Circulating cooling water system

Circulating cooling water system refers to the cooling water heat exchange and cooling, recycling water supply system, including open and closed two types.

Principle

A cooling water system that uses water as a cooling medium and is recycled. It is mainly composed of cooling equipment, water pump and pipeline. After the cold water flows through the production equipment (often called heat exchange equipment, such as heat exchanger, condenser and reactor) that needs cooling, the temperature rises. If it is discharged immediately, the cold water is only used once (called direct current cooling water system). If the heated cold water flows through the cooling equipment, the water temperature drops back. It can be pumped back to the production equipment for reuse. The amount of cold water is greatly reduced, often saving more than 95%. Cooling water accounts for about 70% of industrial water consumption, so the cooling water circulation system plays a role in saving a lot of industrial water.

The lower temperature cooling water from the cooling tower is pressurized by the cooling pump and sent to the chiller. After taking away the heat from the condenser, the temperature rises and is then sent to the cooling tower for spraying. Due to the rotation of the cooling tower fan, the cooling water continuously exchanges heat and moisture with the outdoor air during the spraying and falling process and cools. The cooled water falls into the cooling tower water tray and then enters the next cycle after being pressurized by the cooling pump again. This is its process, the principle is also very simple, is a process of heat exchange, which is a reason with our radiator heating.

Classification

Cooling equipment is divided into open and closed, so the cooling water circulation system is also divided into open and closed two categories. The design and operation of open systems are complex.

Open type

Cooling equipment has two types of cooling pool and cooling tower, which mainly rely on the evaporation of water to reduce the water temperature. Furthermore, the cooling tower is often fan to promote evaporation, cooling water is often blown away. Therefore, the open cooling water circulation system must be replenished with fresh water. Due to evaporation, the circulating water is concentrated, and the concentration process will promote salt fouling (see sediment control). Make-up water has a dilution effect, and its flow rate is often determined according to the concentration limit of circulating water. The amount of supplementary water usually exceeds the amount of water lost by evaporation and wind blowing, so some circulating water (called sewage) must be discharged to maintain the balance of water. Cooling water circulation system in the open system, due to water contact with the atmosphere, dust, microorganisms, etc. into the circulating water; in addition, the escape of carbon dioxide and heat exchange equipment in the leakage of materials, but also change the quality of circulating water. For this reason, circulating cooling water often requires treatment, including sediment control, corrosion control and microbiological control. The determination of the treatment method is often related to the quantity and quality of the make-up water, as well as the performance of the production equipment. When multiple agents are used, chemical reactions that may exist between the agents are to be avoided.

Closed

Closed cooling water circulation system adopts closed cooling equipment, circulating water flows in the pipe, and air is usually used to dissipate heat outside the pipe. Except for the material leakage of heat exchange equipment, no other factors change the quality of circulating water. In order to prevent salt scale in the heat exchange equipment, sometimes the cooling water needs to be softened (see water softening). In order to prevent heat exchange equipment from being corroded, corrosion inhibitor is often added; when using high concentration and highly toxic corrosion inhibitor, attention should be paid to safety, and the cooling water discharged during maintenance should be properly disposed.

Advantages

1. Remove the biological slime to ensure the normal operation of the cooling tower;

2, completely kill all kinds of bacteria, to ensure the life and health of people;

There is no harm to people and the environment, and no corrosion to the equipment;

4, the system intelligent operation, stable performance, no personnel duty;

5, do not need to stop washing, improve production efficiency;

6, reduce the energy consumption of the circulation system, reduce the operating cost of enterprises;

The solution can be completely degraded and discharged directly without increasing the cost of subsequent sewage treatment.

Industrial Applications

Cooling of heat generating parts of semiconductor manufacturing equipment:

Single wafer cleaning transfer, printing machine, automatic clamping installation device, spraying device, ion plating device, etching device, single wafer processing device, slicer, packaging machine, temperature management of developer, exposure device, heating device of magnetic generating part, etc.

Cooling of the heating part of the laser unit:

Laser processing, the heating part of the welding machine, laser marking device, generating device, carbon dioxide laser processing machine, etc.

Cooling of heating parts of other industrial machines:

Plasma welding, automatic packaging machine, mold cooling, cleaning machinery, gold plating tank, precision grinding machine, injection molding machine, molding part of resin molding machine, etc.

Analyze and detect the cooling of the heating part of the machine:

The light source of the electron microscope, the light source part of the ICP luminescence spectroscopic analysis device, the heating part of the spectrophotometer, the heat source of the X-ray analysis device, the heating part of the automatic pulse strip device, the light source of the atomic absorption photometer, etc.

Cooling of cooling medium for CNC machine tools and machining centers.

Scan the official two-dimensional code above to get more knowledge and intimate tips

Pre-sales and after-sales maintenance purchases can be made through the public number for details, looking forward to your arrival!

  

 

Address: No.1, Happiness Road, Feixiang Economic and Technological Development Zone, Handan City, Hebei Province

Sales Hotline:0310-3178005  400-0310-652  

We sincerely welcome your call!

Handan Oasis Environmental Protection Equipment Co., Ltd. looks forward to cooperating with you!