NDLI: Employing exergy-optimized pin fins in the design of an absorber in a solar air heather

Content Provider	Springer Nature Link
Author	Nwosu, N. P.
Copyright Year	2009
Abstract	Heat transfer augmentation features for the improvement of heat transfer from the absorber-plate of a solar air heater to the working fluid are mostly fins however these features also increase pressure drop in the flow channel. The exergy optimization philosophy is adopted in the fin sizing for this air heating application; this optimization philosophy ensures that the maximum quantity of heat is transferred by the fins while generating the least entropy in the system thus conserving exergy. Results indicate that the higher the fin efficiency, the higher the heat conversion and delivery potential. Given an optimum fin length (efficiency) and superior coating absorptive vigour, useful energy losses in the heater can be minimized. Some important observations relevant in design are made.
Starting Page	248
Ending Page	253
Page Count	6
File Format	PDF
ISSN	0003701X
Journal	Applied Solar Energy
Volume Number	45
Issue Number	4
e-ISSN	19349424
Language	English
Publisher	Allerton Press, Inc.
Publisher Date	2010-03-02
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Power Electronics, Electrical Machines and Networks
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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Employing exergy-optimized pin fins in the design of an absorber in a solar air heather