Vortex tube heat booster to improve performance of heat driven cooling cycles

Jingwei Zhu, Stefan Elbel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Increasing energy costs justify research on how to improve utilization of low-grade energy that is abundantly available as solar energy or as waste heat from many thermodynamic processes. One option is to directly generate cooling through absorption/adsorption or vapor jet ejector cycles. As in the case of power generation cycles, cooling cycle efficiencies would increase if the heat input were available at higher temperature. This paper assesses the feasibility of a novel idea that uses a vortex tube to increase the available temperature levels of low-grade heat sources. The desired temperature increase is achieved by sending a stream of vapor that was heated by the waste heat source through a vortex tube, which further elevates the temperature used in a heat driven ejector cooling cycle. Simulation results show that COP can be increased by 12% with the use of the vortex tube heat booster when the cycle is operating with low entrainment ratio at conditions where baseline performance and COP are low.

Original languageEnglish (US)
Title of host publication24th IIR International Congress of Refrigeration, ICR 2015
PublisherInternational Institute of Refrigeration
Pages2361-2368
Number of pages8
ISBN (Electronic)9782362150128
DOIs
StatePublished - Jan 1 2015
Event24th IIR International Congress of Refrigeration, ICR 2015 - Yokohama, Japan
Duration: Aug 16 2015Aug 22 2015

Publication series

NameRefrigeration Science and Technology
ISSN (Print)0151-1637

Other

Other24th IIR International Congress of Refrigeration, ICR 2015
CountryJapan
CityYokohama
Period8/16/158/22/15

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

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