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http://dx.doi.org/10.3795/KSME-B.2003.27.8.1033

A Study on Two-Phase Flow Pattern of Pure Refrigerants R134a and Rl23 and Zeotropic Mixture R134a/R123 in Horizontal Tubular  

Lim, Tae-Woo (부경대학교 기계공학부)
Kim, Jun-Hyo (목포해양대학교 기관시스템공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.27, no.8, 2003 , pp. 1033-1041 More about this Journal
Abstract
Two-phase flow pattern data during horizontal in-tube flow boiling are presented for pure and mixed refrigerants of R134a and Rl23, The flow pattern is observed through tubular sight glasses located at inlet and outlet of the test section, which is made of a stainless steel tube, 2m long with 10mm I.D., 1.5mm wall thickness. The obtained results are compared with the available various correlations for flow pattern. The flow pattern map of Hashizume was in good agreement with the present data except the region of low mass velocity. Weisman flow pattern map was also known to satisfactorily predict data for refrigerants in the region of annular flow. In this study, the flow pattern are simply classified into two groups; stratified(including intermittent, stratified and stratified-wavy) flow and annular flow. The transition quality from stratified to annular flow was obtained by modifying the liquid Froude number.
Keywords
Annular Flow; Intermittent Flow; Stratified Flow; Two-Phase Flow Pattern Map;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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