Composite absorption heat pump

Abstract

The invention provides a composite secondly absorption type heat pump, belongs to the waste heat utilization heat pump technology. To keep the wide range and high-performance index of the second absorption heat pump at the same time, mostly takes the generator, condenser, pump and cold solution pump as the shared parts, adds a group of evaporator, absorber and accessories to compose the stair second category heat pump structure, the shared parts and the other components of the absorber, evaporator, absorb-evaporator or to increase generator, intermediate heat exchanger and accessories form the second category or multilevel heat pump structure, compose the whole composite unit to realize two or multi-heat pump flow at the same time; the solution pump respectively or in turn provide the concentrated solutions to each absorber, the cold-cold-fluid pump respectively provide the solution to the evaporator, absorb-evaporator, the waste heat medium flows the heat out through the evaporator, the heat medium get the different grade heat; the unit has simple structure, width heating interval, high utilization of waste heat.

Description

Technical field: [0001] The invention belongs to the technical field of low-temperature waste heat utilization heat pumps. Background technique: [0002] Using absorption heat pump technology for waste heat utilization is an effective means, which has relatively good energy saving, environmental protection and economic benefits. In practical application, not only the heat supply temperature of the heat pump is required to meet the needs of heat users, the process and structure of the heat pump are simplified, but also the heat pump is required to have a high performance index—that is, a high utilization rate of waste heat. [0003] When the waste heat temperature is high and the waste heat is relatively abundant, the second type of absorption heat pump technology can achieve high efficiency and energy saving. The process and structure of the second type of single-stage absorption heat pump are generally simplified, but its heating temperature and performance index cannot be...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is achieved in this way, it mainly aims at the problem that the second type of absorption heat pump cannot have a wide heating range and high waste heat utilization rate at the same time, and mainly uses generators, condensers, solution pumps and refrigerant liquid pumps as common components , adding a group of absorbers, evaporators, throttle valves and pressure regulating valves or a group of absorbers, evaporators, throttle valves, solution pumps combined with generators or rectification columns, condensers, solution pumps in the original heat pump And the refrigerant liquid pump constitutes a first-class second-class absorption heat pump structure, and the common parts form a two-stage or multi-stage single-generator type second-class absorption heat pump structure with other absorbers, evaporators, absorption-evaporators and auxiliary parts , the single generator type increases the generator and the intermediate heat exchanger to form a two-stage or multi-stage double generator and above type second absorption heat pump structure, the difference between the evaporator of the first-stage heat pump structure and the evaporator of the combined heat pump structure The absorber of the first-stage heat pump structure and the absorber of the compound heat pump structure are connected through the solution pipeline or are relatively independent of each other, thus forming a structure that can simultaneously realize two or more same-stage However, for the integrated composite unit with different heat supply intervals or different stages of heat pump processes; the shared solution pump supplies the concentrated solution to each absorber separately or sequentially, and the shared refrigerant liquid pump supplies the refrigerant liquid to each evaporator and absorber respectively. - Provided by evaporators and composite absorption-evaporators, the waste heat medium flows through each evaporator sequentially or separately to release low-temperature heat, and the heated medium correspondingly obtains heat in different temperature ranges in the primary heat pump process and other heat pump processes, so that it can be used Realize the deep utilization of waste heat

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