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Simulation of a solar absorption cooling system in Dohuk city of the Northern Iraq

ABSTRACT Since the last decade, the demand on electrical power has been increased rapidly in the Northern Iraq. This was due to the rapid development of the cities of the region after 2003. The power supply in this region only depends on fossil fuel and natural gas which in turn causes an increase in CO2 emissions, global warming, and other environmental problems. The peak of the electricity consumption in the Northern Iraq is during the end of spring until October owing to the hot weather conditions in this period. The aim of this work is to examine the feasibility of an absorption cooling system in a hot and dry region. For this purpose, this study was carried out using the climate conditions of Duhok city located in the North of Iraq by using the TRNSYS17 programs. The system consisted of single-effect solar-powered lithium bromide–water chiller absorption with 35.17 kW cooling capacity, which comprises an evacuated tube solar collector with an aperture space of 95 m2, collectors slope 30° from the horizontal. The capacity storage hot water storage tank is 3 m3. The air conditioning provided system supplied floor space of 270 m2. The average coefficient of performance of absorption chiller was found as 0.63.