Secondary generation Secondary absorption Secondary lithium bromide absorption heat pump unit

Abstract

The invention relates to a secondary-generation and secondary-absorption second-class lithium bromide absorption heat pump unit. The secondary-generation and secondary-absorption second-class lithium bromide absorption heat pump unit comprises a primary generator (14), a secondary generator (9), a condenser (2), an evaporator (6), a primary absorber (15), a secondary absorber (17), a high-temperature solution heat exchanger (16) and a low-temperature solution heat exchanger (13). The secondary absorber (17) and the evaporator (6) are placed in the same cavity. The primary absorber (15) and the primary generator (14) are placed in the same cavity. The secondary generator (9) and the condenser (2) are placed in the same cavity. Solution circulation modes comprise two independent circulation modes; the primary generator (14), the secondary absorber (17) and the high-temperature solution heat exchanger (16) form one solution circulation mode; the secondary generator (9), the primary absorber (15) and the low-temperature solution heat exchanger (13) form the other solution circulation mode. The secondary-generation and secondary-absorption second-class lithium bromide absorption heat pump unit can expand the range of temperature rise of a heat source under the condition of being driven by a medium (low) temperature waste heat source and using cooling water.

Description

technical field [0001] The invention relates to a second-type lithium bromide absorption heat pump unit. It belongs to the technical field of air conditioning equipment. Background technique [0002] There are a large amount of medium-temperature waste heat resources in the production process, and direct discharge not only wastes a large amount of heat sources, but also produces thermal pollution. Cooling with cooling water requires a large amount of cooling water. It requires a large amount of high-temperature heat source and consumes a large amount of high-quality energy to supply it. In such an occasion, the second type of lithium bromide absorption heat pump unit is used, and the waste heat and waste heat can be effectively recovered under the condition of using cooling water to produce a higher temperature heat source. However, the second type of lithium bromide absorption heat pump units in the past are all single-effect processes, such as figure 1 As shown, it main...

AI Technical Summary

Problems solved by technology

Compared with the temperature of the waste heat heat source, the temperature of the heat source produced by the second type of absorption heat pump unit in the single-effect process has a temperature rise range of only about 30°C, and is also limited by the temperature of the cooling water. The temperature rise of the heat source cannot be further increased, so that the production The grade of the heat source is limited, and the production process with a high grade of heat demand cannot be satisfied

Especially for the low temperature of the waste heat source, the second type of absorption heat pump unit using the traditional single-effect process cannot produce high-quality heat source for production process or domestic use due to the limited temperature rise range, so that the medium (low) temperature Waste heat cannot be recycled and goes to waste, resulting in increased energy consumption

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