Absorption-compression type dual-temperature second-kind heat pump system

Abstract

The invention discloses an absorption-compression type dual-temperature second-kind heat pump system. The absorption-compression type dual-temperature heat pump system comprises a generator (1), a condenser (2), a gas-liquid heat exchanger (4), an evaporator (5), a first absorber (8), a second absorber (6), a compressor (7), a first solution heat exchanger (9), a second solution heat exchanger (11), a solution pump (13), a refrigerant pump (3), a first throttling element (10) and a second throttling element (12), wherein the evaporator (5) is provided with two gaseous refrigerant outlets; a first gaseous refrigerant outlet is connected with an air inlet of the compressor (7); an air exhaust of the compressor (7) is connected with a gaseous refrigerant inlet of the first absorber (8); and a second gaseous refrigerant outlet is connected with a gaseous refrigerant inlet of the second absorber (6). The system has a function of providing a high-grade dual-temperature heat source by utilizing a driving heat source, and the temperature, which is provided by the system, of two heat supply ends has higher flexibility in output regulation.

Description

technical field [0001] The invention relates to an absorption-compression double-temperature second-type heat pump system, which belongs to the technical field of refrigeration and air-conditioning equipment. The system adds a compressor on the basis of the second type of absorption heat pump system, which can provide two independent heat sources. At the same time, it has the characteristics of low temperature of the driving heat source, strong feasibility, hybrid drive, and low-grade heat source can be used. It is easy to popularize and apply. Background technique [0002] The second type of heat pump system (or heating type heat pump) is a device driven by a low-grade heat source to obtain a high-grade heat source. Wide advantages, when there is only one driving heat source, if you want to provide a dual-temperature high-grade heat source to the outside world, you can use the high and low pressure absorbers of the traditional double-effect second-type heat pump to provide ...

AI Technical Summary

Problems solved by technology

In this structure type, due to the coupling relationship between the high and low pressure absorbers, the heating temperature of the high pressure absorber must be affected by the absorption pressure of the low pressure absorber, and the absorption pressure of the low pressure absorber is constrained by the temperature level of the driving heat source , so that the temperatures of the two heating ends provided by the high-pressure and low-pressure absorbers cannot be independent of each other, that is, as long as the heating temperature of one is determined, the temperature of the other is basically determined. This feature limits the system to a certain extent. The flexibility of the temperature adjustment of the two heating ends reduces its scope of application

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