DEVELOPMENT AND TESTING OF A FORCED CONVECTION SOLAR AIR HEATER INTEGRATED WITH CIRCULAR DUCT ABSORBER PLATE

Author’s Name : B Karthik

Volume 01 Issue 03  Year 2014  ISSN No:  2349-3860  Page no: 7- 10

Abstract – This paper presents the study of heat transfer in a solar air heater by using new design of solar collector. The collector efficiency in a single pass of solar air heater with using fins with shapes like circular duct attached under the absorbing plate has been investigated experimentally. Due to adding the fins to the interior of an absorber plate, the desirable effect of increasing the heat transfer coefficient compensates for the undesirable effect of decreasing the driving force (temperature difference) of heat transfer, while the attached fins provide an enlarged heat transfer area. In this study, the absorbing plate of solar collector is attached with fins for further improved performance. The improvements of collector efficiencies in the single pass solar air heaters with fins attached.

Keywords – Solar collector, With fins, Single pass, Circular duct