Question

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

asked Mar 22, 2021 79.3k views

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.