Results 21 to 30 of about 431,560 (339)
Effect of Finite-Size Heat Source's Heat Capacity on the Efficiency of Heat Engine. [PDF]
Entropy (Basel), 2020 Heat engines used to output useful work have important practical significance, which, in general, operate between heat baths of infinite size and constant temperature. In this paper, we study the efficiency of a heat engine operating between two finite-size heat sources with initial temperature difference.
Ma YH.
europepmc +8 more sources
Holographic heat engines as quantum heat engines [PDF]
Classical and Quantum Gravity, 2020 Certain solutions of Einstein's equations in anti-de Sitter spacetime can be engineered, using extended gravitational thermodynamics, to yield `holographic heat engines', devices that turn heat into useful mechanical work. On the other hand, there are constructions (both experimental and theoretical) where a series of operations is performed on a small
openaire +3 more sources
Experimental characterization of autonomous heat engine based on minimal dynamical-system model
Physical Review Research, 2020 The autonomous heat engine is a model system of autonomous nonequilibrium systems, exploiting nonequilibrium flow for operations. As the Carnot engine has essentially contributed to the equilibrium thermodynamics, an autonomous heat engine is expected to
Shoichi Toyabe, Yuki Izumida
doaj +1 more source
Black holes in massive gravity as heat engines
Physics Letters B, 2018 The paper at hand studies the heat engine provided by black holes in the presence of massive gravity. The main motivation is to investigate the effects of massive gravity on different properties of the heat engine.
S.H. Hendi +4 more
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Regular Bardeen AdS black hole as a heat engine
Nuclear Physics B, 2020 We investigate the thermodynamic phase transition and heat engine efficiency in regular Bardeen AdS black hole. The thermodynamics of the black hole is analyzed in extended phase space.
K.V. Rajani +4 more
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Holographic heat engines [PDF]
Classical and Quantum Gravity, 2014 It is shown that in theories of gravity where the cosmological constant is considered a thermodynamic variable, it is natural to use black holes as heat engines. Two examples are presented in detail using AdS charged black holes as the working substance.
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Correlations of heat and charge currents in quantum-dot thermoelectric engines [PDF]
, 2013 We analyze the noise properties of both electric charge and heat currents as well as their correlations in a quantum-dot based thermoelectric engine. The engine is a three-terminal conductor with crossed heat and charge flows where heat fluctuations can ...
Büttiker, Markus +3 more
core +3 more sources
MATEC Web of Conferences, 2018 The interrelations between the size of the gas turbine engine (GTE) and the size and workflow of the combustion chamber (CC) were considered. On the base of analysis of workflow organization the design of CC with toroidal recirculation mixing zone was ...
Yurievich Orlov Michael +4 more
doaj +1 more source
Optimization of a Thermomagnetic Heat Engine for Harvesting Low Grade Thermal Energy
Energies, 2021 Thermomagnetic energy harvesters are one form of technology that can be effectively used to extract energy from low grade heat sources, without causing damage to the environment.
Zeeshan +2 more
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Powerful energy harvester based on resonant-tunneling quantum wells [PDF]
, 2013 We analyze a heat engine based on a hot cavity connected via quantum wells to electronic reservoirs. We discuss the output power as well as the efficiency both in the linear and nonlinear regime.
Büttiker, Markus +3 more
core +3 more sources