Second-kind lithium bromide absorption heat pump unit system

Abstract

The invention relates to a second-kind lithium bromide absorption heat pump unit system which comprises two single-effect second-kind lithium bromide absorption heat pump units. The two single-effect second-kind lithium bromide absorption heat pump units are connected through a pipe, the first unit and the second unit respectively comprise a generator (1), a condenser (2), an evaporator (6), an absorber (7) and a solution heat exchanger (5), a driving waste heat source sequentially enters the evaporator (6) of the first unit, the evaporator (6) of the second unit, the generator (1) of the second unit and the generator (1) of the first unit in a series connection mode, cooling water respectively enters the condenser (2) of the first unit and the condenser (2) of the second unit in a parallel connection mode, a manufactured high temperature heat source respectively enters the absorber (7) of the first unit and the absorber (7) of the second unit in a parallel connection mode, solution circulation and refrigerant water circulation of the two units are respectively independent, and respectively operate according to the single-effect procedure of a prior second-kind lithium bromide absorption heat pump unit. According to the second-kind lithium bromide absorption heat pump unit system, middle (low)-temperature waste heat sources are used for driving, and recovery of waste heat can be improved under the condition that cooling water is used.

Description

technical field [0001] The invention relates to a second type lithium bromide absorption heat pump unit system. 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. The previous single-effect second-class lithium bromide absorption heat pump units, such as figure 1 As shown, it mainly includes generator 1, ...

AI Technical Summary

Problems solved by technology

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

In order to increase the temperature rise range for producing high-temperature heat sources, it is necessary to reduce the temperature difference of available waste heat sources, resulting in a reduction in the total amount of recovered waste heat, and part of the waste heat cannot be recycled and wasted, resulting in increased energy consumption

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