Circulating water cooling system and method

Abstract

The invention provides a circulating water cooling system and mode. The system comprises a closed type tower cooling system, a flow guiding system and a heat pump system, wherein the closed type towercooling system comprises a fan, a sprinkler, a heat exchange coiled pipe, a heat exchange layer and a water collecting tank; the flow guiding system comprises a flow blocking oblique plate, a flow guiding plate, a control gate and an evaporating chamber; the heat pump system comprises an evaporator, a compressor, a condenser and an expansion valve which are sequentially connected by a pipeline, and the expansion valve and the evaporator are connected, forming a loop; and the evaporator is arranged in the evaporating chamber. By adopting the system, various cooling modes can be realized according to the variation of ambient temperature and different water saving or electricity saving requirements. In the invention, the traditional closed type tower cooling system is coupled with the heat pump system, and under the assistance of the flow guiding system, the water saving effect and the energy saving effect of the whole system are improved; and besides, the size of the existing closed type tower equipment is reduced to a great degree, so that land occupying area is reduced.

Description

technical field [0001] The invention relates to a circulating water cooling system coupled with a heat pump, which belongs to the technical field of industrial circulating water. Background technique [0002] Most of the existing circulating water systems of large enterprises use traditional open cooling towers. On the one hand, they consume a lot of fresh water, accounting for 2 / 3 or even more of industrial water consumption; on the other hand, open cooling towers The cooling water of the tower is in direct contact with the atmosphere, and a large amount of impurities enter the system, causing corrosion and scaling of the pipes, forcing the addition of a large amount of chemicals, and the problem of low heat exchange efficiency is becoming more and more serious. Recently, many companies have begun to try to adopt a closed cooling tower, which places a tubular heat exchanger in the tower, and ensures the cooling effect through heat exchange between circulating air, spray wat...

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Problems solved by technology

But its shortcomings are also obvious. On the one hand, its heat pump system and cooling tower are still two independent devices, which are not coupled in one device. The two are connected through pipelines and heat exchangers, and multi-stage heat exchange is adopted. The structure is complex and the heat loss is serious; on the other hand, the heat pump must work 24 hours a day to achieve both cooling and defogging effects. Compared with traditional cooling towers, its energy consumption is very high

[0007] CN201510419893.8 discloses a water-type closed-loop water-air cooling system and method, and proposes the idea of ​​primary cooling of the cooling tower and secondary cooling of the heat pump, but the heat pump system and the cooling tower are still two independent devices, and It transfers the heat of the circulating water that needs to be cooled to another cooling water through the heat pump, and then transports it to the cooling tower for cooling and cooling, which means that the heat that needs to be processed returns to the cooling tower in another way. obviously unreasonable

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