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Experimental and theoretical study on flow condensation with non-azeotropic refrigerant mixtures of R32/R134a.
Author(s) : SHAO D. W., GRANRYD E.
Type of article: Article, IJR article
Summary
Experiments on flow condensation have been conducted with both pure R32, R134a and their mixtures inside a tube (10 m long, 6 mm inside diameter), with a mass flux of 131-369 kg/m2.s and average condensation temperature of 23-40 deg C. The experimental heat transfer coefficients are compared with those predicted from correlations. Non-ideal properties of the mixture have a certain, but relatively small, influence on the degradation. Among others, temperature and concentration gradients, slip, etc., are also causes of heat transfer degradation.
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Details
- Original title: Experimental and theoretical study on flow condensation with non-azeotropic refrigerant mixtures of R32/R134a.
- Record ID : 1998-3420
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 21 - n. 3
- Publication date: 1998/05
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Indexing
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Themes:
HFCs;
Mass transfer;
Blends - Keywords: R134a; Heat transfer coefficient; Heat transfer; R32; Zeotropic mixture; Refrigerant; Condensation
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