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Prediction of the capacity of a heat exchanger by a thermal network method: Modified effective specific heat model considering the influence of static pressure distributions of refrigerants

✍ Scribed by Kunihiko Kaga; Kenichi Yamada; Satoru Kotoh; Teturo Ogushi

Publisher: John Wiley and Sons
Year: 2002
Tongue: English
Weight: 154 KB
Volume: 31
Category: Article
ISSN: 1099-2871
DOI: 10.1002/htj.10039

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✦ Synopsis

Abstract

In this paper, we proposed a method to predict the capacity of a heat exchanger by considering static pressure distributions of refrigerants. The thermal network method was modified by adding an equivalent heat generation term into a heat balance equation that was connected with calculated 1D static pressure distributions of refrigerants. An experiment was performed with a heat exchanger having two rows and two passes to verify the accuracy of the proposed method. The result showed the error of the predicted capacity to be less than 1% for an evaporator and less than 2% for a condenser. © 2002 Wiley Periodicals, Inc. Heat Trans Asian Res, 31(5): 376–390, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/htj.10039

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## Abstract In this paper a thermal network method using the effective specific heat model of a refrigerant with phase change is proposed for predicting the capacity of a plate‐fin and tube‐type heat exchanger. The effective specific heat model can attain an accurate result of a condenser's heat ex