Focuses on evaluating the heat transfer performance of refrigerant R123 in the spray evaporation environment for pure refrigerant and for the case of lubricant addition. Tests were conducted with triangular-pitch tube bundles made from enhanced boiling tubes, enhanced condensation tubes, and plain-surface tubes. A second enhanced boiling surface bundle, made with a square-pitch tube alignment, was also tested so a comparison could be made between the square- and triangular-pitch geometries. In addition to pure refrigerant work, experiments were performed with small concentrations of a 305 SUS naphthenic mineral oil to evaluate its effect on falling-film heat transfer performance. Two different refrigerant supply rates were used in this work so the effects of film-feed supply rate could be interpreted from the data. Presents the results obtained from the testing.
KEYWORDS: year 1996, heat flow, refrigerants, R123, performance, testing, chillers, evaporators, lubricants, heat transfer coefficient, comparing, heat exchangers
Citation: ASHRAE Trans. 1996, Vol.102, Part 2, Paper number 4008 (RP-668), 259-272, 20 figs., 7 tabs., refs.
Product Details
- Published:
- 1996
- File Size:
- 1 file , 1.8 MB
- Product Code(s):
- D-16567
