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Journal articles on the topic 'Low temperature heat engine'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Kim, Yeongmin, Muhammad Uzair Mehmood, Hyun Joo Han, Yu Jin Kim, Seung Jin Oh, and Sang-Hoon Lim. "Reclaiming Power Potential from Low Temperature Waste Heat by Thermomagnetic Heat Engines." Energies 15, no. 8 (2022): 2817. http://dx.doi.org/10.3390/en15082817.

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Thermomagnetic heat engines were designed, constructed, and tested, where numbers of gadolinium (Gd) blocks were used to exploit low temperature waste heat. Gadolinium is a rare earth material whose magnetic property changes with temperature, altering between ferromagnetic and paramagnetic. A motion develops in the thermomagnetic heat engine as Gd blocks are exposed to different temperatures causing changes in their magnetic property. A change in the magnetic property of any Gd block is directly related to the resultant torque driving the thermomagnetic heat engine for power production. Among

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2

Hasanovich, Linda, and David Nobes. "Investigation of effect of heat exchanger size on power output in low-temperature difference Stirling engines." E3S Web of Conferences 313 (2021): 03002. http://dx.doi.org/10.1051/e3sconf/202131303002.

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The Stirling engine is capable of converting any source of thermal energy into kinetic energy, which makes it an attractive option for utilizing low-temperature sources such as geothermal or waste heat below 100 °C. However, at these low temperatures, the effects of losses are proportionally higher due to the lower thermal potential available. One such significant loss is excess dead volume, wherein a significant contributor is the heat exchangers. The heat exchangers must be selected to optimize power output by minimizing the dead volume loss while maximizing the heat transfer to and from the

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3

Enomoto, Takeshi, Atsushi Matsuguchi, and Noboru Kagawa. "A Study of Mesh Sheets of 3-kW Stirling Engine." E3S Web of Conferences 313 (2021): 05001. http://dx.doi.org/10.1051/e3sconf/202131305001.

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In recent years, the interest in low-pollution and high-efficiency heat engines has been increasing due to the growing awareness of environmental protection, and power generation at relatively low temperatures, such as use of exhaust heat and sunlight, has been attracting attention. Compared with other heat engines, Stirling engine is very important because it can be driven by any heat source at low temperatures, such as exhaust heat, and it does not emit exhaust gas. In order to realize a more efficient Stirling engine, it is essential to design a heat exchange system that is suitable for eac

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4

Goudarzi, Koorosh, and Mohammad Reza Zare. "Improving the Engine Efficiency Using a New Combined Refrigeration Cycle for Low-Temperature Heat Source (Waste Heat Recovery)." Journal of Energy and Power Technology 4, no. 2 (2022): 1. http://dx.doi.org/10.21926/jept.2202020.

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Passenger and commercial internal combustion engines have relatively large dissipated thermal energy sources that can be used for initiating thermodynamic refrigeration cycles at low temperatures while improving engine efficiency. Researchers have focused on combined power-refrigeration cycles in past studies. This paper presents the operation and performance of a new combined refrigeration system driven by waste heat recovery within the internal combustion engines. For this purpose, the effects of several parameters on the performance of the cycle are examined. Results show that an increase i

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5

Chen, Lingen, Shengbing Zhou, Fengrui Sun, and Chih Wu. "Optimal Configuration and Performance of Heat Engines with Heat Leak and Finite Heat Capacity." Open Systems & Information Dynamics 09, no. 01 (2002): 85–96. http://dx.doi.org/10.1023/a:1014235029474.

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The optimal configuration of a class of two-heat-reservoir heat engine cycles in which the maximum work output can be obtained under a given cycle time is determined with the considerations of heat leak, finite heat capacity high-temperature source and infinite heat capacity low-temperature heat sink. The heat engine cycles considered in this paper include: (1) infinite low- and high-temperature reservoirs without heat leak, (2) infinite low- and high-temperature reservoirs with heat leak, (3) finite high-temperature source and infinite low-temperature sink without heat leak, and (4) finite hi

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6

Rokhmawati, Endang Dian, Irna Farikhah, Ummi Kaltsum, et al. "Numerical Study on the Effect of Mean Pressure and Loop's Radius to the Onset Temperature and Efficiency of Traveling Wave Termoacustic Engine." Automotive Experiences 3, no. 3 (2020): 96–103. http://dx.doi.org/10.31603/ae.v3i3.3881.

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The thermoacoustic engine can be a device to convert waste heat energy in the engine car become useful energy such as for charging battery in car or Air conditioner of the car. This work can be done by experimentally and numerically. There are some parameters that have an impact on the performance of the engine. They are geometry of the engines, working fluid, and mean pressure. The performance of the engine depends on the efficiency and the heating temperature. In the car, waste heat energy is not high enough. Therefore, we need to utilize the low heating temperature to be converted into usef

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7

Hu, Jianjun, Zijia Wu, and Changchun Li. "Research on Energy Management Strategy of Range Extender Electric Vehicle considering Temperature Effect under Different Heat Demands." International Journal of Energy Research 2023 (February 6, 2023): 1–15. http://dx.doi.org/10.1155/2023/9903856.

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In order to further improve the energy utilization of the range extender electric vehicle (REEV), the energy management strategy of the REEV under different heat demands and operating temperatures is studied. Firstly, for reducing the extra fuel consumption caused by engine operating temperature, the influence of engine lubricating oil temperature on the equivalence factor is analyzed, and a novel method is proposed, which can determine the equivalence factor by three parameters, including engine temperature, operating condition type, and battery state of charge (SOC). Secondly, to reduce the

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8

Likos, W. E., and T. W. Ryan. "Experiments With Coal Fuels in a High-Temperature Diesel Engine." Journal of Engineering for Gas Turbines and Power 110, no. 3 (1988): 444–52. http://dx.doi.org/10.1115/1.3240141.

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The combustion of 50 wt percent coal slurries, using water, diesel fuel, and methanol as carrier liquids, was investigated in a single-cylinder research engine. High temperatures were achieved in the engine cylinder using low-heat-rejection engine technology, electrically heated glow plugs, and heated inlet air. Comparisons of the fuels and different methods of providing high cylinder temperature were made using cylinder pressure data and heat release calculations. Autoignition of the coal/water slurries was attained using auxiliary heat input. The burning rates of all the autoignited slurries

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9

Hu, Lei, Yangfan Chen, and Qiang Luo. "Simulation and verification of cylinder head’s temperature field for marine low-speed engine." Journal of Physics: Conference Series 2791, no. 1 (2024): 012023. http://dx.doi.org/10.1088/1742-6596/2791/1/012023.

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Abstract The high load capacity of marine low-speed engines poses a challenge to the thermal load of the cylinder head and temperature field simulation can guide its structural design and optimization. The 3-dimensional models of the fluid domain for the cooling water and the solid domain for the cylinder head are established and meshed, the fluid domain model is simulated to research the heat transfer pattern by Fluent software, and the surface temperature and heat transfer coefficient of the cooling water is calculated. The thermal boundary conditions of the gas in the cylinder are simulated

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10

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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11

Nicol-Seto, Michael, and David Nobes. "Experimental evaluation of piston motion modification to improve the thermodynamic power output of a low temperature gamma Stirling engine." E3S Web of Conferences 313 (2021): 04002. http://dx.doi.org/10.1051/e3sconf/202131304002.

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Stirling engines are a variety of heat engines which are capable of using heat from various sources including low temperature renewables. This work examines performance of a lab scale low temperature gamma type Stirling engine with a drive train modified with oval elliptical gears. The gears were added to dwell the engine piston motion to attempt to improve the thermodynamic performance of the engine by better replicating the ideal Stirling cycle. A variety of dwelling piston configurations were tested on both the displacer and power piston. It was observed that that the piston dwelling had th

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12

Chérel, Jérôme, Jean-Marc Zaccardi, Bernard Bouteiller, and Alain Allimant. "Experimental assessment of new insulation coatings for lean burn spark-ignited engines." Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 75 (2020): 11. http://dx.doi.org/10.2516/ogst/2020006.

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Clean and highly efficient internal combustion engines will still be necessary in the future to meet the ambitious CO2 emissions reduction targets set for light-duty vehicles. The maximal efficiency of stoichiometric Spark-Ignited (SI) gasoline engines has been steadily increasing in recent years but remains limited by the important relative share of cooling losses. Low heat rejection engines using ceramic barrier coatings have been presented in the past but smart insulation coatings are gaining a renewed interest as a more promising way to further increase the engine maximal thermal efficienc

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13

HONDA, Shogo, and Akira HOSHI. "Prototype Stirling Engine using Low Temperature Heat Source." Proceedings of the Tecnology and Society Conference 2022 (2022): 323. http://dx.doi.org/10.1299/jsmetsd.2022.323.

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14

Kawaguchi, Akio, Yoshifumi Wakisaka, Naoki Nishikawa, et al. "Thermo-swing insulation to reduce heat loss from the combustion chamber wall of a diesel engine." International Journal of Engine Research 20, no. 7 (2019): 805–16. http://dx.doi.org/10.1177/1468087419852013.

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Cooling heat loss is one of the most dominant losses among the various engine losses to be reduced. Although many attempts to reduce it by insulating the combustion chamber wall have been carried out, most of them have not been successful. Charge air heating by the constantly high temperature insulating wall is a significant issue, because it deteriorates charging efficiency, increases the emissions of soot and NOx in diesel engines, and promotes the knock occurrence tendency in gasoline engines. A new concept heat insulation methodology which can reduce cooling heat loss without heating the c

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15

Kornienko, Victoria, Roman Radchenko, Mykola Radchenko, Andrii Radchenko, Anatoliy Pavlenko, and Dmytro Konovalov. "Cooling Cyclic Air of Marine Engine with Water-Fuel Emulsion Combustion by Exhaust Heat Recovery Chiller." Energies 15, no. 1 (2021): 248. http://dx.doi.org/10.3390/en15010248.

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The fuel efficiency of marine diesel engine as any combustion engine falls with raising the temperature of air at the suction of its turbocharger. Therefore, cooling the engine turbocharger intake air by recovering exhaust gas heat to refrigeration capacity is a very perspective trend in enhancing the fuel efficiency of marine diesel engines. The application of water-fuel emulsion (WFE) combustion enables the reduction of a low-temperature corrosion, and, as a result, provides deeper exhaust gas heat utilization in the exhaust gas boiler (EGB) to the much lower temperature of 90–110 °C during

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16

Reddy, Ch Kesava, M. V. S. Murali Krishna, P. V. K. Murthy, and T. Ratna Reddy. "Performance Evaluation of a Low-Grade Low-Heat-Rejection Diesel Engine with Crude Pongamia oil." ISRN Renewable Energy 2012 (March 15, 2012): 1–10. http://dx.doi.org/10.5402/2012/489605.

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Investigations are carried out to evaluate the performance of a low heat rejection (LHR) diesel engine with ceramic coated cylinder head [ceramic coating of thickness 500 microns is done on inside portion of cylinder head] with different operating conditions [normal temperature and pre-heated temperature] of crude Pongamia oil (CPO) with varied injection pressure and injection timing. Performance parameters and pollution levels are determined at various magnitudes of brake mean effective pressure. Combustion characteristics at peak load operation of the engine are measured with special pressur

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17

Petkovic, Snezana, Radivoje Pesic, and Jovanka Lukic. "Heat transfer in exhaust system of a cold start engine at low environmental temperature." Thermal Science 14, suppl. (2010): 209–20. http://dx.doi.org/10.2298/tsci100505070p.

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During the engine cold start, there is a significantly increased emission of harmful engine exhaust gases, particularly at very low environmental temperatures. Therefore, reducing of emission during that period is of great importance for the reduction of entire engine emission. This study was conducted to test the activating speed of the catalyst at low environmental temperatures. The research was conducted by use of mathematical model and developed computer programme for calculation of non-stationary heat transfer in engine exhaust system. During the research, some of constructional parameter

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18

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 (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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19

Granovskiy, Mikhail. "An Adsorption-Desorption Heat Engine for Power Generation from Waste Heat." Journal of Energy and Power Technology 05, no. 04 (2023): 1–16. http://dx.doi.org/10.21926/jept.2304034.

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According to the United States Department of Energy, waste heat recovery would allow up to a 20% reduction in greenhouse gases (GHG) emission. Most of the waste energy is discharged as a low-grade heat at temperatures less than 250°C. Therefore, the development of new technologies and the enhancement of existing ones to convert low-grade heat into electrical or mechanical energy are of great importance. The working principle of adsorption-desorption heat pumps with cyclic switching between adsorption and desorption is adapted in the proposed heat engine to generate electrical power from low-te

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20

Treacy, Mark, Leilei Xu, Hesameddin Fatehi, Ossi Kaario, and Xue-Song Bai. "Performance of a Methanol-Fueled Direct-Injection Compression-Ignition Heavy-Duty Engine under Low-Temperature Combustion Conditions." Energies 17, no. 17 (2024): 4307. http://dx.doi.org/10.3390/en17174307.

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Low-temperature combustion (LTC) concepts, such as homogeneous charge compression ignition (HCCI) and partially premixed combustion (PPC), aim to reduce in-cylinder temperatures in internal combustion engines, thereby lowering emissions of nitrogen oxides (NOx) and soot. These LTC concepts are particularly attractive for decarbonizing conventional diesel engines using renewable fuels such as methanol. This paper uses numerical simulations and a finite-rate chemistry model to investigate the combustion and emission processes in LTC engines operating with pure methanol. The aim is to gain a deep

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21

Radchenko, Andrii, Dariusz Mikielewicz, Mykola Radchenko, Serhiy Forduy, Oleksandr Rizun, and Viktor Khaldobin. "Innovative combined in-cycle trigeneration technologies for food industries." E3S Web of Conferences 323 (2021): 00029. http://dx.doi.org/10.1051/e3sconf/202132300029.

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The majority of integrated energy systems (IES) for combined electricity, heat and refrigeration generation, or trigeneration, are based on gas engines. The fuel efficiency of gas engines are strictly influenced by intake air temperatures. Practically in all IES the absorption lithium-bromide chillers (ACh) are applied for conversing the heat removed from the engine into refrigeration in the form of chilled water. The peculiarity of trigeneration in food industries is the use of chilled water of about 12°C for technological needs instead of 7°C as typical for ACh. This leads to a considerable

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22

PROF., GOPAL REDDY K. "PRODUCTION OF ELECTRICITY BY SOLAR STIRLING ENGINE." IJIERT - International Journal of Innovations in Engineering Research and Technology 4, no. 7 (2017): 12–15. https://doi.org/10.5281/zenodo.1459092.

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<strong>The Stirling engine is both practically and theoretically a significant device,its practical virtue is simple,reliable and safe. The engine operates on a closed thermodynamic cycle,which is reversible. Today Stirling cycle - based systems are in commercial use as a heat pump,cryogenic refrigeration and air liquefaction. As a prime mover,Stirling cycles remain the subject of research and development efforts. A number of attempts have been made to build and improve the performance of Stirling engines. For successful operation of engine system with good efficiency,a careful design of heat

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Mekhtiyev, A. D., V. V. Yugay, A. D. Alkina, Y. G. Neshina, and D. E. Kapanova. "Studying a low-temperature engine with external heat supply." Journal of Physics: Conference Series 1843, no. 1 (2021): 012006. http://dx.doi.org/10.1088/1742-6596/1843/1/012006.

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Kaiser, Sascha, Markus Nickl, Christina Salpingidou, Zinon Vlahostergios, Stefan Donnerhack, and Hermann Klingels. "Investigations of the synergy of Composite Cycle and intercooled recuperation." Aeronautical Journal 122, no. 1252 (2018): 869–88. http://dx.doi.org/10.1017/aer.2018.46.

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ABSTRACTThe synergistic combination of two promising engine architectures for future aero engines is presented. The first is the Composite Cycle Engine, which introduces a piston system in the high pressure part of the core engine, to utilise closed volume combustion and high temperature capability due to instationary operation. The second is the Intercooled Recuperated engine that employs recuperators to utilise waste heat from the core engine exhaust and intercooler to improve temperature levels for recuperation and to reduce compression work. Combinations of both architectures are presented

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Kaiser, Sascha, Markus Nickl, Christina Salpingidou, Zinon Vlahostergios, Stefan Donnerhack, and Hermann Klingels. "Investigations of the synergy of Composite Cycle and intercooled recuperation." Aeronautical Journal 122, no. 1252 (2018): 869–88. https://doi.org/10.5281/zenodo.1489114.

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The synergistic combination of two promising engine architectures for future aero engines is presented. The first is the Composite Cycle Engine, which introduces a piston system in the high pressure part of the core engine, to utilize closed volume combustion and high temperature capability due to instationary operation. The second is the Intercooled Recuperated engine that employs recuperators to utilize waste heat from the core engine exhaust, and intercooler to improve temperature levels for recuperation and to reduce compression work. Combinations of both architectures are presented and in

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Avinash, Gangadhar Virale, and Tukaram Nitnaware Pravin. "EXPERIMENTAL ANALYSIS OF JACKET COOLING OF S I ENGINE AND STUDY OF OPERATING PARAMETERS AND EMISSIONS." International Journal of Advances in Engineering & Technology 10, no. 1 (2020): 113–21. https://doi.org/10.5281/zenodo.3958630.

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<em>About 17-26% of input energy to the spark ignition engine is lost as heat energy though the engine. This heat energy is removed by means of jacket cooling water. The temperature of the engine is required to be maintained within an optimum range for proper operation of the engine. Very high temperature of the engine leads to increase in the emissions and friction power (losses). Low engine temperature leads to improper vaporization of the fuel and thus starting problems. So the engine temperature needs to be maintained at an optimum value. The effects on various operating parameters and emi

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Murti, Prastowo, Ikhsan Setiawan, Jihan Zeinyuta Rosafira, Adhika Widyaparaga, Wijayanti Dwi Astuti, and Tetsushi Biwa. "Analysis of a standing wave thermoacoustic engine with multiple unit stages." International Journal of Renewable Energy Development 13, no. 4 (2024): 708–15. http://dx.doi.org/10.61435/ijred.2024.60098.

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The thermoacoustic engine is an eco-friendly technology capable of harnessing solar and waste energy for electricity generation, in conjunction with a linear alternator, and can function as a heat pump. This engine type holds significant appeal due to its simplistic design, devoid of any mechanical moving components, comprising only a stack sandwiched between heat exchangers within a resonator. When the temperature gradient across the stack reaches the critical threshold (onset temperature), the working gas undergoes spontaneous oscillation. Typically, a high onset temperature is necessary to

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Radchenko, Andrii, Mykola Radchenko, Andrii Konovalov, and Anatolii Zubarev. "Increasing electrical power output and fuel efficiency of gas engines in integrated energy system by absorption chiller scavenge air cooling on the base of monitoring data treatment." E3S Web of Conferences 70 (2018): 03011. http://dx.doi.org/10.1051/e3sconf/20187003011.

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An advanced scavenge air cooling system for reciprocating gas engines of integrated energy system for combined electricity, heat and refrigeration generation has been developed. New method of deep scavenge air cooling and stabilizing its temperature at increased ambient air temperatures and three-circuit scavenge air cooling system with absorption lithium-bromide chiller and wet-type cooling tower was proposed. Such cooling method does not require essential constructive changes in the existing scavenge air cooling system but only an addition heat exchanger for chilling scavenge air cooling wat

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Liu, Yang, Yituan He, Cuijie Han, and Chenheng Yuan. "Combustion and energy distribution of hydrogen-enriched compressed natural gas engines with low heat rejection based on Atkinson cycle." Advances in Mechanical Engineering 11, no. 1 (2019): 168781401881958. http://dx.doi.org/10.1177/1687814018819580.

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In order to reduce the heat loss and improve the indicated thermal efficiency of hydrogen-enriched compressed natural gas engines, this article presents a combination of Atkinson cycle with high compression ratio and low heat rejection on the hydrogen-enriched compressed natural gas prototype engine with 55% hydrogen blend. The combustion characteristics and energy distribution of the prototype and modified engines were investigated by simulation, and the conclusions are as follows: the pressure and temperature of modified engines are higher than those of the prototype during the combustion pr

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Amann, C. A. "Promises and Challenges of the Low-Heat-Rejection Diesel." Journal of Engineering for Gas Turbines and Power 110, no. 3 (1988): 475–81. http://dx.doi.org/10.1115/1.3240145.

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The low-heat-rejection (LHR) diesel promises decreased engine fuel consumption by eliminating the traditional liquid cooling system and converting energy normally lost to the coolant into useful shaft work instead. However, most of the cooling energy thus conserved is transferred into the exhaust stream rather than augmenting crankshaft output directly, so exhaust-energy recovery is necessary to realize the full potential of the LHR engine. The higher combustion temperature of the LHR diesel favors increased emission of NOx, with published results on hydrocarbon and particulate emissions showi

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Elagin, Mikhail Y., and Roman N. Khmelev. "Numerical simulation of the diesel engine starting considering air pre-heating in the intake system." Izvestiya MGTU MAMI 17, no. 3 (2023): 209–16. http://dx.doi.org/10.17816/2074-0530-375320.

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BACKGROUND: Low temperature of the intake air is one of the reasons of difficult starting of a cold diesel engine in conditions of negative outside temperatures. For a reliable staring of a cold diesel engine, it is necessary to have the temperature at the end of the compression stroke higher than the fuel self-ignition temperature. As the temperature at the end of the compression stroke is defined, first, by the temperature at the end of the intake stroke, the mentioned condition can be satisfied with preliminary warming of the air entering in a cylinder. AIMS: The article is devoted to

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Yang, Zongming, Roman Radchenko, Mykola Radchenko, Andrii Radchenko, and Victoria Kornienko. "Cooling Potential of Ship Engine Intake Air Cooling and Its Realization on the Route Line." Sustainability 14, no. 22 (2022): 15058. http://dx.doi.org/10.3390/su142215058.

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A fuel efficiency of a ship engine increases with cooling inlet air. This might be performed by the chillers, which transform the heat of engine exhaust gas and scavenge air for refrigeration. The effect gained due to cooling depends on the intake air temperature drop and the time of engine operation at decreased intake air temperature. Thus, the cooling degree hour (CDH) number, calculated as air temperature depression multiplied by the duration of engine operation at reduced intake air temperature, is used as a primary criterion to estimate the engine fuel efficiency enhancement due to intak

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Nik Kechik Mujahidah Nik Abdul Rahman, Syamimi Saadon, and Mohd Hasrizam Che Man. "Heat Transfer Enhancement of Biomass Based Stirling Engine." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 100, no. 1 (2022): 1–10. http://dx.doi.org/10.37934/arfmts.100.1.110.

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Stirling engine as an external combustion engine with high efficiencies and able to use any types of heat source is the best candidate to recover waste heat of the exhausted gas by converting it into power. Thus, in this study Stirling engine was introduced to evaluate the possibility of recovering waste heat from biomass to produce power. For this reason, Computational Fluid Dynamic (CFD) simulation test was performed to design an initial computational model of Stirling engine for low temperature heat waste recovery. The CFD model was validated with the experiment model and shows 6.11% of ave

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Merzlikin, V. G., A. R. Makarov, S. V. Smirnov, A. V. Kostukov, and Marcos Ojeda Gutierrez. "Low-cost, eco-friendly diesel with a thermally insulated combustion chamber." Traktory i sel hozmashiny 85, no. 5 (2018): 56–68. http://dx.doi.org/10.17816/0321-4443-66419.

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The performance of a diesel engine has been studied using well-known types of ceramic thermal insulating HIC or thermal barrier TBC coatings. This problem is relevant for a diesel engine with low thermal losses of the combustion chamber, in which the intense radiant component (in the near-IR range) reaches ∼ 50 % of the total heat flow. In this paper, the authors continued to study these coatings, but as translucent (SHICs or STBCs) with bulk absorption of penetrating radiant energy. The spectrophotometric modeling of the optical parameters of these coatings made it possible to estimate the ch

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Радченко, Микола Іванович, Дмитро Вікторович Коновалов, Чжан Цян, Лю Шаоцзюнь, Луо Зевей та Джі Ран. "ОХОЛОДЖЕННЯ НАДДУВНОГО ПОВІТРЯ ГОЛОВНОГО СУДНОВОГО ДВИГУНА ЕЖЕКТОРНОЮ ХОЛОДИЛЬНОЮ МАШИНОЮ В ЕКВАТОРІАЛЬНИХ ШИРОТАХ". Aerospace technic and technology, № 2 (27 квітня 2020): 24–29. http://dx.doi.org/10.32620/aktt.2020.2.04.

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The efficiency of cooling the scavenge air of the main low-speed engine of the transport vessel during operation in the equatorial tropical latitudes is analyzed. The peculiarity of the tropical climate is the high relative humidity of the air at the same time its high temperatures and temperatures of seawater. The cooling of the s scavenge air with a refrigerant ejector chiller was investigated by transforming the scavenge air heat into the cold. With this, the potentially possible minimum temperature of the cooled air was determined considering the boiling temperature of the refrigerant and

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Вахрамеев, Д. А., И. А. Дерюшев, Е. А. Потапов, А. А. Мартюшев, and Ф. Р. Арсланов. "JUSTIFICATION OF AIR CHARGE PARAMETERS AT DIESEL START-UP UNDER LOW TEMPERATURES." Bulletin of Izhevsk State Agricultural Academy, no. 2(74) (June 30, 2023): 64–70. http://dx.doi.org/10.48012/1817-5457_2023_2_64-70.

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Существенным недостатком при эксплуатации дизельных двигателей является затрудненный пуск в зимний период. Целью работы было создание в цилиндрах дизельного двигателя топливовоздушной смеси с показателями, обеспечивающими его гарантированный пуск в условиях низких температур. Для обеспечения точности теоретических расчетов температуры топливовоздушной смеси предложено ввести поправочный коэффициент К, учитывающий пониженное значение фактической компрессии в процессе пуска дизеля. На базе установленного на открытой площадке стенда проведена серия испытаний по исследованию эффективности применен

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Lyu, Long. "Modeling and Optimization of Ship Waste Heat Utilization System Based on Genetic Algorithm and Sensing." International Transactions on Electrical Energy Systems 2022 (August 29, 2022): 1–8. http://dx.doi.org/10.1155/2022/9917212.

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In order to solve the optimization problem of ship waste heat utilization system, the modeling and optimization method of ship waste heat utilization system based on genetic algorithm and sensing is proposed. The 6S50ME-C8.2 volume method model was established based on Matlab/Simulink simulation platform. According to the test data of the 6S50ME-C8.2 diesel engine, the simulation value is very close to the test value, which verifies the accuracy of the simulation model. The experimental results show that the thermal efficiency of high-power medium and low-speed two-stroke diesel engines is hig

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Allmägi, Roland, Risto Ilves, and Jüri Olt. "COMPREHENSIVE REVIEW OF INNOVATION IN PISTON ENGINE AND LOW TEMPERATURE COMBUSTION TECHNOLOGIES." Transport 39, no. 1 (2024): 86–113. http://dx.doi.org/10.3846/transport.2024.21333.

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Global transport today is mainly powered by the Internal Combustion Engine (ICE) and throughout its century and a half of development it has become considerably more efficient and cleaner. Future prospects of the ICE rely on the scientific work conducted today to keep this trend of higher efficiency and cleaner emissions in new engines going. The aim of this article is to give a comprehensive review of development directions in novel piston engine designs, which seek to overcome the drawbacks of the ubiquitous 4-stroke piston engine. One of the directions of development is devoted to improving

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Smith, James E., and Randy Churchill. "A Concept Review of Low-Heat-Rejection Engines." Applied Mechanics Reviews 42, no. 3 (1989): 71–90. http://dx.doi.org/10.1115/1.3152422.

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Insulated engines have become popular ideas with the development of new materials and material processing techniques. Several research groups have been involved and are producing needed, quality information about low-heat-rejection engines. To date, a comprehensive review has not been presented, like the work included here, that identifies and discusses the various programs and results, or even the breadth of the different topics being undertaken. This paper presents a comprehensive literature review of low-heat-rejection engine concepts and brief discussions of some modeling techniques, both

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Lottmann, Matthias, Zachary de Rouyan, Linda Hasanovich, et al. "Development of a 100-Watt-Scale Beta-Type Low Temperature Difference Stirling Engine Prototype." E3S Web of Conferences 313 (2021): 08004. http://dx.doi.org/10.1051/e3sconf/202131308004.

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This paper documents the ongoing design process of a Stirling engine prototype for a source temperature of 95 °C, aiming to achieve shaft power on the order of 100 Watts. The engine will serve to produce experimental data for the validation of a numerical low temperature Stirling model. The higher-level motivation is to assess the technical and economical potential of producing power from abundant sources of low temperature heat by using Stirling engines. Design decisions are governed by the goals of minimizing energy losses and maximizing the variability of operating points through variable h

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Радченко, Андрій Миколайович, Дмитро Вікторович Коновалов, Іван Володимирович Калініченко, Чен Нінь та Хан Баочен. "ОХОЛОДЖЕННЯ НАДДУВНОГО ПОВІТРЯ ГОЛОВНОГО СУДНОВОГО ДВИГУНА АБСОРБЦІЙНОЮ БРОМИСТОЛІТІЄВОЮ ХОЛОДИЛЬНОЮ МАШИНОЮ В ЕКВАТОРІАЛЬНИХ ШИРОТАХ". Aerospace technic and technology, № 2 (27 квітня 2020): 30–35. http://dx.doi.org/10.32620/aktt.2020.2.05.

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The efficiency of cooling the scavenge air of the main low-speed engine of the transport vessel during operation in the equatorial tropical latitudes is analyzed. The peculiarity of the tropical climate is the high relative humidity of the air at the same time its high temperatures and temperatures of seawater. The cooling of the scavenge air with an absorption lithium bromide chiller by transforming the scavenge air heat into the cold was investigated. With this, the potentially possible minimum temperature of the cooled air was determined considering the temperature of the cold water (coolan

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Gonsalves, Sheetal, and Swapna Gabbur. "Enhancing convective heat transfer in engine oil: a comparative study of various nanoparticles." Structural Integrity and Life 25, Special Issue A (2025): S9—S15. https://doi.org/10.69644/ivk-2025-sia-0009.

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The study explores heat transfer properties of five different nanofluid flows past an oil cooling system. The numerical investigation is carried out by developing mathematical model by utilising nanofluids volume fraction in engine oil based nanofluid containing solid particles of molybdenum disulfide (MoS2), aluminium oxide (Al2O3), titanium oxide (TiO2), graphene oxide (GO), and copper (Cu). The system of PDE is converted to ODE using appropriate similarity transformations and then solved by employing the FEM. The influence of different nanoparticles on temperature and velocity distributions

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TAKEUCHI, Makoto, and Shinji SUZUKI. "Characteristics of Low Temperature Stirling Engine at Heat Pump Operation." Proceedings of the Symposium on Stirlling Cycle 2000.4 (2000): 157–60. http://dx.doi.org/10.1299/jsmessc.2000.4.157.

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Kurhe, Niranjan, Adinath Funde, Pritesh Gokhale, Sandesh Jadkar, Subhash Ghaisas, and Abhijit Date. "Development of Low Temperature Heat Engine for Water Pumping Application." Energy Procedia 110 (March 2017): 292–97. http://dx.doi.org/10.1016/j.egypro.2017.03.142.

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Yin, Yuwei. "Study on the Circulation Efficiency of Different Nonideal Gases." Highlights in Science, Engineering and Technology 5 (July 7, 2022): 75–85. http://dx.doi.org/10.54097/hset.v5i.726.

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The thermodynamic properties of two kinds of representative non-ideal real gases van der Waals gas and Onnes gas are expounded and discussed by common thermodynamic methods, and the specific expressions of heat engine efficiency based on Carnot cycle, Stirling cycle and Otto cycle with these two real gases as working fluids are derived through theoretical derivation and calculation. On this basis, the variation rules of various thermal efficiency corresponding to heat engine with cycle parameters (such as high-temperature heat source temperature T1, low-temperature heat source temperature T2,

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DOLGUSHIN, А. А., A. F. KURNOSOV, and R. V. CHERNUKHIN. "HEAT EXCHANGE OF THE TRANSMISSION UNITS OF TRUCK ENGINE." Tekhnicheskiy servis mashin 62, no. 2 (2024): 65–70. http://dx.doi.org/10.22314/2618-8287-2024-62-2-65-70.

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A significant share of goods in agriculture are transported by road at low ambient temperatures. Changing the properties of oils in these conditions significantly reduces the efficiency of the machines and requires additional measures for the thermal preparation of the units. (Research purpose) The research purpose is identifying heat flows between the engine and the transmission units of a truck and their effect on the thermal mode of the middle and rear axles. (Materials and methods) We performed experimental studies on a KamAZ 65115 car. Convective heat flows and heat transfer through therm

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Lebedevas, Sergejus, and Tomas Čepaitis. "Complex Use of the Main Marine Diesel Engine High- and Low-Temperature Waste Heat in the Organic Rankine Cycle." Journal of Marine Science and Engineering 12, no. 3 (2024): 521. http://dx.doi.org/10.3390/jmse12030521.

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The decarbonization problem of maritime transport and new restrictions on CO2 emissions (MARPOL Annex VI Chapter 4, COM (2021)562) have prompted the development and practical implementation of new decarbonization solutions. One of them, along with the use of renewable fuels, is the waste heat recovery of secondary heat sources from a ship’s main engine, whose energy potential reaches 45–55%. The organic Rankine cycle (ORC), which uses low-boiling organic working fluids, is considered one of the most promising and energy-efficient solutions for ship conditions. However, there remains uncertaint

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Yang, Lining, Xiaoxia Sun, and Tao Zhang. "Performance Simulation Analysis of Modular Heat Dissipation Unit." Journal of Physics: Conference Series 2160, no. 1 (2022): 012063. http://dx.doi.org/10.1088/1742-6596/2160/1/012063.

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Abstract In this paper, GT suite software is used to model the cooling system of military special vehicles with multiple power sources. The power drive system is composed of main engine, auxiliary engine and four hub motors. By constructing modular cooling unit, the volume of radiator and the layout of cooling unit are changed. While the total volume of radiator is unchanged, the cooling capacity of cooling system is improved. Firstly, the problem is simplified and modeled by high-temperature and low-temperature double circuit. The main engine with power of 600kW and auxiliary engine with powe

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Kropiwnicki, Jacek, and Aleksandra Szewczyk. "Stirling Engines Powered by Renewable Energy Sources." Applied Mechanics and Materials 831 (April 2016): 263–69. http://dx.doi.org/10.4028/www.scientific.net/amm.831.263.

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Stirling engine is a device that produces mechanical energy using heat from any source of energy, without the need of combustion of any fuel inside the device. Renewable energy sources, which are mostly low-temperature energy sources, can be used to produce mechanical and electrical energy in Stirling engines. The paper presents an overview of the existing prototype Stirling engines designed for using of low-temperature energy sources, including renewable energy sources. Commercial devices for electric power generation offered for use in home, usually do not exceed 1 kW. Using the Schmidt mode

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Faităr, C., D. Jugănaru, N. Buzbuchi, L.-C. Stan, and V. Poenaru. "Study of the functional parameters of main engine turbocharger for a tanker ship." IOP Conference Series: Materials Science and Engineering 1182, no. 1 (2021): 012024. http://dx.doi.org/10.1088/1757-899x/1182/1/012024.

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Abstract To correctly understand the requirements of a system, we must first study its schematics. In the case of energy systems, they require a detailed diagram of energy performance. Heat losses can be classified into high-temperature losses, medium-temperature and low-temperature losses. On board ships with low-speed propulsion engines, heat recovery systems operate in the range of 100-400 °C. Many residual energy recovery systems from internal combustion engines are under development: for example the MAN WHR development program for Tier III technologies. In this paper, I will treat both th

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