Experimental investigation on two-phase flow boiling heat transfer of five refrigerants in horizontal small tubes of 0.5, 1.5 and 3.0 mm inner diameters

Pressure Drop and Boiling Heat Transfer Characteristics of R410A in Macro-Scale and Mini-Scale Channels

“…It indicates that the nucleate boiling is predominant in mini-channel. The similar results are reported in other studies [10,[25][26][27][28]. The different contribution of nucleate boiling to the heat transfer coefficient of refrigerant between mini-channel and conventional channel, therefore, should be validated before applying the heat transfer model of macro-scale to mini-scale channel and vice versa.…”

“…In order to bring out an overview to the reader, this chapter investigates the experimental results with the wide range of operating conditions as well as the tube diameters, which have been evaluated in our lab in the past [9][10][11] and recently. The influence of mass flux, heat flux and channel diameter on the heat transfer coefficient and pressure drop was well reported.…”

Cooling of air using heptadecane phase change material in shell and tube arrangement: Analytical and experimental study

“…On the other hand, from the heat transfer point of view, tubes of smaller diameter yield higher heat transfer co-efficient [57] is decreased, the Reynolds number is increased due to increase of velocity of air. Accordingly, better cooling effect was observed for reducing tube inner radius as shown in Fig.…”

A Critical Review of Recent Investigations on Flow Pattern and Heat Transfer During Flow Boiling in Micro-Channels

“…Nevertheless, R-134a provided high heat transfer coefficients in comparison to R-245fa. Lee et al (2010) Convective boiling heat transfer experiments were carried out by Oh et al (2011) for t ubes with diameters of 0.5, 1.5 a nd 3.0 m m. There were five refrigerants used in their study, i.e. R-22, R-134a, R-410A, C 3 H 8 and CO 2 .…”