What Are the Advantages and Disadvantages of Different Water Chiller Type?

Generally speaking, in relatively large refrigeration projects, customers need to customize their own industrial chiller. According to different projects, we may need different types of cooled chillers. And of cause, the different chillers have different prices and are suitable for different occasions. The following is to introduce the advantages and disadvantages of each chiller type. Hopefully it is useful for you when making a choice.

Screw Chiller

Advantages:

1. Simple structure, less moving and wearing parts which is only 1/10 of the piston type, low failure rate, long service life, and low maintenance cost.

2. Circular movement is smooth, Low load operation without the “surge” phenomenon, Low noise, Small vibration, Meet the indoor low noise requirements.

3. Easy to adjust, Stepless adjustment capacity from 10% to 100%, Partial high load efficiency, Significant power saving, Green environmental protection, Resource saving.

4. Small size, light weight. It can be made into vertical hermetic chiller group with large capacity.

5. High safety factor, positive pressure operation, no external gas intrusion corrosion problem.

Disadvantages:

1. The price and production period are higher than the piston chiller.

2. The capacity of the single machine is smaller than that of the centrifugal type, and the speed is lower than that of the centrifugal type chiller.

3. Because the power of the screw compressor is relatively large compared to other compressors, the lubricating oil system is more complex and the fuel consumption is large.

4. The noise is higher than that of the centrifugal chiller.

5. Compared with other types of chiller, the delivery timeof screw chiller is longer because of the high requirement of producing and assembling accuracy.

Split type chiller

Advantages:

1. The environmental requirements are not strict. Split system chiller is using single loop, double loop and series loop, through indoor evaporator and compressor, outdoor air cooled condenser. It is the best choice for companies that cannot adapt to packaged systems.

2. In specific application environments, this split condenser can be used to meet the needs of more industries.

3. In winter, the use of drainage system and water pump anti-freezing protection is reduced, and the use of indoor evaporator reduces noise.

4. Split chiller can put the condenser outside, reduce the indoor occupied area. And it is also suitable for noise-sensitive environment.It can extended service life with indoor evaporators and compressors.

Disadvantages:

1. The indoor and outdoor unit of split type chiller should be installed separately. And it has high requirementsfor installation position, such as outdoor unit should be installed in the ventilation space, no sundries, shelter and other places. For specific case, the indoor unit should be as close as possible to the equipment that needs to be cooled.

2. The production timewill be relatively long if you need to customize the large water chiller machine.

3. Due to the particularity of the split chiller, most of the cases will choose to pack separatelywhen  delivering in the wooden cases. So the cost of freight and packing fee is higher than that of other integrated chiller.

Centrifugal chiller

Advantages:

1. The impeller speed is high, the air flow and the single capacity is large.

2. Less wearing parts, reliable operation, compact structure, smooth operation, low vibration and low noise.

3. The weight of cooling capacity unit is small.

4. There is no lubricating oil mixed in the refrigerant, and the heat transfer performance of the evaporator and condenser is good.

Disadvantages:

1. The single-stage compressor will “surge” at low load and run smoothly at full load.

2. Strict requirements on material strength, processing accuracy and manufacturing quality.

3. When the operating condition deviates from the design condition, the efficiency decreases faster, and the cooling capacity decreases faster with the decrease of the evaporation temperature than the piston type.

4. Because of the centrifugal negative pressure system, external airis easy to invade.This way, there might be a chemical change, thereby corroding the pipeline risk.

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Piston type chiller

Advantages:

1. Simple materials, available general metal materials, easy processing, low cost, cost-effective.

2. The system is simple, easy to lubricate and does not require an exhaust device.

3. Using multi-head, high-speed multi-cylinder, performance can be improved.

Disadvantages:

1. More parts, need to be carefully maintained. It should be  paid more attention to inspection in Summer.

2. Low compression ratio and small cooling capacity.

3. The adjustment performance of the unit head under partial load is poor, and the unloading cylinder adjustment cannot be stepless adjustment.

4. he weight of cooling capacity unitis large.

The above is our common industrial water chillers, I hope this article can answer your question. Besides, we also have many other special industrial refrigeration equipment. If you are interested in any type of chillers, please feel free to contact us. We will be happy to answer your questions or needs as soon as possible.