Description

In this study, solubility data are used to explain temperature measurements obtained for a refrigerant/lubricant mixture at the inlet and exit of an evaporator and condenser. The significance of these solubility effects on determining two-phase heat transfer coeffcients for refrigerant/lubricant mixtures is also discussed. As part of this study, solubility data are presented for HFC-134a (R134a) and a 169 SUS and 369 SUS penta erythritol ester mixed acid over a temperature range of -10 deg C (14 deg F) to 50 deg C (122.0 deg F) for lubricant concentrations from 0% to 45%. The data were statistically correlated and solubility equations were presented. The range of temperatures and concentrations evaluated reflects conditions typically found in a refrigeration-type evaporator or condenser.

KEYWORDS: models, data, lubricants, evaporators, condensers, refrigeration, R134a, heat exchangers, temperature, measuring, refrigerants, solubility.

Citation: ASHRAE Trans. 1993, vol. 99, Part 2, Paper number 3730 (RP-630), 383-391, 10 figs, 4 tabs, 5 refs.

Product Details

Published:

1993

File Size:

1 file , 1.2 MB

Product Code(s):

D-17427