A cooling system for realizing high-precision temperature control and its control method

Abstract

The invention discloses a cooling system for realizing high-precision temperature control. The cooling system comprises a process cooling water loop and a frozen water loop. The process cooling waterloop comprises a heat exchanger for cooling, a water storage tank, a process cooling water pump and a heat exchanger for temperature control. The frozen water loop comprises a first refrigerating machine, a second refrigerating machine, a buffer water tank, a chilled water pump, a third valve, a heat exchanger for cooling, a water flow control device of the heat exchanger for cooling, a heat exchanger for temperature control, a water flow control device of the heat exchanger for temperature control, a fourth valve, a fifth valve and a sixth valve. The invention further discloses a control method of the cooling system for realizing high-precision temperature control. By adjusting the valves, the frozen water loop forms a conventional mode frozen water loop, a free cooling mode free cold water loop, and a free cooling mode frozen water loop. According to the cooling system for realizing high-precision temperature control and the control method of the cooling system, the problem of watertemperature precision control of the cooling system with large loads and being prone to stepping is solved, energy waste is avoided, stability is maintained, the free cooling mode can be used in the cold season, and the system energy efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of cooling systems, in particular to a high-precision temperature-controlled cooling system and a control method thereof. Background technique [0002] With the continuous improvement of industrial production level, the requirements for process equipment and production conditions are also getting higher and higher. During the production process of many industrial equipment, cold water is needed to cool the processing materials or equipment. At present, the commonly used cooling method is to use the cooling system to provide process cooling water at a certain temperature for cooling. Water temperature control has become a very important one in industrial production and scientific research activities. Links, such as integrated circuits, precision instruments, electronic equipment and other process production processes, all have high precision requirements for cooling water temperature. Whether the temperature ...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing process cooling water systems use cold and hot offset methods to maintain water temperature fluctuations within a small range, which is easy to control, but causes waste of energy

At the same time, because the system is difficult to maintain the running or stopping state for a long time, in the process of starting and stopping the equipment and loading and unloading, the load of the cooling system will step up, and the water temperature will fluctuate greatly due to the load change, which will easily cause irreversible damage to the production process. influences

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