ABSORPTION REFRIGERATION UNIT

摘要

PROBLEM TO BE SOLVED: To improve the thermal efficiency of an absorption refrigeration unit. SOLUTION: A refrigerant heat recovering instrument 11 to perform heat exchange between a refrigerant to heat an intermediate absorption liquid in a low-temperature regenerator 3 to perform heat radiation and condensation and to be introduced in a condenser 4 via a refrigerant pipe 20 and a part of dilute absorption liquid discharged from an absorber 7 and fed to a high- temperature regenerator 1 bypassing a low-temperature heat exchanger 9 is provided. An absorption liquid pump 18 is provided on an absorption liquid pipe 13 with a refrigerant heat recovering instrument 11 interposed therebetween. The number of rotation of the absorption liquid pump 18 is controlled by a controller 33 so that the temperature of a concentrated absorption liquid detected by a temperature sensor 32 is not to be below a predetermined value, for example, 40°C. COPYRIGHT: (C)2004,JPO