![]() ![]() ![]() ![]() There was an increase in the isothermal layers in the storage tank due to a rise in collector efficiency. The maximum auxiliary energy was used during the cold months are (2980 MJ/month) in Baghdad and (2607 MJ/month) in Basrah. Results present that the system could provide hot water demand in Baghdad (67–81% and 39–62%) and Basrah (69–82% and 49–66%) in summer and winter, respectively, by using solar energy. The model investigated in many aspects, such as provide the demand of hot water for a family (ten persons) by using 10 m 2 of flat plate collector, stratification effect in a storage tank on the collector's thermal efficiency, and effect of hot domestic water different consumption on solar thermal system performance. The study was conducted in two different regions in Iraq (Baghdad and Basrah). The TRNSYS model comprises component (collectors, controls, storage tanks, circulation pump, solar radiation processor, printer, equations, and integrators). The TRNSYS dynamic simulation program was chosen as the primary research tool. This research presents the modeling and simulating of forced circulation solar thermal system for domestic hot water production in Iraq. This study aimed towards an essential subject in the field of solar energy. ![]()
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