BUSCH water cooled screw chiller unit in chemical fiber air conditioning plant

详情

HS Code:*********0



Model:BBW***0S

Cooling capacity:**0 kW / *2.7 RT

Compressor type:**6 asymmetric semi enclosed twin screw compressor

Power :*2.5 kW

Current power:*6.6A

Evaporator water flow：*5.8m3/h

Evaporator tube diameter:DN *5

Condenser water flow：*2.3m3/h

Condenser tube diameter:DN *5

Refrigerant charge:*5.0 kg

Size:***0mm***0mm****0mm

Weight:***0 kg

Power standard:**0V/**5V/**0V/*3P**0Hz/*0Hz

Refrigerant:R*2/R**7C/R**4a

Non-standard product and design:Acceptable



Screw water - cooled chiller

Screw water-cooled chiller condenser cooling medium and the refrigerant are water chillers are widely used in various fields of central air conditioning, industrial cooling .



1.Precise stable water temperature 

As used for industrial cooling, Low temperature water that produced by water-cooled chiller could send directly to the equipment and containers, which need to keep freezing. In order to control precise stable water temperature, the water comes out of the chiller send to the Buffer pool firstly,then entrance the equipment or containers which need cooling.



2.Y-Star triangle depressurization start mode

Half screw condensing water chillers use Y-Star triangle depressurization start mode. The starting electric current is only about 1.5 to 2 times as run-time current which greatly reducing the impact to the grid 



3.Capacity adjustment 

According to clients' demand, screw water-cooled chiller can automatically adjust load capacity. The standard chiller capacity adjustment is implemented by segmented or non-polar uninstalling method. One single machine can realize four different compressor capacity level, which are **0%, *5%, *0% and *5%. *5% level is used to start compressors. The induction capacity control can be achieved in the range of *5 to **0%. However, in order to ensure the safety and long-term operation of the chillers , do not operate the chiller for a long period in extremely harsh environment or with low cooling capacity, which is less than *0%. Please indicate the use of conditions before ordering.



4.Perfect protection function 

Screw water-cooled chiller have perfect protection function, such as power wrong phase lack protection , system high-voltage protection, system low voltage protection, double antifreeze protection, compressor overload protection, insufficient frozen water cooling protection, prevent frequent start protection, compressor built-in exhaust temperature coil overheat temperature protection and etc. These protection reduces many losses caused by all kinds of accidents .



5.Meet the temperature requirements of various industries

Screw chillers in the use of industrial cooling can be applied to a variety of cryogenic cooling. Adding appropriate antifreeze in the chilled water side can achieve 0C to - *5C water temperature to suit different industrial cooling requirements. The recommended antifreeze additive can be ethylene glycol, sodium chloride and calcium chloride solution. It is recommends that, different concentration level of antifreeze solution should be set according to water temperature. To find out freezing point of a variety of solutions, please refer to the Installation and Use "section.



6.Higher cooling energy efficiency

As the usage of central air conditioning, chillers should be used cooperatively with air - conditioning boxes, fan coil and secondary heat exchanger. Compared with forced air cooling systems, cooling energy efficiency ratio is the biggest advantage of the water-cooled chillers. In standard conditions, COP of screw water-cooled chiller typically can reach 4.6 to 5.0 , customers can achieve substantial cost savings for the customer's use by its significant energy efficiency.



7.External water-cooled plate oil cooling device

In order to fully separate the frozen oil and refrigerants, external centrifugal efficient oil separator is applied to low temperature cold water chiller. This can greatly reduce the amount of frozen oil in the evaporator, which is caused by low temperature. It ensures security of compressor lubrication system and also improves the heat transfer effect of the evaporator.

In order to reduce the possibility of lubricating oil overheating due to high exhaust temperature in low temperature, low temperature chiller using an external water-cooled plate oil cooling device to chill lubricants by cooling water. This method not only reduces the consumption of the cooling capacity , but also stabilizes cooling systems.



8.External liquid spray technology 

To further ensure compressor motor will not be overheated. Screw water-cooled chiller apply external liquid spray technology. With low temperature cooling media directly on the motor, it ensures the long-term and stable operation of the compressors.



9.Environmental Friendly

In order to better protect the atmosphere, it can produce green environmental protection cooling medium refrigeration and air conditioning equipment not only in adopts HFC**7C and HFC**4a,but also in HCFC*2.



*0.Balanced running performance

Many of the chiller with compression, microcomputer automatic memory will be per compressor operation time, start the next time it will be activated running less time compressor. Similar in the discharge of the need, but also will be preferential the operation longer time to uninstall chiller, in order to achieve the balance of each compressor operation, extend the service life of the machine.



*1.Remote control 

Each chiller is occupied with remote control function. The computer controller is equipped with RS**5 standard communication interfaces, open communication protocol. This will allow all kinds of building monitoring system connected and remote monitoring.



*2. Recyclable cold water chiller system

Due to the increasingly energy shortage, waste heat recycling will have a long-term economic value. Basing on this fact, our enterprise developed a heat recycling chiller system, which can fully recycle the condensing waste heat originally released into the environment, which can be used in hotels , dormitories , toiletries and other occasions; If heat recycling technical parameters are needed, please contact our technical department to obtain.



*3.Waste heat & secondary condensation

Without additional consumption of electricity and fuel , the waste heat generated from the chillers can produce domestic hot water. These results can be achieved in almost zero cost, zero pollution, no more other additional devices. The only thing to do is just to directly access water pipeline to access hot water

Due to the secondary condensing progress, it can appreciably reduce condensate temperature and pressure, and it can also raise the efficiency of refrigeration to some extent. 



*4.Compressor & other major refrigeration components

Twin-screw compressor applies the world's most advanced 4th generation asymmetric patent tooth rotor machining by the British HOLROYD rotor and then grinding precision by the German KLINGELNBERG precision rotor grinding machine. This greatly reduces leakage and cooling loss. The usage of advanced three-stage oil network makes the oil filter ratio up to *9.7%, which greatly ensure machine oil return to the compressor , the wide range of built-in protection can ensure the compressor safe operation including small vibration , low noise and high efficiency.

Except compressor refrigeration, other major components are imported quality products, such as the expansion valve , solenoid valve , filter drier , etc, which are all European and American quality products , have reliable performance and precise control .



*5.Touch screen computer interface 

The chiller is controlled by micro-computerized controller, and all are equipped with Germany Siemens PLC imported controller. The accuracy and intelligentize truly achieve perfect control of whole machine in order to ensure safe operation of the unit and the purpose of effective energy conservation. The machine is equipped with touch-screen interface,which is simple and customer-friendly.



*6.Test center 

The enterprise has a well-operated testing center , each air-conditioning unit have been injected refrigerant and refrigerant oil before leaving factory. After undergoing a rigorous simulation of the standard conditions and maximum operating mode detection, expansion valve can be adjusted to the best condition.



Notes: (single , dual , four compressors at room temperature ) default conditions :

1．The parameters in the nominal conditions are as follows: Chilled water inlet / outlet water temperature *2℃/ 7 ℃; cooling water feed / water temperature *0 ℃/ *5 ℃

2. Temperature conditions : chilled water , water temperature range 5 ℃ ~ *5 ℃ , cooling water inlet temperature range of *9 ℃ ~ *3 ℃

3. The evaporator and condenser water side design pressure is 1.0Mpa, the test pressure is 1.6 Mpa

4. Nominal conditions evaporation device water side of the dirt coefficient is 0.**8 m ? ° C / kW

5. In addition to the above specifications and requirements , the company can provide non-standard products according to customer requirements