Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Ramandeep S. Johal"'
Autor:
Jasleen Kaur, Ramandeep S. Johal
Publikováno v:
Entropy, Vol 26, Iss 3, p 219 (2024)
We consider an autonomous heat engine in simultaneous contact with a hot and a cold reservoir and describe it within a linear irreversible framework. In a tight-coupling approximation, the rate of entropy generation is effectively written in terms of
Externí odkaz:
https://doaj.org/article/339d5cb239914297928250a3304011e1
Autor:
Ramandeep S. Johal, Venu Mehta
Publikováno v:
Entropy, Vol 23, Iss 9, p 1149 (2021)
Quantum thermal machines make use of non-classical thermodynamic resources, one of which include interactions between elements of the quantum working medium. In this paper, we examine the performance of a quasi-static quantum Otto engine based on two
Externí odkaz:
https://doaj.org/article/363ca0190114456bbd6f625f33dc0170
Autor:
Varinder Singh, Ramandeep S. Johal
Publikováno v:
Entropy, Vol 19, Iss 11, p 576 (2017)
We study the optimal performance of Feynman’s ratchet and pawl, a paradigmatic model in nonequilibrium physics, using ecological criterion as the objective function. The analysis is performed by two different methods: (i) a two-parameter optimizati
Externí odkaz:
https://doaj.org/article/fd62c4a102724552b7534c44aa056e42
Autor:
Sachin Sonkar, Ramandeep S. Johal
Publikováno v:
Physical Review A. 107
The concept of majorisation is explored as a tool to characterize the performance of a quantum Otto engine in the quasi-static regime. For a working substance in the form of a spin of arbitrary magnitude, majorisation yields a necessary and sufficien
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::237ab4ea20e296f79ce9f280400d5c52
https://doi.org/10.1103/physreva.107.032220
https://doi.org/10.1103/physreva.107.032220
Autor:
Ramandeep S. Johal
Publikováno v:
American Journal of Physics. 91:79-80
The law of entropy increase for bodies in mutual thermal contact may be argued using the fact that the final temperature in the thermal process is higher than the final temperature in a reversible process for work extraction.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e553ae4d3a499969ed02f9c53ae787a
https://doi.org/10.1119/5.0124068
https://doi.org/10.1119/5.0124068
Autor:
Ramandeep S. Johal
Publikováno v:
American Journal of Physics. 91:328-328
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e40d4a1a642b3bc91bc3f725e96f3d8b
https://doi.org/10.1119/5.0142510
https://doi.org/10.1119/5.0142510
Publikováno v:
Physical review. E. 105(3-1)
We revisit the optimal performance of a thermoelectric generator within the endoreversible approximation, while imposing a finite physical dimensions constraint (FPDC) in the form of a fixed total area of the heat exchangers. Our analysis is based on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67bd0d328b2c645677250413f77b9916
https://pubmed.ncbi.nlm.nih.gov/35428100
https://pubmed.ncbi.nlm.nih.gov/35428100
Autor:
Ramandeep S. Johal, Renuka Rai
Publikováno v:
Physical review. E. 105(4-1)
We show that coupled autonomous thermal machines, in the presence of three heat reservoirs and following a global linear-irreversible description, can have efficiency at maximum power (EMP) which is analogous in form to the EMP of models with two (ho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5f8ea386878032dab4a6d793d45195c
https://pubmed.ncbi.nlm.nih.gov/35590654
https://pubmed.ncbi.nlm.nih.gov/35590654
Autor:
Jasleen Kaur, Ramandeep S. Johal
Thermoelectricity is traditionally explained via Onsager's irreversible, flux-force framework. The coupled flows of heat and electric charge are modelled as steady-state flows, driven by the thermodynamic forces defined in terms of the gradients of l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98a372fd55b04af451ff251a29d65622
http://arxiv.org/abs/2007.04184
http://arxiv.org/abs/2007.04184
Autor:
Ramandeep S. Johal
We investigate generic heat engines and refrigerators operating between two heat reservoirs, for the condition when their efficiencies are equal to each other. It is shown that the corresponding value of efficiency is given as the inverse of the gene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4db0e942308be72a7ad73d6b8e02887b