Results 41 to 50 of about 3,219,487 (379)

Black holes in massive gravity as heat engines

open access: yesPhysics 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
doaj   +1 more source

Regular Bardeen AdS black hole as a heat engine

open access: yesNuclear 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
doaj   +1 more source

Holographic heat engines [PDF]

open access: yesClassical 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.
openaire   +2 more sources

Correlations of heat and charge currents in quantum-dot thermoelectric engines [PDF]

open access: yes, 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

Optimization of a Thermomagnetic Heat Engine for Harvesting Low Grade Thermal Energy

open access: yesEnergies, 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
doaj   +1 more source

The advisability of using combustion chambers with a toroidal recirculation-mixing zone in small-sized gas turbine engines

open access: yesMATEC 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

Experimental Characterization of a Spin Quantum Heat Engine. [PDF]

open access: yesPhysical Review Letters, 2018
Developments in the thermodynamics of small quantum systems envisage nonclassical thermal machines. In this scenario, energy fluctuations play a relevant role in the description of irreversibility.
J. P. S. Peterson   +6 more
semanticscholar   +1 more source

Powerful energy harvester based on resonant-tunneling quantum wells [PDF]

open access: yes, 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

Investigation of important semi-empirical heat transfer models for a natural gas-fueled HCCI engine

open access: yesEnergy Reports, 2021
Homogeneous charge compression ignition engine is a promising alternative to traditional internal combustion engines mainly due to its high thermal efficiency, low NOx, and soot emissions.
Masoud Rabeti   +4 more
doaj   +1 more source

Turbocharged Diesel Engine Power Production Enhancement: Proposing a Novel Thermal-Driven Supercharging System based on Kalina Cycle [PDF]

open access: yesRenewable Energy Research and Applications, 2020
In this paper, a novel thermal driven supercharging system for downsizing of a turbocharged diesel engine is proposed. Furthermore, Kalina cycle has been used as waste heat recovery system to run the mounted supercharging system. The waste heat of air in
F. Salek   +2 more
doaj   +1 more source

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