%0 Journal Article %T THERMAL PERFORMANCE EVALUATION OF A PROPOSED POINT-FOCUS SOLAR COLLECTOR FOR LOW POWER APPLICATIONS %J Iranian Journal of Science and Technology Transactions of Mechanical Engineering %I Shiraz University %Z 2228-6187 %D 2014 %\ 05/01/2014 %V 38 %N 38M1+ %P 263-268 %! THERMAL PERFORMANCE EVALUATION OF A PROPOSED POINT-FOCUS SOLAR COLLECTOR FOR LOW POWER APPLICATIONS %K Solar energy %K point-focus solar collector %K low power application %K thermal performance %R 10.22099/ijstm.2014.1971 %X In this study, thermal performance of a proposed point-focus solar collector for lowpower applications was estimated under different operating variables. For this purpose, theoreticalanalysis was employed with varying relevant parameters, using a set of thermodynamics andenergy equations, i.e., ambient temperature, beam solar insolation, wind speed, wind incidenceangle and wall temperature of the absorber. The results show decreasing trend of the windincidence angle along with increasing the convective heat loss coefficient as the highest relatedvalues obtained under head-on wind flow, but the wall temperature of the absorber exertsnegligible influence. The maximum thermal efficiency of 79.68% was obtained in August with theside-on wind flow of 4.9􀝉⁄􀝏 and an ambient temperature of 29.2􀔨 when the absorber walltemperature has a minimum value of 150􀔨. %U https://ijstm.shirazu.ac.ir/article_1971_58d8911143613aa280e25ec8be652cd5.pdf