dc.contributor.author |
Christians-Lupi, M.
|
|
dc.contributor.author |
Liebenberg, L.
|
|
dc.contributor.author |
Van Rooyen, Eugene
|
|
dc.contributor.upauthor |
Meyer, Josua P.
|
|
dc.date.accessioned |
2014-07-18T09:01:09Z |
|
dc.date.available |
2014-07-18T09:01:09Z |
|
dc.date.issued |
2007 |
|
dc.description.abstract |
Paper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007. |
en_US |
dc.description.abstract |
This paper presents a study of probabilistic flow regime-based heat transfer coefficients during refrigerant condensation inside a smooth tube. Experimental work was conducted using refrigerant R-22, at an average saturation temperature of 40oC, with mass fluxes ranging from 250- 650 kg/m2s, and with test section inlet vapor qualities
ranging from 0.65 down to 0.10. These tests conditions represent mostly Intermittent flow, with some data points in the Annular and Stratified-wavy flow regimes. Utilizing time fraction data gathered in this experimental setup, a new time fraction-corrected flow regime-based heat transfer correlation, heavily based on the Thome et al. (J.R. Thome, J. El Hajal and A. Cavallini, Condensation in horizontal
tubes, part 2: New heat transfer model based on flow regimes, International Journal of Heat and Mass Transfer, 46:3365-3387, 2003) correlation was developed for use in the Intermittent flow regime. The modified correlation predicted the experimental data with a mean absolute deviation of 10%. |
en_US |
dc.description.librarian |
cs2014 |
en_US |
dc.format.extent |
6 pages |
en_US |
dc.format.medium |
PDF |
en_US |
dc.identifier.citation |
Christians-Lupi, M, Van Rooyen, E, Liebenberg, L & Meyer, JP 2007, 'Flow pattern-based heat transfer correlation for condensing R-22 in a smooth tube', Paper presented to the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July 2007. |
en_US |
dc.identifier.isbn |
9781868546435 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/40878 |
|
dc.language.iso |
en |
en_US |
dc.publisher |
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics |
en_US |
dc.relation.ispartof |
HEFAT 2007 |
|
dc.rights |
University of Pretoria |
en_US |
dc.rights.uri |
University of Pretoria |
en_US |
dc.subject |
Flow regime-based heat transfer coefficients |
en_US |
dc.subject |
Refrigerant condensation inside a smooth tube |
en_US |
dc.subject |
Intermittent flow regime |
en_US |
dc.subject |
Annular and Stratified-wavy flow regimes |
en_US |
dc.title |
Flow pattern-based heat transfer correlation for condensing R-22 in a smooth tube |
en_US |
dc.type |
Presentation |
en_US |