TitleHeat transfer during condensation of refrigerants in tubular minichannels
Journal titleArchives of Thermodynamics
NumerNo 2 September
Divisions of PASNauki Techniczne
AbstractAbstract 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.
PublisherThe Committee on Thermodynamics and Combustion of the Polish Academy of Sciences
IdentifiereISSN 2083-6023 ; ISSN 1231-0956