Published 8 issues per year
ISSN Print: 1065-5131
ISSN Online: 1563-5074
IF:
2.3
5-Year IF:
1.8
Immediacy Index:
0.2
Eigenfactor:
0.00037
JCI:
0.6
SJR:
0.433
SNIP:
0.593
CiteScore™::
4.3
H-Index:
35
Indexed in
High Performance Augmentations for Refrigeration System Evaporators and Condensers
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ABSTRACT
Parametric studies were undertaken for heat transfer augmentations utilized in evaporators and condensers in refrigeration, air-conditioning and heat pump systems. For chilled water flowing inside tubes, ribbed tubes are shown to provide the best thermal to hydraulic performance ratio. For chilled water flowing over tube bundles, external integral low finned tubes are shown to be very advantageous relative to plain tubes. For refrigerant R 134a, the simulations show that certain microfinned tube geometries are superior for intube evaporation and condensation. For flooded ammonia chillers, external low finned tubes for augmenting boiling and internal fins for augmenting heat transfer to the chilled water are shown to be very effective.
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Eckert E.R.G., Goldstein R.J., Ibele W.E., Patankar S.V., Simon T.W., Strykowski P.J., Tamma K.K., Kuehn T.H., Bar-Cohen A., Heberlein J.V.R., Hofeldt D.L., Davidson J.H., Bischof J., Kulacki F., Heat transfer—a review of 1994 literature, International Journal of Heat and Mass Transfer, 40, 16, 1997. Crossref
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Thome John R., Flow Boiling Inside Microfin Tubes: Recent Results and Design Methods, in Heat Transfer Enhancement of Heat Exchangers, 1999. Crossref
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Imdad Aaqib, Ali Hassan, Farooq Haroon, Ali Hafiz, Effect of condensate flow rate, surface tension, density and vapor velocity on condensate retention of wire wrapped tubes, Thermal Science, 26, 1 Part B, 2022. Crossref