Thermal Efficiency of Double Pass Solar Collector with Longitudinal Fins Absorbers
Ahmad Fudholi, Kamaruzzaman Sopian, Mohd Hafidz Ruslan, Mohd. Yusof Othman and Muhammad Yahya
DOI : 10.3844/ajassp.2011.254.260
American Journal of Applied Sciences
Volume 8, Issue 3
Problem statement: One of the most important components of a solar energy system is the solar collector. The performances of double-pass solar collector with longitudinal fins absorbers are analyzed. Approach: The study involves a theoretical study to investigate the effect of mass flow rate, number and height of fins on efficiency, which involves steady-state energy balance equations on the longitudinal fins absorber of solar collectors. The theoretical solution procedure of the energy equations uses a matrix inversion method and making some algebraic rearrangements. Results: The collector efficiency increases as the number and height of fins increases. For a mass flow rate 0.02- 0.1kg/s, the double-pass solar collectors are efficiency about 36-73% in upper fins (type I), 37-75% in lower fins (type II) and 46-74% in upper and lower fins (type III). Conclusion: The efficiency of the collector is strongly dependent on the flow rate, efficiency increase is about 35%.
© 2011 Ahmad Fudholi, Kamaruzzaman Sopian, Mohd Hafidz Ruslan, Mohd. Yusof Othman and Muhammad Yahya. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.