%0 Journal Article %T Preliminary Investigation of the Economics of the Stratified Integrated Collector – Storage Domestic Hot Water System in Iraq %J Al-Rafidain Engineering Journal (AREJ) %I College of Engineering, University of Mosul, IRAQ %Z 1813-0526 %A S. Al dabbagh, Maan %A Ghalib Y. kahwaji, Dr. %D 2005 %\ 06/28/2005 %V 13 %N 2 %P 29-38 %! Preliminary Investigation of the Economics of the Stratified Integrated Collector – Storage Domestic Hot Water System in Iraq %R 10.33899/rengj.2005.45604 %X Abstract: This research aims at investigating the economics of domestic solar hot water systems in order to promote the use of such systems in Iraq in spite of the low prices of the natural energy sources. The integrated collector storage system, suggested by Kahwaji, is adopted in this study due to its simplicity and good thermal performance especially with respect to nighttime heat loss. Thermal and economics analysis indicated that the system can provide savings of 49 %, 56 %, 35 % and 58 % in the domestic hot water energy expenditure in the environment of the cities of Mosul, Baghdad, Basrah and Ratba respectively when 20 % inflation rate for the price of electricity and a system life time of 20 years are used. %U https://rengj.mosuljournals.com/article_45604_8ed66b3e5ec1ff12e1beeb45a847e8ea.pdf