Advantages and Disadvantages of Screw Chiller vs Centrifugal Chiller

Screw chiller with screw compressors

Screw chiller has water cooled chillers and air cooled chiller. Water cooled chiller need to work with cooling towers.

Screw Chiller Advantages:

  1. Simple structure, fewer moving parts, less wearing parts, only 1/10 of the piston type, low failure rate, and long life screw compressor.
  2. Screw compressors screw chiller has a smooth circular motion, no “surge” phenomenon during the low load operation, low noise, and low vibration.

screw compressor

Screw Compressor

  1. The screw compressors compression ratio can be as high as 20, and the EER value is high.
  2. Convenient adjustment, stepless adjustment within the range of 10% to 100%, high efficiency at part load, and significant power saving.
  3. Small size and lightweight, can be built into a fully enclosed large capacity unit, because of screw compressor.
  4. Screw chillers with screw compressors are not sensitive to wet stroke.
  5. It belongs to positive pressure operation, and there is no problem of external air intrusion and corrosion.Advantages and disadvantages of screw chiller and centrifugal chillerAdvantages and disadvantages of screw chiller and centrifugal chiller

Disadvantages:

  1. The price is higher than the piston type.
  2. The capacity of the single machine is smaller than that of the centrifugal type, and the rotation speed is lower than that of the centrifugal type variable speed.
  3. The lubricating oil system is more complicated and consumes more oil.
  4. The large-capacity unit has higher noise than the centrifugal type.
  5. High machining accuracy and assembly accuracy are required

Does Screw Chillers is Water Cooled Chillers or Air cooled chiller?

Chiller system can be water cooled chiller systems, which is water cooled chiller and cooling tower.

Cooling tower is for cooling the condenser heat exchangers of the water cooled chiller.

Water cooled chiller and centrifugal compressor chiller all need placed in the mechanical room.

Mechanical room can protect the water cooled condenser and heat exchanger.

Screw chiller different from scroll compressor chiller on the chiller capacity control.

Scroll chillers with multiple scroll compressors

Scroll chillers with multiple scroll compressors

 

Water cooled chiller also can have multiple compressors, scroll compressors also can have multiple compressors.

Water Cooling Tower

Water Cooling Tower

 

2. Centrifugal chillers

Advantage of centrifugal chillers:

  1. The impeller has a high rotation speed, large gas transmission volume, and large single machine capacity.
  2. Fewer wearing parts, reliable work, compact structure, stable operation, small vibration, and low noise.
  3. The weighted index per unit cooling capacity is small.
  4. No lubricant is mixed in the refrigerant, and the heat transfer performance of the evaporator and the condenser is good.
  5. The EER value is high and the theoretical value can be reached. 6.996. Easy adjustment, stepless adjustment within 10% ~ 100%.

Scroll Compressor

Scroll Compressors

 

Disadvantages of centrifugal chillers:

  1. The single-stage compressor will appear “surge” phenomenon at low load and run smoothly at full load.
  2. Centrifugal chillers Strict requirements on material strength, processing accuracy, and manufacturing quality.
  3. When the operating conditions deviate from the design conditions, the efficiency decreases faster, and the cooling capacity decreases faster than the piston type as the evaporation temperature decreases.
  4. Centrifugal negative pressure system, outside air, is easy to invade, there is a risk of chemical changes corroding pipelines.

Water cooled system with only one compressor

Water cooled system with only one compressor

What is a screw chiller, what are the benefits of using them, and why they might be the best solution for you?

A screw chiller is a food processing machinery that helps to chill and cool the food.

It is a refrigeration machine that uses a rotating screw to force the liquid or gas around it.

It also has an inlet for water or other coolant, which circulates through pipes within the screw.

The machine works by pulling heat out of the process material and transferring it to the water or other coolant.

The benefits of using them are numerous.

What To Consider When Buying A Screw Chiller?

When buying a screw chiller, there are many factors to consider.

You should first ask yourself what kind of cooling you need.

There are different types of screw chillers for different applications.

For example, if you need to cool a product quickly for shelf life purposes, you will want to buy a high-speed screw chiller that can cool products at speeds of up to 300°F per minute.

In the food industry, it is important to keep in mind that some products require more or less cooling than others.

For example, dairy products require less cooling than meat products and produce requires more chilling than meat because it is not as dense and contains more water content.

Screw chillers are used in a variety of industries, and they help to save time by using the liquid nitrogen to cool down the temperature.

The food manufacturing process is one of the most common areas where screw chillers are used. They are also used in laboratories, hospitals and other medical facilities. There are many other use cases for these amazing machines, and we will explore them below!

What are the Different Types of Screw Chiller Systems Available in the Market

Screw Chillers are used in the food industry to cool the product. They are used in the meat and dairy industries, as well as in some industrial applications.

There are two types of screw chillers available in the market – one is a single-screw chiller and another is a double-screw chiller. The single-screw chiller has a single screw that rotates at high speeds, while the double-screw chiller has two screws rotating at high speeds.

The main difference between these two types of screw chillers is that the double-screw chiller can achieve higher temperatures than a single screw system can provide.

They are efficient in terms of energy consumption, they are fast with cooling capacity, they can be used for both hot and cold products, they have low maintenance costs and they have a small footprint which makes them easy to transport.

Geson water cooled chillers and air cooled chiller product range cover Industrial Process Chillers Refrigeration and Commercial Central air-conditioning, including Water cooled chillers,  Air cooled chillers, Screw Chillers, Scroll Chillers, Centrifugal chillers, Water(ground) source heat pumps, Air source heat pumps, Absorption chiller, mechanical compressor, Cooling Towers and etc., Capacity from 2tons~4000tons, and temperature from -160℃~30℃, complete full right chiller product series, air or water cooled for customers.

Geson Industrial processes chillers involve all chiller types, and you can do chiller selection according to chiller types, operating cost, energy efficiency building load, energy consumption, variable speed, compressor technology, operating time, part load, air or water-cooled chiller types, fully serviceable or less equipment, maintenance costs, whether need large buildings, so also can design from the building owners advice.

Read more about GESON industrial chiller manufacturer, industrial process chiller manufacturers, water cooled chillers, get multiple chillers, air cooled chillers offer for you, pls visit www.linkedin.com/in/gesonchiller

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