Two-stage first kind absorption heat pump

Abstract

The invention discloses a two-stage first kind absorption heat pump, which is composed of a generator, a first absorber, a second absorber, an evaporator, a condenser, a throttle, a first solution pump, a second solution pump, a first solution heat exchanger, a second solution heat exchanger and a refrigerant liquid pump; the structure is simple, the process is reasonable, the concentration of the solution getting into the first absorber is the same as that of the solution getting into the second absorber, waste heat with lower temperature can be utilized, or the temperature of the waste heat is increased, and the solutions getting into the first absorber and the second absorber are mutually independent without mutual influence. Therefore, under the condition of certain waste heat temperature, the pressure of refrigerant vapor at the outlet of the second absorber is adjusted conveniently through changing the concentration difference of the solutions of the inlet and outlet of the second absorber to satisfy the requirements of the heating temperature and the driving heat temperature, and the operating parameter of the whole circulation is not required to be adjusted.

Description

technical field [0001] The invention belongs to the technical field of low-temperature waste heat utilization. Background technique [0002] The first type of absorption heat pump is a high-efficiency energy-saving device that uses thermal energy as a driving force to realize the utilization of low-temperature waste heat. It is widely used in petroleum and petrochemical, smelting, steel and other industries, civil central heating and combined heat and power supply. High heating temperature, simple unit structure and high performance index are the guidelines for the optimal design of heat pump units. In order to use a lower-temperature driving heat source or provide higher-temperature heat, people have developed two-stage and multi-stage absorption heat pumps to meet the requirements, but the traditional two-stage and multi-stage absorption refrigerators are complex in structure, high in cost, and limited application of the first type of absorption heat pump. Therefore, ado...

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Problems solved by technology

In order to use a lower-temperature driving heat source or provide higher-temperature heat, people have developed two-stage and multi-stage absorption heat pumps to meet the requirements, but the traditional two-stage and multi-stage absorption refrigerators are complex in structure, high in cost, and limited The application of the first kind of absorption heat pump

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