Composite absorption type heat pump formed by increasing low temperature heat supply terminal

Abstract

A composite absorption heat pump formed by increasing low temperature heating ends belongs to the heat pump / refrigeration technical field. The composite absorption heat pump consists of a first class generator, a condenser, an evaporator, an absorption-generator, a second class generator, an absorber, a first throttle valve / a second throttle valve or a throttle valve / a refrigerant liquid pump, a first solution pump, a second solution pump and a solution heat exchanger. A new condenser and a new throttle valve are added to a two-stage heat pump on which the absorption-generator and the first class generator provide a refrigerant vapor to the absorber; the absorption-generator and the first class generator are provided with a refrigerant vapor passage communicated with the new condenser; the new condenser is communicated with the generator through the new throttle valve; and a pipeline is communicated with medium to be heated and other necessary alternation. The first class generator, the new condenser, the new throttle valve, the generator, the absorption-generator and the first solution pump constituent a single-stage flow. The single-stage flow and a two-stage flow form a composite flow. The invention can improve the performance index of the heat pump in wide temperature range when heating at the high temperature, and the waste heat can be further utilized when refrigerating.

Description

Technical field: [0001] The invention belongs to the technical field of low-temperature waste heat utilization and heat pump / refrigeration. Background technique: [0002] Using absorption heat pump / refrigeration technology for waste heat utilization is an effective means. Simple structure, high performance index and ability to meet the demand are the development direction and the most fundamental requirement of absorption heating / refrigeration technology. When utilizing waste heat, in order to obtain a higher heating temperature or to be able to utilize lower temperature waste heat resources, two or more heat pump processes and structures are often required. However, there is a mutual restrictive relationship between the working parameters of the unit and its performance index - the unit with a low number of stages has a low heating temperature and a high performance index, and the unit with a high number of stages has a high heating temperature but a low performance index....

AI Technical Summary

Problems solved by technology

When waste heat cooling is used, when the cooling requirements and the initial parameters of the driving heat are determined, units using a single stage often cannot make full use of the driving heat to obtain more cooling capacity, especially when using waste heat cooling—that is, A unit with a single stage cannot fully and effectively utilize the waste heat

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