Why Add an Expansion Tank to the Chiller?

In the production and sales process of industrial chillers, we often encounter the problem that customers need to install an expansion tank. So what is an expansion tank?

Expansion tank is widely used in the industrial chiller. It is a closed water circulation system for the equipment.

Its main role is to compensate for the volume change of water in the system, thereby maintaining the stable pressure and water volume of the system. An expansion tank usually consists of a closed container and a removable isolation membrane that can move in response to changes in the pressure of the water in the system. On this way, it can regulate the amount of water in the tank.

When the temperature of the water in the chiller system changes, the volume of the water will change accordingly. Using the expansion tank can be a good solution to these problems. It can absorb this change in water volume to prevent the system from excessive high or low pressure and to protect the system equipment and to ensure that the system operates normally.

Customers who generally customize expansion tanks usually use expansion tanks in closed chillers in the following cases:

1. Heating systems: Expansion tanks are often used in heating systems to regulate the pressure of the system and prevent over or under pressure due to changes in the temperature of the heating water.

2. Cooling system: In the cooling system, the expansion tank is used to absorb the water capacity change caused by the cooling water temperature change to ensure the stable operation of the system.

3. Industrial heating system: In industrial heating systems, expansion tanks are often used to regulate the pressure and water volume of the systemso as to protect the system equipment and extend its service life.

4. Geothermal systems: Expansion tanks are also used in geothermal systems to balance the changes in the water capacity of the system and to maintain the stable operation of the system.

In general, the expansion tank is suitable for a variety of closed circulation chiller, especially the need to regulate the system pressure, protect the system equipment and have a certain temperature needs of the occasion.

What is the advantage of adding an expansion tank in that chiller closed system?

• Compensation for water volume change: When Pengqiang chiller work, the water temperature in the system will change, resulting in a change in the volume of water. Expansion tank can absorb this change in water volume to maintain the s Maintain stable pressure: Expansion tanks can regulate the pressure of the system to ensure that the pressure inside the system is always in the right range under different working conditions,  as well as to ensure the normal operation of the system.tability of the system, to avoid excessive high or low system pressure due to changes in water temperature.

• Protect the system: Expansion tanks can reduce water rust and air in the system, thus reducing corrosion and damage to piping and equipment and extending the service life of the system.

• Maintain stable pressure: Expansion tanks can regulate the pressure of the system to ensure that the pressure inside the system is always in the right range under different working conditions,  as well as to ensure the normal operation of the system.

Overall, the expansion tank plays an important role in balancing the water capacity change, protecting the system and maintaining stable pressure in the closed circulation system of the chiller. So many customers want to customize this type of chiller.

Expansion tanks are often seen as a beneficial piece of equipment in a closed chiller because they help to balance water volume changes in the system and maintain a stable water pressure and volume.

However, if expansion tanks are not properly used or maintained, they can have a number of negative effects, including:

• Water contamination: If expansion tanks are not regularly cleaned and maintained, they may lead to a decline in water qualitythat will producerust, sediment and microorganisms and affect the operation of the system and water quality.

• Expansion tank leakage: If the sealing performance of the expansion tank is poor or damaged, water leakage may occur. It mayresult in unstable or reduced system pressure, which will affect the normal operation of the system.

• System pressure out of control: If the expansion tank failure or failsto properly regulate the system pressure, it may lead to system pressure is too high or too lowso as to affect the safety of the system equipment and operational stability.

• Increase in energy consumption: If the expansion tank fails to effectively regulate the water pressure and water volume of the system, it may lead to frequent starting and stopping of the system pumps or reduce the operating efficiency, and increasethe energy consumption of the system.

Therefore, to give fully play to the role of the expansion tank and avoid its possible negative impact, you need to regularly check and maintain the expansion tank to ensure that its sealing performance is good, the water quality is clean, and according to the actual situation of the system to adjust and manage the tank's operating parameters.