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Heat transfer and flow pattern during two-phase flow boiling of R-134a in horizontal smooth and microfin tubes

Journal Article:

Abstract

Flow pattern and heat transfer during evaporation in a 10.7 mm diameter smooth tube and a micro-fin tube are presented. The tubes were tested in the ranges of mass flux between 163 and 408 kg m{sup -2}s{sup -1} and heat flux between 2200 and 56 000 W m{sup -2}. The evaporation temperature was 6{sup o}C. Flow maps for both the tubes are plotted in the coordinates of mass flux and vapor quality. The relations of flow pattern and local heat transfer coefficient are discussed. The heat transfer coefficients for intermittent and annular flows in both the smooth tube and the micro-fin tube are shown to agree well with Gungor and Winterton's correlation with modified constants. (author)
Authors:
Yu, Minghuei; Lin, Tsunkuo; Tseng, Chyuanchyi [1] 
  1. National Sun Yat Sen Univ., Taiwan (China). Dept. of Mechanical Engineering
Publication Date:
Sep 01, 2002
Product Type:
Journal Article
Resource Relation:
Journal Name: International Journal of Refrigeration; Journal Volume: 25; Journal Issue: 6; Other Information: PBD: Sep 2002
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; HEAT TRANSFER; TWO-PHASE FLOW; BOILING; REFRIGERANTS; TUBES
OSTI ID:
20295366
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0140-7007; IJRFDI; TRN: GB0220941
Submitting Site:
GB
Size:
page(s) 789-798
Announcement Date:
Nov 20, 2002

Journal Article:

Citation Formats

Yu, Minghuei, Lin, Tsunkuo, and Tseng, Chyuanchyi. Heat transfer and flow pattern during two-phase flow boiling of R-134a in horizontal smooth and microfin tubes. United Kingdom: N. p., 2002. Web.
Yu, Minghuei, Lin, Tsunkuo, & Tseng, Chyuanchyi. Heat transfer and flow pattern during two-phase flow boiling of R-134a in horizontal smooth and microfin tubes. United Kingdom.
Yu, Minghuei, Lin, Tsunkuo, and Tseng, Chyuanchyi. 2002. "Heat transfer and flow pattern during two-phase flow boiling of R-134a in horizontal smooth and microfin tubes." United Kingdom.
@misc{etde_20295366,
title = {Heat transfer and flow pattern during two-phase flow boiling of R-134a in horizontal smooth and microfin tubes}
author = {Yu, Minghuei, Lin, Tsunkuo, and Tseng, Chyuanchyi}
abstractNote = {Flow pattern and heat transfer during evaporation in a 10.7 mm diameter smooth tube and a micro-fin tube are presented. The tubes were tested in the ranges of mass flux between 163 and 408 kg m{sup -2}s{sup -1} and heat flux between 2200 and 56 000 W m{sup -2}. The evaporation temperature was 6{sup o}C. Flow maps for both the tubes are plotted in the coordinates of mass flux and vapor quality. The relations of flow pattern and local heat transfer coefficient are discussed. The heat transfer coefficients for intermittent and annular flows in both the smooth tube and the micro-fin tube are shown to agree well with Gungor and Winterton's correlation with modified constants. (author)}
journal = {International Journal of Refrigeration}
issue = {6}
volume = {25}
journal type = {AC}
place = {United Kingdom}
year = {2002}
month = {Sep}
}