Journal
EXPERIMENTAL THERMAL AND FLUID SCIENCE
Volume 51, Issue -, Pages 257-263Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.expthermflusci.2013.08.006
Keywords
Single stage heat transformer; Economizer; Effectiveness; epsilon - NTU method; Energy balance; Water/Carrol
Funding
- CONACyT [167434]
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This paper analyzes the effectiveness of a Plate Heat Exchanger (PHE) used as an economizer integrated into an experimental Single Stage Heat Transformer (SSHT). The heat exchanger effectiveness (eta), some-times referred as thermal efficiency, is an important parameter for the design of heat transfer equipment. Two thermodynamic methods for eta evaluation are shown. The overall heat transfer coefficient (U) and the individual convective heat transfer coefficients (h) were calculated for Water/Carrol mixture. Four SSHT experimental tests runs were carried out, in order to evaluate the eta. The economizer effectiveness ranged from 0.69 to 0.71. Finally, the eta effect for Coefficient of Performance (COP) is shown as a function of absorber temperature. (C) 2013 Elsevier Inc. All rights reserved.
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