Low-temperature heat source-driven air-cooling ammonia water absorption refrigerating machine

Abstract

The invention discloses a low-temperature heat source-driven air-cooling ammonia water absorption refrigerating machine which comprises a generator, a condenser, a throttling component, an evaporator, an absorber, a solution pump and an ejector which are connected by pipelines, wherein the tope of the generator is provided with an air-cooling heat pipe cooler, a first solution heat exchanger is correspondingly arranged below a concentrated solution inlet in the generator, a second solution heat exchanger is arranged in the absorber, and the dilute solution outlet of the generator is connectedin series with the first solution heat exchanger, a first air-cooling cooler and the second solution heat exchanger by pipelines and is then connected into the working fluid inlet of the ejector; andthe fluid outlet of the ejector is connected in series with a second air-cooling cooler by a pipeline and is then connected into the solution inlet of the absorber. By effectively using low grade energy to reject heat in the air-cooling mode, the refrigerating machine realizes the air cooling of the set, realizes the high-efficiency utilization of the low grade energy, and has the advantages of stable and reliable operation, high efficiency, energy saving, low operation cost and the like.

Description

technical field [0001] The invention relates to a refrigerator, in particular to an air-cooled ammonia water absorption refrigerator driven by a low-grade energy heat source. Background technique [0002] The ammonia water absorption refrigerator in the prior art uses ammonia as the refrigerant, which has the advantages of energy saving and environmental protection. In order to improve efficiency, there is also an ammonia water absorption refrigerator using an ejector. fluid to obtain a medium-pressure mixed fluid device, as in the technical content disclosed in Chinese patent CN 101776346, an injector with a nozzle and an injection port is used to mix dilute ammonia solution as a working fluid and as an introduction However, due to the limited injection flow rate of this type of ammonia water absorption refrigerator, the absorption effect still needs to be improved. In addition, the existing ammonia water absorption refrigerators have the disadvantages of difficulty in a...

AI Technical Summary

Problems solved by technology

[0002] The ammonia water absorption refrigerator in the prior art uses ammonia as the refrigerant, which has the advantages of energy saving and environmental protection. In order to improve efficiency, there is also an ammonia water absorption refrigerator using an ejector. fluid to obtain a medium-pressure mixed fluid device, as in the technical content disclosed in Chinese patent CN 101776346, an injector with a nozzle and an injection port is used to mix dilute ammonia solution as a working fluid and as an introduction However, the absorption effect of this type of ammonia water absorption refrigerator still needs to be improved due to the limited injection flow rate.

In addition, the existing ammonia water absorption refrigerators have the disadvantages of difficult air-cooling of the unit and the need for high temperature, which greatly limits the effective use of ammonia water absorption refrigerators for low-temperature heat sources

Images