Cooling capacity: 100kW ~ 4000kW
Outlet water temperature: 7 ℃ ～ - 80 ℃
Product options
1. Brine evaporator
2. Stepless energy regulation
3. Total heat recovery / partial heat recovery
4. Water pump / cooling tower control
5. Special voltage
6. Remote communication interface
Product features
1. Adopt international famous brand twin-screw compressor, enjoy the characteristics of high efficiency, low noise, low wear and long service life.
2. Adopt 4-stage energy regulation or 0% - 100% segmentless automatic regulation.
3. Siemens PLC programmable controller, LCD touch screen, Chinese and English man-machine interface are adopted.
4. Complete fault protection: high and low pressure protection, exhaust protection, oil level protection, water flow protection, reverse missing item protection, freezing water protection, high cooling water protection, etc.
5. Ultra wide variable temperature range of chilled water to meet the requirements of low temperature industrial use.
Product specifications
Refrigerant type: R22 / R407C
Maximum water pressure of evaporator / condenser: 1.0MPa
Evaporator: water side fouling coefficient 0.018m2 ·℃ / kw
Condenser: water side fouling coefficient 0.044m2 ·℃ / kw
Power supply system: 380V / 3phase / 50Hz
Allowable voltage fluctuation: ± 5%
Allowable frequency fluctuation: ± 2%
compressor
If the international brand semi closed 5:6 asymmetric twin screw compressor is selected, the possibility of shaft seal leakage is zero. Adopting the design of double shaft rotary exhaust, using the newly developed fourth generation profile, optimizing the circumferential speed and excellent tooth profile design, the unit has higher compression efficiency. The motor cavity and compression cavity are cast in one, with higher precision. The double-layer pressure compensation rotor shell is very strong, which has no expansion even in the high pressure state, and effectively reduces the noise of the unit.
heat exchanger
The condensers and evaporators of this series of units are shell and tube heat exchangers, which adopt a new type of high efficiency heat exchanger structure. The heat exchanger adopts the most advanced high-efficiency copper tube bundle, with unique geometric characteristics of the heat exchange tube, which enhances the vaporization core required for nucleate boiling outside the tube, strengthens the flow disturbance inside the tube, and delays the scaling on the water side. The inner and outer walls are enhanced for optimal performance. Compared with the previous design, the current unique design improves the heat transfer efficiency by 30%.
The evaporation tube of evaporator adopts the technology of inner spiral groove and outer concave tooth to enhance heat transfer, and the condensation tube of condenser adopts the technology of inner spiral groove and outer twisted tooth, which improves the heat transfer efficiency and evaporation temperature of evaporator and condenser, and finally improves the energy efficiency ratio of the unit.
It has a good full Chinese man-machine dialogue interface, realizes the automatic control of front function, LCD displays the working condition of the machine in real time, accurately monitors the operation of the unit in the best state, and its contact panel is well sealed, waterproof, dustproof, anti-corrosion, and has long key life. It has interlock control function with chilled water pump, cooling water pump and cooling tower fan.
PLC
Low temperature unit
BJ series low temperature water chiller is a well-known brand semi hermetic screw compressor as the host, built-in suction filter, oil filter, oil separator, safety relief valve and protection module, no leakage, low noise, stable operation.
Environmental friendly R407C, R134a or R410A refrigerant can be selected.
Due to technical improvement, the overall dimension is likely to be changed. The overall dimension is for reference only. Please get the installation dimension drawing at any time.
