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Abstract— In this study, the influence of the duct material and insulation on the air heat gain is experimentally investigated. The objective of this study is to present the results of experimental evaluating of the heat gained by the air that flows through a square duct using several materials and insulations. The materials were galvanized steel d...
Abstract-This research includes the evaluation of economic feasibilities based on the Iraqi’s market cost by using three different types of central heating systems in a residential villa located in Duhok city / Iraq. It also compares between modern and conventional central heating systems. A life cycle cost analysis based on detailed heating and op...