Absorption refrigerators and chiller / heaters using both low-temperature regenerators and low-temperature regenerators for waste heat recovery

摘要

PURPOSE:To improve a coefficient of performance and to save fuel to be consumed by a high temperature regenerator in an absorption refrigerator and water cooler-heater. CONSTITUTION:An exhaust heat recovering low temperature regenerator 62 is provided between a low temperature regenerator 2 and a high temperature regenerator 64. The regenerator 64 is connected to the regenerator 62 through a combustion exhaust gas duct 66 to introduce combustion exhaust gas used to concentrate absorption liquid to the regenerator 62, thereby concentrating part of dilute solution fed from an absorber 7. Refrigerant vapor generated in the regenerator 64 is introduced into the regenerator 2 to concentrate residue of the dilute solution fed from the absorber 7.