Heat exchange cooling water system and control method

Abstract

The invention provides a heat exchange cooling water system which comprises a cooling water storage tank, a heat exchanger, a circulation water pump and a water cooling unit. The cooling water storage tank is connected with the heat exchanger, the heat exchanger is connected with the circulation water pump which is connected with the water cooling unit, the water cooling unit is further connected with the cooling water storage tank, and therefore a closed circulation system is formed. According to the heat exchange cooling water system, the defects that cooling water in an existing open type cooling system is likely to be contaminated, and normal equipment running is affected are overcome. Furthermore, temperature collection is conducted on cooling water at a water outlet of the circulation water pump through a temperature sensor, a temperature value is converted into an electric signal to be transmitted to an electric three-way regulating valve, afterwards, the electric three-way regulating valve is used for controlling the water return flow of high-temperature cooling water entering the circulation water pump, the temperature of cooling water before the cooling water enters the water cooling unit is increased or decreased through the volume of the returned high-temperature cooling water, and therefore the temperature of the cooling water can meet the standard-state requirement.

Description

technical field [0001] The present invention relates to the technical field of air-conditioning systems, in particular to a heat-exchange cooling water system and a control method that utilizes tap water pipe networks and cooling water to perform heat exchange for chillers. Background technique [0002] The traditional water-cooled chiller uses water as the cooling medium, and its related devices include cooling towers, cooling water circulation pumps, pipelines and valve systems, etc. After the cooling water exchanges heat with the air-conditioning and refrigeration equipment, it needs to be sent to the cooling tower, where it is sprayed onto the surface of the heat-dissipating material to make it contact with the air. At this time, a sensible heat exchange occurs between the hot water and the cold air, and at the same time part of the hot water is evaporated, and the latent heat of evaporation is discharged into the air, and finally the cooled water falls into the tank and...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a heat exchange cooling water system and its control method, aiming to solve the problems of equipment corrosion, scaling, bacteria and algae growth and sludge in the existing open cooling circulating water system

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