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Air cooled chiller unit (twin-screw)
The air-cooled screw chiller is named after its key component, the compressor, which uses a screw type. The refrigerant that comes out of the evaporat
Product details
Six characteristics of screw type unit
1. Performance**
The host adopts the internationally advanced third-generation 5:6 asymmetric rotor toothed semi enclosed screw compressor, with integrated motor and compressor, and no leakage concerns of shaft seals
Two or more compressors have cyclic start and stop control programs to balance the load of each head component and extend the service life of the unit
Two or more compressors use multiple sets of refrigeration circuits. When one circuit needs maintenance, the other circuits can still operate normally and have backup functions
The compressor adopts unloading and voltage reduction starting to avoid impact on the power grid
2. Easy installation
The unit has a compact structure, occupies a small area, and saves space in the computer room
When the whole machine leaves the factory, it has undergone strict debugging and scheduled operation, and can reach the state of on-site use
The unit has minimal vibration, and the foundation does not require vibration isolation measures, making installation simple
During installation, only the evaporator chilled water pipe and condenser cooling water pipe need to be connected
3. Low operation and maintenance costs
The unit can implement intelligent program control according to the demand of the load: capacity control from 0-25-50-75-100, saving energy consumption
The total number of parts in screw compressors is only one tenth of that of reciprocating compressors, with a simple structure, few vulnerable parts, insensitivity to humidity stroke, and extremely low failure rate
Built in oil separator, using a three-stage oil filtration mechanism, oil and gas separation, wrapped design, can reduce the operating noise of the compressor to a reasonable range
The fault free operation rate of screw compressors can reach over 40000 hours
4. Complete security protection functions
Pressure protection: High voltage protection and low voltage protection electrical automatic protection devices
Motor protection: undervoltage protection, phase loss protection, reverse phase protection, overload protection, motor overheating protection, oil shortage protection
Anti freezing protection: When the temperature of the chilled water is too low, the unit will automatically shut down
● Safety valve protection: When the refrigerant pressure exceeds a certain value, the safety exhaust valve will automatically open
5. Humanized microcomputer control system
The standard version is the Japanese Bangpu microcomputer control system, with full Chinese display and easy operation
Special version is optional, Japan Bangpu PLC programmable touch controller, human-machine interface, fully displayed in Chinese
● Automatic monitoring of cold water outlet temperature, the system adjusts the compressor automatically to effectively reduce on-site usage load
The display screen is intuitive and clear, and various data during operation can be read out at any time for reference
● In case of a malfunction, it can automatically sound an alarm in a timely manner and issue a fault code to prompt for handling
● Can output relevant feedback information to other main control systems according to on-site needs
The original content can be modified according to the needs on site, such as the location of the capacity adjustment, various protection points of the unit, pressure, etc
6. Strong adaptability and wide application
Applied in various fields such as rubber, plastics, petroleum, chemical, electronics, papermaking, textiles, brewing, pharmaceuticals, machinery, food, beverages, vacuum coating, electroplating, central air conditioning, etc
This model series is commonly used for centralized cooling, which facilitates centralized management
Can be customized as acid and alkali resistant models to meet the special needs of customers' special processes
Can be customized as a low-temperature model, combined with low-temperature refrigerant to meet the special needs of customers' special processes
1. Performance**
The host adopts the internationally advanced third-generation 5:6 asymmetric rotor toothed semi enclosed screw compressor, with integrated motor and compressor, and no leakage concerns of shaft seals
Two or more compressors have cyclic start and stop control programs to balance the load of each head component and extend the service life of the unit
Two or more compressors use multiple sets of refrigeration circuits. When one circuit needs maintenance, the other circuits can still operate normally and have backup functions
The compressor adopts unloading and voltage reduction starting to avoid impact on the power grid
2. Easy installation
The unit has a compact structure, occupies a small area, and saves space in the computer room
When the whole machine leaves the factory, it has undergone strict debugging and scheduled operation, and can reach the state of on-site use
The unit has minimal vibration, and the foundation does not require vibration isolation measures, making installation simple
During installation, only the evaporator chilled water pipe and condenser cooling water pipe need to be connected
3. Low operation and maintenance costs
The unit can implement intelligent program control according to the demand of the load: capacity control from 0-25-50-75-100, saving energy consumption
The total number of parts in screw compressors is only one tenth of that of reciprocating compressors, with a simple structure, few vulnerable parts, insensitivity to humidity stroke, and extremely low failure rate
Built in oil separator, using a three-stage oil filtration mechanism, oil and gas separation, wrapped design, can reduce the operating noise of the compressor to a reasonable range
The fault free operation rate of screw compressors can reach over 40000 hours
4. Complete security protection functions
Pressure protection: High voltage protection and low voltage protection electrical automatic protection devices
Motor protection: undervoltage protection, phase loss protection, reverse phase protection, overload protection, motor overheating protection, oil shortage protection
Anti freezing protection: When the temperature of the chilled water is too low, the unit will automatically shut down
● Safety valve protection: When the refrigerant pressure exceeds a certain value, the safety exhaust valve will automatically open
5. Humanized microcomputer control system
The standard version is the Japanese Bangpu microcomputer control system, with full Chinese display and easy operation
Special version is optional, Japan Bangpu PLC programmable touch controller, human-machine interface, fully displayed in Chinese
● Automatic monitoring of cold water outlet temperature, the system adjusts the compressor automatically to effectively reduce on-site usage load
The display screen is intuitive and clear, and various data during operation can be read out at any time for reference
● In case of a malfunction, it can automatically sound an alarm in a timely manner and issue a fault code to prompt for handling
● Can output relevant feedback information to other main control systems according to on-site needs
The original content can be modified according to the needs on site, such as the location of the capacity adjustment, various protection points of the unit, pressure, etc
6. Strong adaptability and wide application
Applied in various fields such as rubber, plastics, petroleum, chemical, electronics, papermaking, textiles, brewing, pharmaceuticals, machinery, food, beverages, vacuum coating, electroplating, central air conditioning, etc
This model series is commonly used for centralized cooling, which facilitates centralized management
Can be customized as acid and alkali resistant models to meet the special needs of customers' special processes
Can be customized as a low-temperature model, combined with low-temperature refrigerant to meet the special needs of customers' special processes
Specification parameter download: air-cooled twin-screw unit parameter 1
Parameters of air-cooled twin-screw unit 2
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