Evaluation of using solar ammonia absorption cooling system for major cities of the Middle East

Abstract

Solar energy is an important source of renewable energy. In this paper, renewable energy is used to cooling purpose in the Middle East. The cooling load is calculated for major cities of the Middle East. An ammonia absorption refrigeration cycle (AARC) is used for cooling purpose. Solar energy is used as the source of high temperature. Codes are written in EES software to analysis the solar cooling cycle. In this analysis, temperature, enthalpy, and other thermodynamic properties are obtained in different cases. Weather properties information such as winter and summer design temperatures of these cities are obtained from HVAC handbooks. The variation of temperature and cooling capacity in different months and different hours of a day is calculated and is shown in different figures. Cooling ability of solar cooling system varies in the different month and different hours. Furthermore, the influence of the efficiency of heat exchanger of solar cooling system on the coefficient of performance of cycle and the cooling capacity is investigated. In this paper, different climates with summer design dry bulb between 32ºC and 47ºC and solar heat gain between 840 w/m2 and 890 w/m2 are considered.