Method to improve heating temperature of heat pump and second-type high temperature absorption heat pump

摘要

The method to improve the heating temperature of heat pump and the second-type high temperature absorption heat pump both belong to the field of heat pump technology. We can get the corresponding second-type high temperature absorption heat pump based on the second-type low temperature absorption heat pump as following ways. In the second-type low temperature absorption heat pump, we add the new added steam bleeding chamber, the new added absorber, then new added throttle or the new added liquid refrigerant pump, the new added solution pump and the new added solution heat exchanger. And some pipes are connected in a reasonable way. Or we adjust the connection of some pipes too. Then we can achieve correspondingly the three-stage high temperature second-type absorption heat pump or the high temperature second-type absorption heat pump with multi-terminal heating or the recuperative high temperature second-type absorption heat pump by combining some other components.

主权项

1. A method of improving a heating temperature of a heat pump comprising steps of: a dilute solution of an absorber (D1) passing through a solution heat exchanger (G1) and then entering a generator (A1), and then heating the dilute solution by a residual heat medium flowing through the generator (A1) for releasing a refrigerant vapor to provided to a condenser (B1), a concentrated solution of the generator (A1) flowing through a solution pump (E1), the solution heat exchanger (G1) and entering the absorber (D1) for absorbing heat and being partially vaporized, and then entering a steam bleeding chamber (1), the steam bleeding chamber (1) releasing the refrigerant vapor to enter the condenser (B1), the concentrated solution flowing through a new added solution pump (3), a new added solution heat exchanger (5) and then connecting a new added absorber (2), then the concentrated solution absorbing the refrigerant vapor came from the absorber (D1) and providing a high temperature heating load to the heated medium, the dilute solution of the new added absorber (2) flowing through the new added solution heat exchanger (5) and then entering the absorber (D1) for absorbing the refrigerant vapor came from an evaporator (C1) and releasing heat,
the refrigerant vapor, entering the condenser (B1) from the generator (A1) and the new added steam bleeding chamber (1), releasing heat to a cooling medium and becoming a liquid refrigerant, the liquid refrigerant flowing through a liquid refrigerant pump (F1) and then being divided into two parts, wherein a part of the liquid refrigerant flows through a new added throttle (6) and then enters the evaporator (C1) for absorbing residual heat and becoming refrigerant vapor provided to the absorber (D1); in the absorber (D1), the refrigerant vapor is absorbed by the solution and releases heat to the other road of solution and liquid refrigerant which flows through absorber (D1); the other part flows through absorber (D1) and absorbs heat becoming refrigerant vapor provided to the new added absorber (2); at first, the concentration of the solution entering the new added absorber (2) is promoted by the generator (A1) for the first time; and then, the solution concentration is improved by the absorber (D1) and the new added steam bleeding chamber (1) for the second time; the refrigerant vapor entering the new added absorber (2) is produced by the heating of the absorber (D1); the heating temperature of the new added absorber (2) is higher than the one of the absorber (D1), thus achieving the two stages improvement of the residual heat temperature.