Q1. A solar energy based ammonia absorption system is developed for cooling water at the rate of 10 kg/s. The water enters the evaporator at ambient temperature of Malaysia and gets lowered down to a range of 10 °C to 13 °C. The COP of the system is 0.5. The solar heat is added to the generator section of the refrigeration cycle through a solar collector. It is assumed that 80% of the incident solar energy is converted to usable heat. [You may assume any reasonable value for the unspecified parameters.
A) Calculate the areas of the solar collector needed for average solar irradiation (Watt/m”) in Malaysia. [You may obtain Malaysian solar irradiation data searching the internet and you should calculate the area for a range of values of solar irradiation]
B) Calculate the areas of the collector needed if COP is dropped to 0.2, with the same cooling load and similar solar irradiation Discuss your findings.
