Applied Energy 154 (2015) 40–50 Contents lists available at ScienceDirect Applied Energy journal homepage: www.elsevier.com/locate/apenergy Experimental study of heat transfer enhancement in a liquid piston compressor/expander using porous media inserts 1 1 2 ⇑ Bo Yan , Jacob Wieberdink , Farzad Shirazi , Perry Y. Li , Terrence W. Simon, James D. Van de Ven Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455, USA highlights graphical a bstract Porous medias role to improve compressor/expander performance shown experimentally. Signiﬁcant increase in efﬁciency increase (up to 18%) at ﬁxed power density. Signiﬁcant increase in power density (up to 39 folds) at ﬁxed efﬁciency. Surface area is the predominant contribution to improvements. ar ti c l e i nf o ab stra ct Article history: The efﬁciency and power density of gas compression and expansion are strongly dependent on heat Received 25 November 2014 transfer during the process. Since porous media inserts can signiﬁcantly increase heat transfer surface Received in revised form 24 April 2015 area, their addition to a liquid piston compressor/expander has been hypothesized to reduce the time Accepted 25 April 2015 to complete the compression or expansion process and hence the power density for a given thermody-
Applied Energy – Elsevier
Published: Sep 15, 2015
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