HIGH EFFICIENCY LOW TEMPERATURE HOT WATER DRIVEN TWO-LIFT TYPE ABSORBTION REFRIGERATOR USING HEAT EXCHANGER OF ABSORBED HEAT

摘要

The present invention relates to a high-efficiency, low-temperature water two-stage absorption refrigerator using a absorption heat exchanger and, especially, to a low-temperature water two-stage absorption refrigerator comprising: a first cell having a first generator, an auxiliary generator, and a condenser; a second cell having an evaporator and an absorber; a third cell having a second generator and an auxiliary absorber; a high-temperature heat exchanger; a low-temperature heat exchanger; an auxiliary heat exchanger; multiple pumps; and a coolant line, a refrigerant line, an absorption liquid line, and a cold water line which connect the components above. The low-temperature water two-stage absorption refrigerator includes: a first absorption heat exchanger installed at the top of the absorber of the second cell and supplying an absorption liquid, which is discharged from the second cell, to the low-temperature after heating the absorption liquid from the second cell by absorbing the heat of an absorption liquid sprayed from the low-temperature heat exchanger to the absorber; and a second absorption heat exchanger installed at the top of the auxiliary absorber of the third cell and supplying an absorption liquid, which is discharged from the third cell, to the auxiliary heat exchanger after heating the absorption liquid from the third cell by absorbing the heat of an absorption liquid sprayed from the auxiliary heat exchanger to the auxiliary absorber. According to the present invention, a absorption heat exchanger is installed at the upper side of absorber to collect waste heat from each absorption heat exchanger, heat an absorption liquid, then supply the absorption liquid to a low-temperature heat exchanger. The heat absorption heat exchanger is also installed at the upper side of an auxiliary absorber to collect waste heat, heat an absorption liquid, then supply the absorption liquid to a second generator so that efficiency (COP) can be relatively improved. [Reference numerals] (AA) Hot water outlet; (BB) Coolant outlet; (CC) Hot water inlet; (DD) Cooling water outlet; (FF) Cooling water inlet; (GG) Coolant inlet; (HH) Refrigerant liquid; (II) Diluted liquid; (JJ) Medium liquid; (KK) Concentrated liquid; (LL) Auxiliary diluted liquid; (MM) Auxiliary concentrated liquid; (NN) Cooling water; (OO) Coolant; (PP) Hot water