Details

Title

Heat transfer during condensation of refrigerants in tubular minichannels

Journal title

Archives of Thermodynamics

Yearbook

2012

Numer

No 2 September

Publication authors

Divisions of PAS

Nauki Techniczne

Abstract

Abstract The present paper describes the results of experimental investigations of heat transfer during condensation of R134a, R404A and R407C in pipe minichannels with internal diameters 0.31-3.30 mm. The results concern investigations of the local heat transfer coefficient. The results were compared with the correlations proposed by other authors. Within the range of examined parameters of the condensation process in minichannels made of stainless steel, it was established that the values of the heat transfer coefficient may be described with Akers et al., Mikielewicz and Shah correlations within a limited range of the mass flux density of the refrigerant and the minichannel diameter. On the basis of experimental investigations, the authors proposed their own correlation for the calculation of local heat transfer coefficient.

Publisher

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

Date

2012

Identifier

eISSN 2083-6023 ; ISSN 1231-0956

DOI

10.2478/v10173-012-0008-x

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