Preliminary Investigation of the Economics of the Stratified Integrated Collector – Storage Domestic Hot Water System in Iraq


Abstract:This research aims at investigating the economics of domestic solar hot watersystems in order to promote the use of such systems in Iraq in spite of the lowprices of the natural energy sources. The integrated collector storage system,suggested by Kahwaji, is adopted in this study due to its simplicity and goodthermal performance especially with respect to nighttime heat loss.Thermal and economics analysis indicated that the system can providesavings of 49 %, 56 %, 35 % and 58 % in the domestic hot water energyexpenditure in the environment of the cities of Mosul, Baghdad, Basrah and Ratbarespectively when 20 % inflation rate for the price of electricity and a system lifetime of 20 years are used.