Show simple item record

dc.contributor.authorZhang, Y.
dc.contributor.authorLin, B. H.
dc.contributor.authorChen, J. C.
dc.contributor.author陈金灿
dc.date.accessioned2011-06-28T15:33:29Z
dc.date.available2011-06-28T15:33:29Z
dc.date.issued2006
dc.identifier.citationEUROPEAN PHYSICAL JOURNAL B,2006,53(4):481-485zh_CN
dc.identifier.issn1434-6028
dc.identifier.urihttp://dx.doi.org/doi:10.1140/epjb/e2006-00399-x
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/9846
dc.description.abstractBrownian particles moving in a spatially asymmetric but periodic potential (ratchet), with an external load force and connected to an alternating hot and cold reservoir, are modeled as a microscopic heat engine, referred to as the Brownian heat engine. The heat flow via both the potential energy and the kinetic energy of the particles are considered simultaneously. The forward and backward particle currents are determined using an Arrhenius' factor. Expressions for the power output and efficiency are derived analytically. The maximum power output and efficiency are calculated. It is expounded that the Brownian heat engine is always irreversible and its efficiency cannot approach the efficiency eta(C) of the Carnot heat engine even in quasistatic limit. The influence of the main parameters such as the load, the barrier height of the potential, the asymmetry of the potential and the temperature ratio of the heat reservoirs on the performance of the Brownian heat engine is discussed in detail. It is found that the Brownian heat engines may be controlled to operate in different regions through variation of some parameters.zh_CN
dc.language.isoenzh_CN
dc.publisherSPRINGERzh_CN
dc.titlePerformance characteristics of an irreversible thermally driven Brownian microscopic heat enginezh_CN
dc.typeArticlezh_CN


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record