what is chiller? How chiller work? types of chillers? |chiller interview types of question in Hindi

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What is a Chiller?
A chiller is a cooling system that removes heat by circulating heat-absorbing a refrigerant through a series of mechanisms through which the heat is released. The essential components of a chiller are a compressor, condenser, expansion valve, and evaporator. They work in unison to circulate a refrigerant that removes heat from a process, operation, or space.
There are several different types of chillers, each of which has a different process for removing heat. All chillers use air or water as a cooling method. For example, air cools a chiller system using fans, while a water-cooled chiller circulates water with a cooling tower.
Aside from the two cooling processes, chillers are further differentiated by the type of compressor they have. Compressors in all chillers have the same function: to compress the refrigerant and increase its temperature and pressure before it moves on to the condenser. There are several variations as to how the compressor completes its function.
How Are Chillers Used?
For many years, industries have searched for ways to provide cooling for manufacturing processes. The basic air conditioner, introduced at the beginning of the twentieth century, could not provide sufficient cooling for large buildings, production processes, high-capacity machinery, and assembly operations.
Technological advances, beginning in the 1950s and continuing into the twenty-first century, have introduced cooling and heat removal equipment capable of producing temperatures that can cool laser cutting and die casting operations. The water baths from the middle of the twentieth century have grown into an essential part of modern manufacturing.
How Chillers Work?
Though there are a wide variety of chillers, the majority of them use the same principle for removing heat. An essential part of the process is the coolant or refrigerant, which holds more heat than water and aids in maintaining an efficient cooling process. Heat is removed from the coolant and released into the air. The concept of a chiller is based on the principle that cooling involves the removal of heat from a process and releasing it into the air.
All chillers have a condenser, compressor, expansion valve, and evaporator that circulate a fluid or refrigerant. The process of a chiller is designed to transform the refrigerant from a liquid to a vapor and back to a liquid. In its vapor form, the refrigerant removes the heat from a process. When it is returned to its liquid form by the compressor and condenser, it circulates back through the system to capture the heat from a process or operation.
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