Double-effect and triple-effect first-type absorption heat pump with heat return end and heat supply end

Abstract

The invention provides a double-effect and triple-effect first-type absorption heat pump with a heat return end and a heat supply end, which belongs to the technical field of absorption heat pumps. A second absorber is sequentially communicated with a second solution pump, a third solution heat exchanger, a first absorber, a first solution pump, a second solution heat exchanger, a first solution heat exchanger and a first generator, the first generator is further sequentially communicated with the first solution heat exchanger, a second generator, the second solution heat exchanger, a third generator, the third solution heat exchanger and a second absorber, the first generator is provided with a steam channel used for communicating with the second generator and the third generator, the second generator is communicated with a condenser via a first throttling valve, the third generator is communicated with the condenser via a second throttling valve, the second generator is provided with a steam channel used for communicating with the condenser, the third generator is provided with a steam channel used for communicating with the first absorber, the condenser is communicated with an evaporator via a third throttling valve, and the evaporator is provided with a steam channel used for communicating with the second absorber, so that the double-effect first-type absorption heat pump with the heat return end and the heat supply end is formed.

Description

Technical field: [0001] The invention belongs to the technical field of low-temperature waste heat utilization heat pump / refrigeration. Background technique: [0002] In order to further improve the utilization rate of heat energy, people have proposed single-stage double-effect and single-stage three-effect first-class absorption refrigerator / heat pump units, among which the double-effect first-class absorption heat pump is a common heating / refrigeration field. unit. However, there is a large difference in performance index between the traditional double-effect first-type absorption heat pump and the three-effect first-type absorption heat pump, and the same is true between single-effect and double-effect. In addition, when the temperature that needs to raise the waste heat is between the maximum heating temperature of the single-effect / double-effect / three-effect unit, or the temperature of the driving heat source during cooling is between the minimum driving heat source r...

AI Technical Summary

Problems solved by technology

However, there is a large difference in performance index between the traditional double-effect first-type absorption heat pump and the three-effect first-type absorption heat pump, and the same is true between single-effect and double-effect

In addition, when the temperature that needs to raise the waste heat is between the maximum heating tem

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