Abstract
Artificial surface roughness is used to increase the thermal performance of a solar air heater. The intent is to improve heat transfer between the absorber plate and air flowing through the duct. However, roughness also increases the force required to flow air through the duct, which leads to an increase in the pumping power required in the duct, thus resulting in a decrease in the effective or overall efficiency of the solar air heater duct. In this article effective efficiency of various geometries used in solar air heater are computed by the use of heat transfer and friction factor experimental correlations. A comparison is also presented for the selection of optimum roughness geometry.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Distributed Generation & Alternative Energy Journal
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.