Prediction of cooling-coil performance under condensing conditions

The possibility of predicting chilled-water cooling-coil performance under condensing conditions using dry-surface heat transfer correlations is examined. Experimentally determined wet-surface Nusselt number data are presented and compared with dry-surface data obtained from the same cooling coils....

Full description

Saved in:
Bibliographic Details
Published in:The International journal of heat and fluid flow 1993-12, Vol.14 (4), p.391-400
Main Authors: Mirth, D.R., Ramadhyani, S.
Format: Article
Language:English
Subjects:
Applied sciences
condensation
cooling coil
Devices using thermal energy
Energy
Energy. Thermal use of fuels
Exact sciences and technology
fin tube heat exchanger
Heat exchangers (included heat transformers, condensers, cooling towers)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The possibility of predicting chilled-water cooling-coil performance under condensing conditions using dry-surface heat transfer correlations is examined. Experimentally determined wet-surface Nusselt number data are presented and compared with dry-surface data obtained from the same cooling coils. The wet-surface Nusselt numbers show considerable scatter; some of the results are higher than the corresponding dry-surface correlations, while others are lower. A sensitivity analysis is presented to illustrate that the wet-surface Nusselt numbers are very sensitive to the uncertainties in the measured inlet dew-point temperature and the measured heat transfer rate. It is demonstrated that the use of dry-surface Nusselt number correlations in a coil model result in wet-surface heat transfer predictions that are generally within 5 percent of the experimentally determined value.
ISSN:0142-727X
1879-2278
DOI:10.1016/0142-727X(93)90013-D