Design a solar collector for VAR system with 1TR capacity at its maximum COP

Abstract

Now a day’s industrialization, globalization, human comfort increases use of energy drastically. It leads to deficiency of energy as
well as increase in its cost. Alternate source of energy which is available at low cost and abundant in nature is the prime focus for the
researcher. This paper is prepared with aim to drive a vapor absorption refrigeration (VAR) system of a unit capacity through solar
energy. VAR system can be drive through waste heat or solar energy. For VAR system R717 (Ammonia) is used as a refrigerant. In
this paper we had inscribed the calculation of COP for the system at different temperature of absorber and generator. Effectiveness of
heat exchanger and generator temperature are the most affecting parameter to the COP of the system. And at the optimum value of
COP required size of the collector is calculated. On the basis of series of numerous iteration carried out by changing generator
temperature and effectiveness of heat exchanger (HE), it is concluded that with the increasing generator temperature, COP of the
system increase up to some limit and after that it decreases. With increasing in effectiveness of heat exchanger COP increases.