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Chillers, also known as cooling water circulators and precision chillers, expressed in English as Chiller or Precision Chiller, are widely distributed in the industrial field, ranging from small laboratory applications to large industrial sites, including large equipment, accelerators, nuclear power plants, lasers All platforms require a cooling water system to take away the heat generated inside
.
The application of ordinary chillers is very wide, low-power applications, such as seafood pools in restaurants, breeding of tropical fish at home, and small instruments in laboratories
.
High-power applications, such as industrial injection molding manufacturing, laser cutting, large power switches, industrial coating machines, printing machinery, foundry machinery, and product production lines, all require the use of cooling water systems to ensure that various equipment work at a normal temperature within the range
.
Precision chiller is a branch in the application of chillers.
It has stricter requirements for the design, manufacture, use and maintenance of chillers, and has high technical indicators for the temperature, flow, pressure and cleanliness of cooling water
.
1.
In terms of temperature, the temperature control accuracy of common precision chillers is required to reach ±0.
1 degrees or 0.
05 degrees, or even 0.
01 degrees.
There are also some special applications that require the temperature control accuracy to be one thousandth or even one thousandth of a degree.
For example, the precision components inside the lithography machine are kept constant temperature
.
2.
The requirement for the cooling water flow is generally to pursue the stability of the flow, because the fluctuation of the flow will cause some adverse effects on some cooled parts, such as optical components and precision magnetic fields are very sensitive to the fluctuation of the flow
.
The continuous monitoring of flow, especially the monitoring and interlock control of the lower flow limit, is very important for the safe use of user equipment
.
3.
The circulating pressure fluctuation of the precision chiller also has different effects on the cooled parts
.
Some parts require smooth pressure, or some parts cannot withstand excessive pressure, or cannot withstand the shock of pressure at initial start-up
.
In the technical scheme of precision chillers, these have corresponding solutions to meet the actual needs of users
.
4.
The cleanliness of water quality is also a regular requirement for precision chillers, usually using physical methods such as filters, membrane permeation, and ion exchange
.
Deionized water can also be used directly
.
The mainstream indicators are generally expressed by resistivity or conductivity, and a certain conductivity or resistivity needs to be met in the entire chiller circulation system, with automatic control at the same time
.
At present, the common method to improve conductivity is to directly use deionized water, or to control the number of ions in the circulating system through ion exchange resin
.
In some special application scenarios, there may be some other indicators, but in general, the main ones are the above four indicators, temperature, flow, pressure, cleanliness (conductivity)
.
For example, the large-scale tools in basic scientific research are accelerators or synchrotron radiation sources, and electron-positron colliders.
Similar applications rely on precision magnets to accelerate high-energy particles.
The machining accuracy of the magnet itself is very high, and the mechanical error is required to be ±3μm.
, The temperature control of the magnet is also relatively high, and the thermal expansion and contraction caused by temperature fluctuations will seriously affect the accuracy of the magnet
.
In Beijing, Shanghai, Hefei, Mianyang, and Lanzhou, Changliu Instruments provides precision chillers with different cooling power, and the temperature control accuracy is ±0.
01℃ or higher, which well meets the cooling requirements of large precision equipment
.
In addition to temperature, the measurement and control requirements for pressure, flow, and cleanliness (conductivity), different application scenarios have different technical characteristics, and the technical indicators of precision chillers need to meet the specific application needs of users
.
The above are the application fields and four technical indicators of the precision chiller brought to users by Changliu Instrument.
If you have any questions, you can contact us at any time, and we will serve you wholeheartedly.
.
.
The application of ordinary chillers is very wide, low-power applications, such as seafood pools in restaurants, breeding of tropical fish at home, and small instruments in laboratories
.
High-power applications, such as industrial injection molding manufacturing, laser cutting, large power switches, industrial coating machines, printing machinery, foundry machinery, and product production lines, all require the use of cooling water systems to ensure that various equipment work at a normal temperature within the range
.
Precision chiller is a branch in the application of chillers.
It has stricter requirements for the design, manufacture, use and maintenance of chillers, and has high technical indicators for the temperature, flow, pressure and cleanliness of cooling water
.
1.
In terms of temperature, the temperature control accuracy of common precision chillers is required to reach ±0.
1 degrees or 0.
05 degrees, or even 0.
01 degrees.
There are also some special applications that require the temperature control accuracy to be one thousandth or even one thousandth of a degree.
For example, the precision components inside the lithography machine are kept constant temperature
.
2.
The requirement for the cooling water flow is generally to pursue the stability of the flow, because the fluctuation of the flow will cause some adverse effects on some cooled parts, such as optical components and precision magnetic fields are very sensitive to the fluctuation of the flow
.
The continuous monitoring of flow, especially the monitoring and interlock control of the lower flow limit, is very important for the safe use of user equipment
.
3.
The circulating pressure fluctuation of the precision chiller also has different effects on the cooled parts
.
Some parts require smooth pressure, or some parts cannot withstand excessive pressure, or cannot withstand the shock of pressure at initial start-up
.
In the technical scheme of precision chillers, these have corresponding solutions to meet the actual needs of users
.
4.
The cleanliness of water quality is also a regular requirement for precision chillers, usually using physical methods such as filters, membrane permeation, and ion exchange
.
Deionized water can also be used directly
.
The mainstream indicators are generally expressed by resistivity or conductivity, and a certain conductivity or resistivity needs to be met in the entire chiller circulation system, with automatic control at the same time
.
At present, the common method to improve conductivity is to directly use deionized water, or to control the number of ions in the circulating system through ion exchange resin
.
In some special application scenarios, there may be some other indicators, but in general, the main ones are the above four indicators, temperature, flow, pressure, cleanliness (conductivity)
.
For example, the large-scale tools in basic scientific research are accelerators or synchrotron radiation sources, and electron-positron colliders.
Similar applications rely on precision magnets to accelerate high-energy particles.
The machining accuracy of the magnet itself is very high, and the mechanical error is required to be ±3μm.
, The temperature control of the magnet is also relatively high, and the thermal expansion and contraction caused by temperature fluctuations will seriously affect the accuracy of the magnet
.
In Beijing, Shanghai, Hefei, Mianyang, and Lanzhou, Changliu Instruments provides precision chillers with different cooling power, and the temperature control accuracy is ±0.
01℃ or higher, which well meets the cooling requirements of large precision equipment
.
In addition to temperature, the measurement and control requirements for pressure, flow, and cleanliness (conductivity), different application scenarios have different technical characteristics, and the technical indicators of precision chillers need to meet the specific application needs of users
.
The above are the application fields and four technical indicators of the precision chiller brought to users by Changliu Instrument.
If you have any questions, you can contact us at any time, and we will serve you wholeheartedly.
.
