This study aims to determine the average value of hot water temperature and thermal efficiency that can be produced by using iron pipes as fluid collectors in Solar Energy Water Heater design system. Collector are made three variations 5, 7 9 which placed a wooden box with transparent glass cover on collector surface. The inside is lined styrofoam aluminum foil reduce heat loss environment. Dat...

This study analyzes the thermal performance of solar thermal energy using double-pass absorber plate in Sanandaj, Iran. To this end, a mathematical model was encoded according to the energy and exergy balance equations and solved by MATLAB software. Given the environmental conditions and radiation intensity of a winter day in Sanandaj, the effects of external parameters such as radiation intens...