Results 21 to 30 of about 69,983 (311)

Thermodynamic work in inline piston gasoline engines as a function of crank angle [PDF]

open access: yesE3S Web of Conferences, 2020
The purpose of this research work is to identify the laws of thermodynamic operation in the theoretical cycles of four-stroke inline piston gasoline internal combustion engines (ICE).
Egorov Aleksey   +7 more
doaj   +1 more source

Thermodynamics of Heat Pump and Refrigeration Cycles [PDF]

open access: yesEntropy, 2021
Energy consumption for heating and cooling in buildings and industry accounts for almost half of total energy consumption in all sectors [...]
openaire   +4 more sources

Performance Optimization of Generalized Irreversible Refrigerator Based on a New Ecological Criterion

open access: yesEntropy, 2013
On the basis of the exergy analysis, a performance optimization is carried out for a generalized irreversible refrigerator model, which takes into account the heat resistance, heat leakage and internal irreversibility losses.
Jie Xu, Liping Pang, Jun Wang
doaj   +1 more source

Thermodynamic cycles in Josephson junctions [PDF]

open access: yesScientific Reports, 2019
AbstractA superconductor/normal metal/superconductor Josephson junction is a coherent electron system where the thermodynamic entropy depends on temperature and difference of phase across the weak-link. Here, exploiting the phase-temperature thermodynamic diagram of a thermally isolated system, we argue that a cooling effect can be achieved when the ...
Vischi F   +5 more
openaire   +3 more sources

An Overview of Real Gas Brayton Power Cycles: Working Fluids Selection and Thermodynamic Implications

open access: yesEnergies, 2023
This paper discusses and reviews the main real gas effects on the thermodynamic performance of closed Brayton cycles. Cycles with carbon dioxide as working fluids are taken as a reference and a comparison of the thermodynamic cycle efficiencies that are ...
Costante Mario Invernizzi   +1 more
doaj   +1 more source

A review on Thermodynamics in Water Cycle with Emphasizing on Entropy and Maximum Entropy Production Principle [PDF]

open access: yesعلوم و مهندسی آب و فاضلاب, 2022
Hydrological cycle is directed into thermodynamic non-equilibrium state and maximum entropy production through thermodynamic processes. Therefore, it is possible to understand and describe hydrological cycle through computation of entropy production rate
Diba Ghonchepour, Abdolreza Bahremand
doaj   +1 more source

Quantum thermodynamic cooling cycle [PDF]

open access: yesPhysical Review E, 2001
The quantum-mechanical and thermodynamic properties of a 3-level molecular cooling cycle are derived. An inadequacy of earlier models is rectified in accounting for the spontaneous emission and absorption associated with the coupling to the coherent driving field via an environmental reservoir.
Palao, Jose P.   +2 more
openaire   +3 more sources

Thermodynamic Analysis of Expansion Profile for Displacement-type Expander in Low-temperature Rankine Cycle

open access: yesJournal of Thermal Science and Technology, 2010
Thermodynamic analysis of the isentropic and polytropic expansion profiles of typical working fluids was carried out in order to design a highly efficient displacement-type expander for a low-temperature Rankine cycle.
Mohd-Tahir MUSTHAFAH, Noboru YAMADA
doaj   +1 more source

Optimization of Schematic and Parameters of Staged Combustion Launch Vehicle Liquid Engines [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2016
The purpose of this paper is to present a genetic algorithm (as a software) to optimize engine main parameters through the application of "genetic algorithm" and also introduced the new and modified thermodynamic cycles with analysing their performance ...
Davood Ramesh   +2 more
doaj  

Reply to the Comments on: Tian Zhao et al. The Principle of Least Action for Reversible Thermodynamic Processes and Cycles. Entropy 2018, 20, 542

open access: yesEntropy, 2018
The purpose of this reply is to provide a discussion and closure for the comment paper by Dr. Bormashenko on the present authors’ article, which discussed the application of the principle of least action in reversible thermodynamic processes and cycles ...
Zeng-Yuan Guo, Tian Zhao, Yu-Chao Hua
doaj   +1 more source

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