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Two-phase flow heat transfer and pressure drop characteristics of R22 and R32-R135.

Author(s) : WIJAYA H., SPATZ M. W.

Summary

The test facility and testing conditions are described in detail. The results showed that at similar mass fluxes the condensation heat transfer coefficients for R32-125 were slightly higher (about 2 to 6%) than those of R22. The pressure drops for R32-R125 were significantly lower (about 25 to 45%) than those of R22. However, the evaporation heat transfer coefficients of R32-R125 were much higher (about 23 to 63%), and its pressure drops were significantly lower (about 20 to 38%) than those of R22.

Details

Original title: Two-phase flow heat transfer and pressure drop characteristics of R22 and R32-R135.
Record ID : 1996-2173
Languages: English
Source: ASHRAE Transactions.
Publication date: 1995/01
Document available for consultation in the library of the IIR headquarters only.

Links

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Indexing

Themes: HCFCs;
HFCs;
Mass transfer;
Two-phase flow;
Blends
Keywords: Two-phase flow; Measurement; Heat transfer; R32; R22; R125; Mixture; Evaporation; Condensation; Pressure drop