Analysis of radial fin assembly heat transfer with dehumidification
Book
·
OSTI ID:452143
- Univ. of South Florida, Tampa, FL (United States). Dept. of Mechanical Engineering
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 published for rectangular fin under humid condition 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.
- OSTI ID:
- 452143
- Report Number(s):
- CONF-960805--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Heat transfer in a finned dehumidifier coil under partially wet condition
Modeling of partially wet radial fin assembly used as a dehumidifier coil
Heat and mass transfer performances on plate fin and tube heat exchangers with dehumidification
Conference
·
Thu Jul 01 00:00:00 EDT 1999
·
OSTI ID:20026730
Modeling of partially wet radial fin assembly used as a dehumidifier coil
Conference
·
Wed Jul 01 00:00:00 EDT 1998
·
OSTI ID:20000208
Heat and mass transfer performances on plate fin and tube heat exchangers with dehumidification
Journal Article
·
Sat Sep 01 00:00:00 EDT 1990
· Heat Transfer - Japanese Research; (USA)
·
OSTI ID:5885315