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Initial Condensation Comparison of R-22 With R-134a and R-321R-125

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PDF TR041.pdf (2MB) ACRC Technical Report 41 PDF
Title: Initial Condensation Comparison of R-22 With R-134a and R-321R-125
Author(s): Dobson, M.K.; Chato, J.C.; Wang, S.P.; Hinde, D.K.; Gaibel, J.A.
Subject(s): refrigerant-side evaporation condensation studies
Abstract: Condensation heat transfer data are reported for R-22 and two potential replacements: R-134a, and a 60%/40%, azeotropic mixture of R-32 and R-125. All condensation data were collected in an 0.18" ID (4.572 mm), smooth copper tube. The heat transfer data are compared directly with one another, as well as with heat transfer correlations developed within the ACRC for the wavy and the annular flow regimes. At constant mass flux, the heat transfer coefficients of the three refrigerants were nearly identical in both the annular and the wavy flow regimes. This agreed with predictions of the correlations. The pressure drop was highest for R-134a, followed by R-22 and R- 32/R-125. The condensation heat transfer correlations developed in the ACRC were found to fit the data quite well for each of the refrigerants.
Issue Date: 1993-06
Publisher: Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report: Air Conditioning and Refrigeration Center TR-41
Genre: Technical Report
Type: Text
Language: English
URI: http://hdl.handle.net/2142/9743
Sponsor: Air Conditioning and Refrigeration Center Project 01
Date Available in IDEALS: 2009-03-13
 

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