 Volt accumulator so that the accumulator can be used for the starting process diesel engine (PLTD). So, at this writing the author tries to make an experimental study of the use

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Lezhneva, Elena, and Katerina Vakulenko. "Combined noise shield with integrated solar panels." Bulletin of Kharkov National Automobile and Highway University, no. 93 (May 27, 2021): 47–53. http://dx.doi.org/10.30977/bul.2219-5548.2021.93.0.47.

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The article is devoted to the assessment of the noise load of road transport on the environment of large cities. Goal. The goal is to develop engineering structures to neutralize harmful substances from internal combustion engines, display and absorb sound waves, ensure road safety and improve energy efficiency. Methodology. The experience of European countries on the use of noise protection screens with integrated solar batteries is presented. The types and design features of solar panels are presented. Results. A model of a combined noise protection barrier with integrated solar batteries is

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Kropiwnicki, Jacek, and Mariusz Furmanek. "Application of Stirling engine for recovery energy from exhaust gas." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 19, no. 9 (September 30, 2018): 89–92. http://dx.doi.org/10.24136/atest.2018.290.

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Stirling engine is device generating mechanical energy without combustion fuel inside cylinder. This fact allows to supply engine from any power source. Example of such energy source can be solar radiation, combustion low-calorie carbon in outside combustion chamber or waste heat from other device like combustion engine mounted in bus or lorry. Use that kind of device in car allows to reduce fuel consumption through increase of efficiency of utilization thermal energy produced in combustion engine. The paper presents commercial solution of Stirling engines powered by waste energy and project o

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Boretti, Alberto. "α-Stirling hydrogen engines for concentrated solar power". International Journal of Hydrogen Energy 46, № 29 (квітень 2021): 16241–47. http://dx.doi.org/10.1016/j.ijhydene.2021.02.036.

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Sahin, Ahmet Z. "Optimum operating conditions of solar driven heat engines." Energy Conversion and Management 41, no. 13 (September 2000): 1335–43. http://dx.doi.org/10.1016/s0196-8904(99)00192-2.

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Göktun, Selahatti̇n. "On optimized solar-pond-driven irreversible heat engines." Renewable Energy 7, no. 1 (January 1996): 67–69. http://dx.doi.org/10.1016/0960-1481(95)00112-3.

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Ranieri, Salvatore, Gilberto Prado, and Brendan MacDonald. "Efficiency Reduction in Stirling Engines Resulting from Sinusoidal Motion." Energies 11, no. 11 (October 24, 2018): 2887. http://dx.doi.org/10.3390/en11112887.

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Stirling engines have a high potential to produce renewable energy due to their ability to use a wide range of sustainable heat sources, such as concentrated solar thermal power and biomass, and also due to their high theoretical efficiencies. They have not yet achieved widespread use and commercial Stirling engines have had reduced efficiencies compared to their ideal values. In this work we show that a substantial amount of the reduction in efficiency is due to the operation of Stirling engines using sinusoidal motion and quantify this reduction. A discrete model was developed to perform an

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Aidi Sharif, Montassar, Kaesar Sabah Khalaf, and Musa Anwar Omer. "A Simulation Model of a System-based Concentrated Solar Power System (CSP) for Maximum Solar Energy Harvesting Applications." NTU Journal of Renewable Energy 4, no. 1 (February 10, 2023): 26–35. http://dx.doi.org/10.56286/ntujre.v4i1.410.

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Solar energy has piqued people's curiosity since the dawn of civilization, and the technology for harvesting it has advanced at a rapid pace. The development of technology to increase the efficiency of the solar system is of critical relevance due to the energy difficulties that civilization has been facing. Scientists have used the solar concentrated system for several years since it allows for the concentration of solar energy into a concentrate, allowing for a significant increase in energy efficiency. A parabolic dish setup is described in this article as a dish-shaped concentrating collec

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Saksono, Puji, and Pandu Prastiyo Utomo. "ANALISIS PENGARUH PEMBEBANAN ENGINE TERHADAP EMISI GAS BUANG DAN FUEL CONSUMPTION MENGGUNAKAN BAHAN BAKAR SOLAR DAN BIODIESEL B10 PADA ENGINE CUMMINS QSK 45 C." POROS 15, no. 2 (January 6, 2018): 136. http://dx.doi.org/10.24912/poros.v15i2.1276.

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Abstract: The fuels for Diesel engines derived from petroleum of its existence the longer depleting. Starting from this, the use of biodiesel as a successor is an alternative solution. Conversion of diesel fuel for Diesel engines of heavy equipment to the other types, one of them should pay attention to emissions- related environmental pollution and fuel consumption. This research was conducted with the aim to find out the influence of loading engine against exhaust emissions and fuel consumption using diesel fuel and biodiesel B10 on engine Cummins QSK 45 c. Testing performed in the PT. Sapta

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KIM, YOUNG MIN, DONG GIL SHIN, SANG TAE LEE, and DANIEL FAVRAT. "THERMODYNAMIC ANALYSIS OF A CLOSED BRAYTON/ERICSSON CYCLE ENGINE WITH SCROLL MACHINES." International Journal of Air-Conditioning and Refrigeration 18, no. 04 (December 2010): 279–87. http://dx.doi.org/10.1142/s2010132510000277.

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Stirling and Ericsson engines have great potential for many applications, including micro-cogeneration, solar power, and biomass. However, ideal cycles of both types of engines are difficult to achieve in practice because neither isothermal compression nor isothermal expansion is practical with reciprocating piston engines or with turbomachinery. On the other hand, scroll compressor and expander can be very suitable for effective cooling and heating because of the high area-to-volume ratio of scroll geometry or the application of two-phase flow. To achieve quasi-isothermal compression, either

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Kristyadi, Tarsisius, Diki Ismail Permana, Muhammad Pramuda Nugraha Sirodz, Encu Saefudin, and Istvan Farkas. "Performance and Emission of Diesel Engine Fuelled by Commercial Bio-Diesel Fuels in Indonesia." Acta Technologica Agriculturae 25, no. 4 (November 1, 2022): 221–28. http://dx.doi.org/10.2478/ata-2022-0032.

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Abstract The performance and emission of a small diesel engine fuelled by commercial diesel fuel in Indonesia are present in this paper. Various commercial diesel fuels in Indonesia are produced and marketed by Pertamina. As the largest oil company in Indonesia, Pertamina has developed various diesel fuels, namely Solar, Biosolar (B30), Dexlite, and Pertadex. This study explains in more detail the performance, fuel consumption, and emission produced by the four types of fuels, and they were investigated experimentally using a single-cylinder diesel engine at various engine speeds, from 1,000 r

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Липко, Юрий, Yuriy Lipko, Александр Пашинин, Aleksandr Pashinin, Равиль Рахматулин, Ravil Rakhmatulin, Виталий Хахинов, and Vitaliy Khakhinov. "Geomagnetic effects caused by rocket exhaust jets." Solnechno-Zemnaya Fizika 2, no. 3 (September 17, 2016): 33–40. http://dx.doi.org/10.12737/19634.

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In the space experiment Radar–Progress, we have made 33 series of measurements of geomagnetic variations during ignitions of engines of Progress cargo spacecraft in low Earth orbit. We used magneto-measuring complexes, installed at observatories of the Institute of Solar-Terrestrial Physics of Siberian Branch of the Russian Academy of Sciences, and magnetotelluric equipment of a mobile complex. We assumed that engine running can cause geomagnetic disturbances in flux tubes crossed by the spacecraft. When analyzing experimental data, we took into account space weather factors: solar wind parame

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Haider, Syed Mustafa, Shafqat Hussain, Hassan Farid, Usman Shahid, Awais Ahmed, and Nazar Abbas. "Experimental Investigations on the Effects of HHO Gas Fuel Additive on Performance of a Gasoline Engine." Pakistan Journal of Engineering and Technology 4, no. 4 (December 23, 2021): 73–78. http://dx.doi.org/10.51846/vol4iss4pp73-78.

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The hydrogen hydroxyl (HHO) gas as a fuel additive in gasoline for SI engines has a positive impact on improving the performance and reducing the consequences of the burning of fossil fuels alone which are continuously depleting and causing severe problems to the environment. In this paper, the effect of injecting HHO gas additive in the gasoline fuel of a petrol engine was experimentally explored in detail to improve the overall efficiency in terms of performance indicators such as engine fuel consumption, brake horsepower and engine’s torque developed. The engine was coupled with an electric

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Chouder, Ryma, Pascal Stouffs, and Azzedine Benabdesselam. "A variant of the Fluidyne: the liquid piston ERICSSON engine." E3S Web of Conferences 313 (2021): 04001. http://dx.doi.org/10.1051/e3sconf/202131304001.

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A special configuration of Stirling liquid piston engine, known as Fluidyne, was invented fifty years ago and many works have been devoted to it since then. A variant of the Fluidyne is presented, in which the two ends of the U-tube containing the liquid piston are closed by valves, so that the system obtained belongs to the family of Ericsson engines rather than to the family of Stirling engines. This type of low-tech system is considered to be suitable for the production of low-power mechanical energy (up to 1… kW), for example for pumping or to drive an electric generator from renewable pri

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Suijs, Ward, and Sebastian Verhelst. "Scaling Performance Parameters of Reciprocating Engines for Sustainable Energy System Optimization Modelling." Energies 16, no. 22 (November 8, 2023): 7497. http://dx.doi.org/10.3390/en16227497.

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The increased share of variable renewable energy sources such as wind and solar power poses constraints on the stability of the grid and the security of supply due to the imbalance between electricity production and demand. Chemical storage or power-to-X technologies can provide the flexibility that is needed to overcome this issue. To quantify the needs of such storage systems, energy system optimization models (ESOMs) are used, guiding policy makers in nationwide energy planning. The key input parameters for such models are the capacity and efficiency values of the conversion devices. Gas tu

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Aini, Zulfatri, Kunaifi, Alex Wenda, Ewi Ismaredah, and Wahyu Anjarjati. "Solar Irrigation System in Indonesia: Practical Assessment and Evaluation for Converting Fossil Fuels with Solar Energy." IOP Conference Series: Earth and Environmental Science 927, no. 1 (December 1, 2021): 012022. http://dx.doi.org/10.1088/1755-1315/927/1/012022.

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Abstract This study proposes a sustainable solar-powered irrigation system (SPIS) for a 75-hectares rice farm in Krandegan Village, Purworejo Regency, Indonesia. The existing water pumping system uses diesel engines which cost around Rp. 200 million per year that cannot be provided by the farmers. The SPIS was designed based on water requirements calculated according to the Food and Agriculture Organization (FAO). The technical design of SPIS used Lorentz Compass considering local solar energy sources and the availability of SPIS components in the local markets. The entire farm in Krandegan re

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Iskendar, Abdul Muis, Waluyo, Kunto Ismoyo, Farid Arif Binaruno, Mulyadi Agus Widodo, Dimas Aldyanto Wibowo, et al. "Comparative Analysis of Conventional and Electric Motor Propulsion Systems for “Sandek” Fishing Boats in West Sulawesi from a Sustainable Economical Aspect." E3S Web of Conferences 484 (2024): 03002. http://dx.doi.org/10.1051/e3sconf/202448403002.

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Indonesia as a tropical country has abundant potential of solar energy. The Indonesian government is very serious about implementing efforts towards net zero emissions which are continuously encouraged. Using solar energy is one of the solutions to reduce greenhouse gas emissions use of fossil fuels. One of the efforts made is to apply technology to replace the propulsion system of ships powered by fossil fuel engines to electricity from solar energy. This research takes the case of a conventional engine-powered “Sandek” fishing boat converted to a solar-powered electric motor in West Sulawesi

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Lukatela, Tom. "Renewables, gas and batteries: reliable and efficient power for industry." APPEA Journal 59, no. 2 (2019): 635. http://dx.doi.org/10.1071/aj18069.

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Woodside believes gas-fired power and renewables are ideal partners to power industry. There are environmental and commercial reasons to integrate solar photovoltaic panels, or other intermittent renewable generation, with gas-fired power generation to support industry, especially in the Pilbara where sunlight is plentiful. This would increase energy efficiency, and reduce emissions, enabling a transformative shift towards a lower carbon future without compromising reliability or affordability. Woodside is studying a concept to integrate an industrial-scale solar farm, a battery energy storage

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