Performance of Generator of Absorption Refrigerating Machine Powered by Hot Water

Abstract

For 70 kW generator of absorption refrigerating machine powered by the hot water, lifted liquid rate of the bubble lift pump has a maximum value at some vapor flow rate of refrigerant and hot water inlet temperature. This is in agreement with results of small size bubble lift pump. Maximum lifted liquid rate G₀ is correlated by the equation ;G₀ = 5, 000σ^1.5, where σ is the degree of submergence. In this case, diameter of pump tube was 41.6mm, and length of it were 1,300 and 1,500mm. The range of hot water inlet temperature was 78 - 100°C.
Multitube heat flux of first generator is about two times that of second generator at the same superheat.