University of Illinois Urbana-Champaign

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

Dobson, M.K.; Chato, J.C.; Wang, S.P.; Hinde, D.K.; Gaibel, J.A.

Content Files
TR041.pdf

Permalink

https://hdl.handle.net/2142/9743

Description

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.
Issue Date
1993-06
Keyword(s)
refrigerant-side evaporation condensation studies
Date of Ingest
2009-03-13T18:31:35Z
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."
Publisher
Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report Name or Number
Air Conditioning and Refrigeration Center TR-41
Type of Resource
text
Genre of Resource
Technical Report
Language
en
Permalink
http://hdl.handle.net/2142/9743
Sponsor(s)/Grant Number(s)
Air Conditioning and Refrigeration Center Project 01

Owning Collections

Technical Reports - Air Conditioning and Refrigeration Center PRIMARY