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Title: Two simple models of classical heat pumps
Authors: Marathe, Rahul
Jayannavar, A.M.
Dhar, Abhishek
Keywords: Nonequilibrium
irreversible thermodynamics
Fluctuation phenomena
random processes
Brownian motion
Transport processes
Issue Date: Mar-2007
Publisher: American Physical Society
Citation: Physical Review E, 2007, Vol.75, p030103
Abstract: Motivated by recent studies of models of particle and heat quantum pumps, we study similar simple classical models and examine the possibility of heat pumping. Unlike many of the usual ratchet models of molecular engines, the models we study do not have particle transport. We consider a two-spin system and a coupled oscillator system which exchange heat with multiple heat reservoirs and which are acted upon by periodic forces. The simplicity of our models allows accurate numerical and exact solutions and unambiguous interpretation of results. We demonstrate that while both our models seem to be built on similar principles, one is able to function as a heat pump (or engine) while the other is not.
Description: Open Access
ISSN: 1539-3755
1550-2376 (online)
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Copyright: 2007, The American Physical Society
Appears in Collections:Research Papers (TP)

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