Title

Exergy analysis of advanced transcritical CO2 air conditioning cycles

Document Type

Article

Publication Date

1-1-2008

Publication Title

International Journal of Exergy

Volume

5

Issue

2

First Page

150

Keywords

CO 2, Exergy, FGR, Flash gas removal, Two-stage

Last Page

163

Abstract

The energy and exergy balance methods were performed on two advanced transcritical CO2 air conditioning cycles presented in the literature. In addition to the basic transcritical CO2 air conditioning cycle which has five main components, compressor, gas cooler, evaporator, expansion valve and internal heat exchanger, two advanced cycles are investigated; both have two-stage compressor (low stage and high stage) and intercooler, with one of them has an additional Flash Gas Removal (FGR) chamber. The results demonstrated that the compressor-low stage has the largest exergy loss, while the intercooler has the smallest exergy loss in advanced transcritical CO2 air conditioning cycles. Moreover, it demonstrated that the FGR had a minimal effect on improving COP of the system. Copyright © 2008 Inderscience Enterprises Ltd.

DOI

10.1504/IJEX.2008.016672

ISSN

17428297

E-ISSN

17428300

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