دراسة استخدام الطاقة الشمسية في منظومات التثليج الامتصاصية لأغراض تكييف المباني

Abstract

The aim of this research is to study the ability to use solar energy for the purpose of cooling. A cooling absorption system of water-lithium bromide (LiBr/H2O) type (3 Ton) was used. This system depends on solar energy as a heat source to operate the system using solar collectors. A domestic place of (100 m²) was used to complete the study and the calculations of the system. For the implementation of the simulation of the system a mathematical model was applied, which includes the calculations of the collected energy and added energy of the auxiliary heater, the capacity of the cooling system, and the temperature of water used in different parts of the system. Also, the contribution of solar energy and collector efficiency was calculated. The system was tested during the summer months starting in May and ending by September. The system operation started at 8 o'clock AM and finished by 10 o'clock PM. The simulation of the mathematical model was implemented by the program (Fortran90). The study concludes that the application of solar collectors of an area of (60 m²) gives a contribution percentage of (70%) and this leads to a reduction in energy conception by a percentage of (70%) of the required energy to operate the system in the case of using a traditional air conditioning system during July only. As well as the determination of solar collector area per cooling ton was calculated. It was in the range of (20 m²)...