Use a schematic diagram to elaborate the working principle of a simple vapor-absorption cooling/refrigeration system. Compare the working principle and advantages/disadvantages of vapor-compression air conditioner with a solar-powered absorption air conditioner. How do refrigerant-carrier NH3- H2O (or H2O-LiBr) operate/function? Saturated vapor ammonia leaves the generator to 50°C, and saturated vapor leaves the evaporator at 10°C. If 3,000 kJ of heat is required in the generator (solar collector) per kg of ammonia vapor generated, determine the overall performance of this system

Fig: 1