Effects of depolymerization rate on system performance of paraldehyde chemical heat pump

The paraldehyde chemical heat pump system combines the effects of a chemica l reaction and a vapor-compression. The paraldehyde chemical heat pump is u sed as a cooling system. This study is on the effects of the paraldehyde de polymerization rate on the cooling rate, the coefficient of performance (CO P). and the required amount of catalyst in the endothermic reactor. An incr ease in the amount of paraldehyde reacted in the endothermic reactor result s in improvement in the COP and the cooling rate, but leads to an increase in the required amount of catalyst weight. The required amount of catalyst is 0.4 kg, having the effectiveness factor of 0.6, for the heat pump system with COP of 6 and cooling rate of 3.8-4.0 kW, for a flow rate of 4.0 g s(- 1) in the cycle.