Authors

Mokhtar Noori Saddam , Mushtaq Ismael Hasan

DOI: 10.54646/bijsshr.012

Abstract

This research focuses on the design, modeling, and simulation of absorption solar air-conditioning systems. Key performance parameters are identified and optimized for maximum efficiency, and the system was simulated using climatic conditions in Thi-Qar, Iraq, providing a good trend for the system to meet domestic airconditioning needs, which has a direct effect on the angle of incidence of solar radiation. The results of solar collectors and their effective performance in saving energy and improving system efficiency were discussed, where the work was performed on a solar heater with an evacuated tube with an area of 1.8 m2 . The rate of emitted solar radiation was equal to 1000 W/m2 . The average heat load of the solar heater was provided at a rate of 0.190 kW to 1.291 kW. The experiment in this paper was conducted in two stages. First, the solar heater was connected in the first case before the compressor. The reported results showed an increase in energy savings with average heater temperatures rising to 25% to 55% of the total energy consumed in the cooling cycle per day. The gas was heated to temperatures ranging from 45 to 65◦C, while the cooling rate was constant at 3.43. Second, the solar heater was connected after the compressor in the second case. The solar heater provided a significant improvement in system performance factor with an average of 5.1 to 13 and energy amount ranging from 15% to 24% of the total energy consumed. It is noted that the cooling load improved from 3.43 to 5.54 kW. The rate of thermal heating in the second case was from 100 to 160◦C gradually. Finally, it is noted that the second case has a much greater service advantage and economic feasibility than the first, and the system has improved as a result of improving the amount of cooling load while reducing energy consumption and increasing the overall performance of the system factor resulting from the improvement of the special conditions of the coolant used in the (R-410a) cycle.

Keywords

Solar hybrid air-conditioning system, solar collectors, solar powered AC