NDLI: Analysis of radial fin assembly heat transfer with dehumidification

Content Provider	IEEE Xplore Digital Library
Author	Rosario, L. Rahman, M.M.
Copyright Year	1996
Description	Author affiliation: Dept. of Mech. Eng., Univ. of South Florida, Tampa, FL, USA (Rosario, L.)
Abstract	The aim of this paper is the analysis of heat transfer in a radial fin assembly during the process of dehumidification. An individual finned tube geometry is a reasonable representation of heat exchangers used in air conditioning. The condensation process involves both heat and mass transfer and the cooling takes place by the removal of sensible as well as latent heat. The ratio of sensible to total heat is an important quantity that defines the heat transfer process during a dehumidifier operation. A one-dimensional model for heat transfer in the fin and the heat exchanger block is developed to study the effects of condensation on the fin surface. The combined heat and mass transfer process is modeled by incorporating the ratio of sensible to total heat in the formulation. The augmentation of heat transfer due to fin was established by comparing heat transfer rate with and without fins under the same operating conditions. Numerical calculations were carried out to study the effects of relative humidity and dry bulb temperature of the incoming air, and cold fluid temperature inside the coil on the performance of the heat exchanger. Results were compared to those under dry conditions, wherever appropriate. Comparison between results and those published for rectangular fin under humid conditions showed excellent agreement when the present model was used to compute that limiting condition. It was found that the heat transfer rate increased with increment in both dry bulb temperature and relative humidity of the air. The augmentation factor, however, decreased with increment in relative humidity and the dry bulb temperature.
Starting Page	1494
Ending Page	1499
File Size	527621
Page Count	6
File Format	PDF
ISBN	0780335473
ISSN	10893547
DOI	10.1109/IECEC.1996.553949
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-08-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Assembly Heat transfer Temperature sensors Humidity Coils Cooling Thermal conductivity Air conditioning Bismuth Heat engines
Content Type	Text
Resource Type	Article

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