Details

Title

The analysis of thermal and flow characteristics of the condensation of refrigerant zeotropic mixtures in minichannels

Journal title

Archives of Thermodynamics

Yearbook

2016

Numer

No 2

Publication authors

Keywords

General Physics and Astronomy

Divisions of PAS

Nauki Techniczne

Abstract

<jats:title>Abstract</jats:title><jats:p>The paper presents the results of experimental heat transfer and pressure drop during condensation of the single component refrigerant R134a and zeotropic mixtures R404A, R407C, and R410A in tube minichannels of internal diameter from the range 0.31-3.30 mm. The local values and the average of heat transfer coefficient and pressure drop in the whole range of the change in mass quality were measured. On the basis of the obtained test results there was illustrated the influence of the change of mass vapor quality, the mass flux density, and the inner diameter of channel on the studied parameters. These results were compared with the calculation results based on the relations postulated by other authors. The discrepancy range was ± 50%. On the basis of given test results own correlation was developed to calculate the heat transfer coefficient and pressure drop of tested refrigerants which presents the obtained results in a range of discrepancy of ±25%.</jats:p>

Publisher

The Committee on Thermodynamics and Combustion of the Polish Academy of Sciences

Date

2016

Identifier

eISSN 2083-6023 ; ISSN 1231-0956

DOI

10.1515/aoter-2016-0012

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