A comparative study of shell-side condensation on integral-fin tubes with R-114 and R-236ea Conference Paper uri icon


  • A test facility was constructed to perform shell-side condensation testing, and test results are presented for CFC-114 and HFC-236ea usingaplain, a1024 fpm, and a 1575 fpm tube surface. Condensation coefficient data are presented for both saturated and superheated refrigerant vapor on a single test tube. The heat flux range for the data was 15,000 to 40,000 W/m 2 (4.8 10 3 Btu/hft 2-12.7 10 3 Btu/hft 2) at a saturation temperature of 40C (104F). The results of this study show that the two refrigerants produced similar performance characteristics in shell-side condensation on integral-fpm tubes. The data also show that the 1024 Jpm tube performed slightly better with R-236ea than with R-114. The 1575 fpm tube demonstrated the same trend in the higher heat flux range. The shell-side condensation heat transfer coefficient results for super-heated vapor were similar to the saturated results. Specifically, the superheated vapor data for the finned tubes were within 7% of the saturated vapor results.

published proceedings

  • ASHRAE Transactions

author list (cited authors)

  • Huebsch, W. W., & Pate, M. B.

complete list of authors

  • Huebsch, WW||Pate, MB

publication date

  • May 2004