Performance enhancement of free convective solar air heater by pin protrusions on the absorber

• Main Authors: Gilani, S.E., Al-Kayiem, H.H., Woldemicheal, D.E., Gilani, S.I.
• Format: Article
• Published: Elsevier Ltd 2017
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019914650&doi=10.1016%2fj.solener.2017.05.038&partnerID=40&md5=1034381d4b68e63dfb862dfb7dff7919; http://eprints.utp.edu.my/19738/

This paper is aimed to present enhancing technique of the low performing free convective solar air heaters. In order to increase the efficiency of this process, small sized turbulators have been used on the absorber plate that is breaking the viscous layer/sub-layer of the air flowing over the surfa...