Absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot water

Abstract

The invention discloses an absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot water, and relates to the technical field of heat supply equipment. The absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot water comprises a generator, a condenser, a low-pressure absorber, an evaporator, a high-pressure absorber, a high-temperature generator and a water-water plate heat exchanger. The absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot water is structurally characterized inthat the low-pressure absorber and the evaporator form a low-pressure barrel body; the high-pressure absorber and the high-temperature generator form a medium-pressure barrel body; and the generatorand the condenser form a high-pressure barrel body. A circulation system of the absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot water is divided into an external water channel with a pressure, and an internal vacuum loop. Compared with the prior art, the absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot wateris capable of normally running at a temperature of 55-80 DEG C of a drive heat source, effectively reducing a return water temperature of a heat supply network, increasing the temperature differenceof supply water and return water of hot water at a primary side, and improving the conveying capacity of the heat supply network.

Description

technical field [0001] The invention relates to the technical field of heating equipment, in particular to an absorption heat exchange unit used for heating and heating, which can be applied to secondary stations of central heating, utilization of solar hot water, deep utilization of steam condensate, etc. occasion. Background technique [0002] As the scale of urban central heating increases year by year, the high-temperature hot water generated by centralized heat sources needs to be transported over a long distance to reach the heating area. In the case of the same heat supply, increasing the temperature difference between supply water and return water can Reduce the water supply flow, thereby reducing the initial investment in pipelines. At the same time, the power consumption of the water pump can also be reduced, thereby reducing heating energy consumption and heating costs. [0003] In the prior art, the Chinese patent "A heat pump type heat exchange unit" proposes ...

AI Technical Summary

Problems solved by technology

At this time, due to the working characteristics of the conventional absorption heat exchange unit, the temperature of the driving heat source decreases, resulting in the return water temperature of the primary network being higher than 25°C, and even the unit cannot operate.

Therefore, when the primary network supply water temperature is low in practical applications, it is not suitable for this type of absorption heat exchange unit

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