Optimal low symmetric dissipation Carnot engines and refrigerators
MetadataShow full item record
A unified optimization criterion for Carnot engines and refrigerators is proposed. It consists of maximizing the product of the heat absorbed by the working system times the efficiency per unit time of the device, either the engine or the refrigerator. This criterion can be applied to both low symmetric dissipation Carnot engines and refrigerators. For engines the criterion coincides with the maximum power criterion and then the Curzon-Ahlborn efficiency ? CA=1-vT c/T h is recovered, where T h and T c are the temperatures of the hot and cold reservoirs, respectively. For refrigerators the criterion provides the counterpart of Curzon-Ahlborn efficiency for refrigerators > CA=[1/ (v1-(T c/T h)]-1, first derived by Yan and Chen for the particular case of an endoreversible Carnot-type refrigerator with linear (Newtonian) finite heat transfer laws. © 2012 American Physical Society.
Showing items related by title, author, creator and subject.
Glasser, Leslie; Fox, J.; Hildebrandt, D.; Glasser, D. (2018)© 2018, The Author(s). Industrial steady-flow chemical processes are generally organised as a sequence of individually optimised operations. However, this may not achieve overall optimization since material (as recycle), ...
Dong, Hai (2010)With the emergence of the Web and its pervasive intrusion on individuals, organizations, businesses etc., people now realize that they are living in a digital environment analogous to the ecological ecosystem. Consequently, ...
Comparative Carbon Footprint Assessment of commercial walk-in refrigeration systems under different use configurationsCascini, A.; Gamberi, M.; Mora, C.; Rosano, Michele; Bortolini, M. (2016)The design of refrigeration systems must strictly comply with the rules determined by the increasingly stringent international regulations on the use of refrigerants. Regardless of the restrictions imposed, the compliance ...