PERFORMANCE OF A SOLAR POWERED ABSORPTION AIR CONDITIONING SYSTEM WITH PARTITIONED HOT WATER STORAGE TANK

摘要

This paper reports on the performance of a solar powered absorption air conditioning system with the partitioned hot water storage tank. The partition of the storage tank is achieved by dividing it into two parts, with the upper part having a volume of about one-fourth of the entire tank. The performance of this modified system is presented and compared with the conventional whole-tank system designs (without partition in the storage tank). Also, theoretical analysis of temperature stratification inside the storage tank has been carried out by using a modified one-dimensional multinode approach, taking into account of the axial heat conduction between nodes. And a generalized discretization equation has been derived which could be solved by the method of Tridiagonal-Matrix Algorithm (TDMA). The study reveals that, the system operating in partitioned mode can realize solar cooling effect nearly two hours earlier, and thereby can attain a total solar cooling COP_(system) of about 0.07, which is 15 % higher than with traditional whole-tank mode.