Generation-absorption-reabsorption system and absorption unit type based on system

Abstract

The invention discloses a generation-absorption-reabsorption system and an absorption type unit based on the system, and belongs to the technical field of heat pump / refrigeration. The absorption type unit consists of an absorber, a second absorber, a generator, a solution heat exchanger, a second solution heat exchanger and one or two solution pumps, wherein the absorber is communicated with the generator via the solution pump and the solution heat exchangers, the generator is communicated with the second absorber via the second solution heat exchanger, and then the second absorber is communicated with the absorber via the solution heat exchanger; or the absorber is communicated with the second absorber via the solution pump and the solution heat exchanger, the second absorber is communicated with the generator via the second solution pump and the second solution heat exchanger, and then the generator is communicated with the absorber via the solution heat exchanger. The generator is provided with a cryogen steam pipeline and a driving heat medium pipeline respectively communicated with the outer part, and the absorber and the second absorber are respectively provided with a cryogen steam pipeline and a heated medium pipeline respectively communicated with the outer part. The generator provides high-temperature cryogen steam for the outer part, the absorber absorbs higher-temperature cryogen steam and releases the heat, the second absorber absorbs lower-temperature cryogen steam and releases the heat to form a generation-absorption-reabsorption system, and components are added to form the absorption unit based on the system.

Description

Technical field: [0001] The invention belongs to the technical field of low-temperature waste heat utilization heat pump / refrigeration. Background technique: [0002] The use of absorption refrigerators for refrigeration and the use of absorption heat pump technology for waste heat utilization are important contents in thermal energy utilization. It is of positive significance to increase the depth of utilization of waste heat resources by absorption units or to reduce the temperature requirements of units for driving heat medium during refrigeration. [0003] From the perspective of heat pumps, increasing the heating temperature of heat pumps, utilizing lower temperature waste heat resources and improving the performance index of units are the main directions of people's efforts. In order to maintain a certain waste heat utilization rate, it is required that the heat pump process using waste heat does not change as the temperature of waste heat resources decreases. In the ...

AI Technical Summary

Problems solved by technology

When the refrigerated medium is lowered from a higher temperature to a lower temperature, it is necessary to use a combination of heat pump processes with different effects and stages to achieve a low performance index of the refrigeration process in the low-temperature section of the refrigerated medium, so that the performance index of the refrigeration system is not high. ideal

It can be seen that whether it is refrigeration or heating, the greater the temperature range of the waste heat medium is, the more difficult it is to obtain a higher performance index by combining processes with different numbers of effects and stages.

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