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Title: Boiling heat transfer of refrigerant R-113 in a small-diameter, horizontal tube

Abstract

Results of a study of boiling heat transfer from refrigerant R-113 in a small-diameter (2.92-mm) tube are reported. Local heat transfer coefficients over a range of heat fluxes, mass fluxes, and equilibrium mass qualities were measured. The measured coefficients were used to evaluate eight different heat transfer correlations, some of which have been developed specifically for refrigerants. High heat fluxes and low flow rates are inherent in small channels, and this combination results in high boiling numbers. The high boiling number of the collected data shows that the nucleation mechanism was dominant. As a result, the two-phase correlations that predicted this dominance also predicted the data best if they also properly modeled the physical parameters. The correlations of Lazarek and Black and of Shah, as modified in this study, predicted the data very well. It is also shown that a simple form, suggested by Stephan and Abdelsalam for nucleate boiling, correlates the data equally well. This study is part of a research program in multiphase flow and heat transfer, with the overall objective of developing validated design correlations and predictive methods that will facilitate the design and optimization of compact heat exchangers for use with environmentally acceptable alternatives for chlorofluorocarbonmore » (CFC) refrigerants and refrigerant mixtures.« less

Authors:
; ;  [1];  [2]
+ Show Author Affiliations
  1. (Argonne National Lab., IL (United States))
  2. (Illinois Univ., Chicago, IL (United States). Dept. of Mechanical Engineering)
Publication Date:
Research Org.:
Argonne National Lab., IL (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
7226454
Report Number(s):
ANL-92/12
ON: DE93002351
DOE Contract Number:
W-31109-ENG-38
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 54 ENVIRONMENTAL SCIENCES; CHLOROFLUOROCARBONS; MATERIAL SUBSTITUTION; REFRIGERANTS; HEAT TRANSFER; TWO-PHASE FLOW; BOILING; HEAT EXCHANGERS; HEAT FLUX; MASS TRANSFER; TESTING; TUBES; ENERGY TRANSFER; FLUID FLOW; FLUIDS; ORGANIC CHLORINE COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC FLUORINE COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; PHASE TRANSFORMATIONS; WORKING FLUIDS; 420400* - Engineering- Heat Transfer & Fluid Flow; 540120 - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-)

Citation Formats

Wambsganss, M.W., Jendrzejczyk, J.A., Tran, T.N., and France, D.M. Boiling heat transfer of refrigerant R-113 in a small-diameter, horizontal tube. United States: N. p., 1992. Web. doi:10.2172/7226454.
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Wambsganss, M.W., Jendrzejczyk, J.A., Tran, T.N., & France, D.M. Boiling heat transfer of refrigerant R-113 in a small-diameter, horizontal tube. United States. doi:10.2172/7226454.
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Wambsganss, M.W., Jendrzejczyk, J.A., Tran, T.N., and France, D.M. Wed . "Boiling heat transfer of refrigerant R-113 in a small-diameter, horizontal tube". United States. doi:10.2172/7226454. https://www.osti.gov/servlets/purl/7226454.
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@article{osti_7226454,
title = {Boiling heat transfer of refrigerant R-113 in a small-diameter, horizontal tube},
author = {Wambsganss, M.W. and Jendrzejczyk, J.A. and Tran, T.N. and France, D.M.},
abstractNote = {Results of a study of boiling heat transfer from refrigerant R-113 in a small-diameter (2.92-mm) tube are reported. Local heat transfer coefficients over a range of heat fluxes, mass fluxes, and equilibrium mass qualities were measured. The measured coefficients were used to evaluate eight different heat transfer correlations, some of which have been developed specifically for refrigerants. High heat fluxes and low flow rates are inherent in small channels, and this combination results in high boiling numbers. The high boiling number of the collected data shows that the nucleation mechanism was dominant. As a result, the two-phase correlations that predicted this dominance also predicted the data best if they also properly modeled the physical parameters. The correlations of Lazarek and Black and of Shah, as modified in this study, predicted the data very well. It is also shown that a simple form, suggested by Stephan and Abdelsalam for nucleate boiling, correlates the data equally well. This study is part of a research program in multiphase flow and heat transfer, with the overall objective of developing validated design correlations and predictive methods that will facilitate the design and optimization of compact heat exchangers for use with environmentally acceptable alternatives for chlorofluorocarbon (CFC) refrigerants and refrigerant mixtures.},
doi = {10.2172/7226454},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}
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Technical Report:
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DOI:  10.2172/7226454
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  • ; ; ; ...
    Results of a study of boiling heat transfer from refrigerant R-113 in a small-diameter (2.92-mm) tube are reported. Local heat transfer coefficients over a range of heat fluxes, mass fluxes, and equilibrium mass qualities were measured. The measured coefficients were used to evaluate eight different heat transfer correlations, some of which have been developed specifically for refrigerants. High heat fluxes and low flow rates are inherent in small channels, and this combination results in high boiling numbers. The high boiling number of the collected data shows that the nucleation mechanism was dominant. As a result, the two-phase correlations that predictedmore » this dominance also predicted the data best if they also properly modeled the physical parameters. The correlations of Lazarek and Black and of Shah, as modified in this study, predicted the data very well. It is also shown that a simple form, suggested by Stephan and Abdelsalam for nucleate boiling, correlates the data equally well. This study is part of a research program in multiphase flow and heat transfer, with the overall objective of developing validated design correlations and predictive methods that will facilitate the design and optimization of compact heat exchangers for use with environmentally acceptable alternatives for chlorofluorocarbon (CFC) refrigerants and refrigerant mixtures.« less

  • The two-phase pressure drop and heat transfer characteristics of R-114 flowing in a horizontal tube were studied. Flow regime studies were also performed as a part of this effort. Boiling temperature was varied from 100 to 250/sup 0/F and mass flux was varied from 0.12 to 3.4 x 10/sup 6/ lbm/hr-sq ft. No single method for predicting flow regime was found to be accurate over the range of conditions studied. The method proposed by Knowles was the best available for determining the stratified and intermittent flow regimes, and the analysis of Quandt was the most reliable in predicting the annularmore » flow regime. Four correlations gave promising results when compared to the experimental, frictional pressure drop data. The Martinelli-Nelson correlation agreed fairly well with all of the data obtained. The degree of data scatter was, however, fairly large. Two correlations proposed by Chisolm which include a mass flux effect gave slightly better results when compared with the experimental data. The correlation proposed by Baroczy, generally, gave good results when applied to the medium-to-high mass flux data. The experimental heat transfer coefficient data could not be predicted accurately by a single correlation. The original Chen correlation offered the best agreement of any correlation considered. The degree of agreement between experimental data and correlation was improved by applying the original Chen correlation to the low mass flux data and Jallouk's modification to the remaining data.« less

  • ; ; ; ... - Int. J. Multiphase Flow
    Two-phase pressure drop, boiling heat transfer, and critical heat flux to water were studied in a small horizontal tube of 2.98-mm inside diameter and 0.91-m heated length. Experiments were performed at a system pressure of 200 kPa, mass fluxes of 50-200 kg/m{sup 2}s, and inlet temperatures from ambient to 80 C. Experimental results and comparisons with state-of-the-art predictive correlations are presented. Modifications were made to the Chisholm two-phase multiplier correlation and to the Argonne National Laboratory small-channel boiling heat transfer correlation to better predict the experimental data of the present study.

  • ; ; ; ... - Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States)
    Results of a study on boiling heat transfer of refrigerant R-113 in a small-diameter (2.92 mm) tube are reported. Local heat transfer coefficients are measured for a range of heat flux (8.8-90.75 kW/m[sup 2]), mass flux (50-300 kg/m[sup 2]s), and equilibrium mass quality (0-0.9). The measured coefficients are used to evaluate 10 different heat transfer correlations, some of which have been developed specifically for refrigerants. High heat fluxes and low mass fluxes are inherent in small channels, and this combination results in high boiling numbers. In addition, based on a flow pattern map developed from adiabatic experiments with air-water mixtures,more » it has been shown that small-diameter channels produce a slug flow pattern over a large range of parameters when compared with larger-diameter channels. The effects of high boiling number and slug flow pattern lead to domination by a nucleation mechanism. As a result, the two-phase correlations that predicted this dominance also predicted the data the best when they properly modeled the physical parameters. The correlation of Lazarek and Black (1982) predicted the data very well. It is also shown that a simple form, suggested by Stephan and Abdelsalam (1980) for nucleate pool boiling, correlates the data equally well; both correlations are within a mean deviation of less than 13 percent. Results are applicable to boiling in compact heat exchangers. 28 refs., 11 figs., 3 tabs.« less

  • ;
    Mixture effects were studied on horizontal convective heat transfer for both nonazeotropic, R22/R114, and azeotropic, R12/R152a, mixtures. A test facility was designed, constructed, and operated to simulate evaporators in heat pump and refrigeration systems. More than 3000 local two-phase heat transfer coefficients were obtained under steady state condition for annular flow at a reduced pressure of 0.08. The results indicated that there were two distant heat transfer regions; partial boiling and convective evaporation. In the partial boiling region, heat transfer coefficients were strongly dependent upon heat flux; the heat flux dependence disappeared for high vapor qualities. A full suppression ofmore » nucleate boiling was observed for both pure and mixed refrigerants. For a given heat and mass flux, nucleate boiling was suppressed at lower qualities for mixtures than for pure fluids. The unique phenomenon of loss of available superheat for mixtures caused nucleate boiling to be suppressed at lower qualities. An analytical study was performed to predict the transition quality by utilizing a theory of onset of nuclear boiling and phase equilibrium data. The prediction agreed very well with the present data. 77 refs., 62 figs., 14 tabs.« less