Please use this identifier to cite or link to this item:
Title: Solar heat pump drying and water heating in the tropics
Authors: Hawlader, M.N.A. 
Jahangeer, K.A. 
Keywords: Coefficient of performance
Heat pump
Solar fraction
Specific moisture extraction rate
Issue Date: May-2006
Source: Hawlader, M.N.A., Jahangeer, K.A. (2006-05). Solar heat pump drying and water heating in the tropics. Solar Energy 80 (5) : 492-499. ScholarBank@NUS Repository.
Abstract: In this study, the performance of a solar assisted heat pump dryer and water heater has been investigated. A simulation program has been developed. The predicted results are compared with those obtained from experiments under the meteorological conditions of Singapore. A coefficient of performance (COP) value of 7.0 for a compressor speed of 1800 rpm was observed. Maximum collector efficiencies of 0.86 and 0.7 have been found for evaporator-collector and air collector, respectively. A value of the specific moisture extraction rate (SMER) of 0.65 has been obtained for a load of 20 kg and a compressor speed of 1200 rpm. Results suggest that the total drying time of the product decreases with the increase in drying potential. Drying potential is directly proportional to the air flow rate, drying air temperature and inversely proportional to the air relative humidity. Three important parameters that affect the system performance are solar radiation, compressor speed and the total load placed in the drying chamber. Both SMER and COP decrease with increase in compressor speed. © 2005 Elsevier Ltd. All rights reserved.
Source Title: Solar Energy
ISSN: 0038092X
DOI: 10.1016/j.solener.2005.04.012
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Mar 5, 2018


checked on Mar 5, 2018

Page view(s)

checked on Feb 25, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.