Industrial Chiller - What is it ?

Industrial Chiller - TOC

Industrial chillers are refrigerating machines that are designed to operate at loads from 500 kW. They are widely used both in traditional high-power climate systems and in specialised industries.

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Types of Industrial Chillers

A refrigerator has between one and 1,000 tons of cooling energy. There are three different types of coolers: Water ,Air and condensed evaporative cooler. 

There are four sub-categories in each of the above categories for industrial chillers

  • Reciprocating, 
  • centrifugal, 
  • screw-driven 
  • absorption chillers. 

The first three types are mechanical chillers that are powered by electric motors, steam or gas turbines. An absorption machine is powered by a heat source such as steam and uses no moving parts.

Components of an Industrial Chiller

The mechanical compression cycle has four basic components through which the refrigerant passes: 

– The evaporator 

– The compressor

– The condenser

– The expansion valve. 

The evaporator in the chiller will operate at a lower pressure and lower temperature than the condenser.

How Does an Industrial Chiller Work ?

A industrial chiller uses a mechanical vapor compression refrigeration system that is connected to the process water system through a device called an evaporator. The refrigerant circulates through an evaporator, a compressor, a condenser and an expansion device of a chiller. A thermodynamic process occurs in each of the above components of a cooler. The evaporator functions as a heat exchanger so that the heat captured by the process refrigerant flow is transferred to the refrigerant. As heat transfer takes place, the refrigerant evaporates, changing from a low-pressure liquid to a vapor, while the temperature of the process refrigerant is reduced.

Types of Industrial Chillers Compressors

A industrial chiller uses a mechanical vapor compression refrigeration system that is connected to the process water system through a device called an evaporator. The refrigerant circulates through an evaporator, a compressor, a condenser and an expansion device of a chiller. A thermodynamic process occurs in each of the above components of a cooler. The evaporator functions as a heat exchanger so that the heat captured by the process refrigerant flow is transferred to the refrigerant. As heat transfer takes place, the refrigerant evaporates, changing from a low-pressure liquid to a vapor, while the temperature of the process refrigerant is reduced.

Reciprocating Compressor

A reciprocating compressor  is a compressor that uses pistons driven by a crankshaft. It is used to supply a small amount of refrigerant at a very high pressure. Reciprocating compressors can carry double voltage and range three up to sixty horse power.

The Centrifugal Compressor

Centrifugal compressors have few moving parts which makes them a favorite in the industry. They are also very energy efficient and give a higher flow of refrigerant than a similar sized reciprocating compressor. Centrifugal compressors are more suitable for higher volume, but low pressure applications, such as those using fans, refrigeration units, and air motors. The centrifugal compressor operates by using centrifugal force applied to a mass of air to achieve compression. Typical capacities range from sixty to several hundred tons. These are hermetically sealed, magnetic bearing compressors and are 230 volt or 460 volt.

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Screw Compressor

The screw compressor is almost exactly what it sounds like. There are two screws (male and female) in a screw compressor that fit together in a fixed housing. As the rotors rotate, the gas is compressed by direct volume reduction between the two rotors. These compressors are hermetically sealed semi-compressors, carry dual voltage, and range from 40 to 1000 horsepower. There are also single screw compressors that rely on a single rotating screw passing through two star wheels to provide compression.

Maintenance of industrial Chillers

Industrial chillers are designed to perform with maximum efficiency. Maintenance steps performed on a regular basis will help ensure that the chiller will perform at an optimised efficiency level.

Location of industrial chillers

Large industrial chillers are typically located in mechanical equipment rooms in the building close to the process in which they are being cooled. Some industrial chillers may be located directly next to the process, depending on the size of the chiller and compressor. Some can even be placed completely outdoors.

Large industrial chillers are typically located in mechanical equipment rooms in the building close to the process in which they are being cooled. Some industrial chillers may be located directly next to the process, depending on the size of the chiller and compressor. Some can even be placed completely outdoors.

BONN Cooling Solutions will be happy to work with you to determine which one best fits your needs. Contact us.