الملخص

Abstract The performance of a proposed air conditioning system under the weather of Mosul city / Iraq has been studied and compared with that of the vapour compression system operating at the same condition. For the purpose of reducing the cost of the proposed system, a local desiccant material called local silica gel was used as an alternative to the regular density silica gel which is usually used in the enthalpy wheels. This material was extracted from Ninivite rocks available at south of Mosul city / Iraq. Some of the Physical and thermal properties of this material were experimentally determined and compared with those of the regular density silica gel.