centrifugal chiller, How it works ||

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Издатель Apr 4, 2021

centrifugal chiller, How it works ||

How Do Centrifugal Chillers Works?

There are four basic components of the refrigeration cycle.

Evaporator

An evaporator in a centrifugal water-cooled chiller is the heat exchanger that removes heat from the entering chilled water. A shell and tube heat exchanger is the most common configuration.
The heat changes the refrigerant from a liquid to a gas. A flooded evaporator is an energy-efficient choice. Chilled water circulates in the tubes and refrigerant completely submerges the tubes in the shell.

Compressor

A centrifugal compressor converts rotational kinetic energy to the dynamic energy of fluid flow. Refrigerant enters the pump impeller and is accelerated, flowing radially outward, then exits. A frictionless centrifugal compressor uses magnetic bearing technology and a DC (direct current) motor drive.
The process raises the pressure of the refrigerant by converting kinetic energy into pressure and heat.

Condenser

Similar to an evaporator, a condenser is also typically a shell and tube heat exchanger. The condenser removes heat from the refrigerant gas. The pressurized refrigerant condenses to a liquid.
The heat raises the temperature of circulating condenser water The condenser water then carries the heat away to the cooling tower where the excess heat is ejected to the atmosphere.

Expansion Device

After the refrigerant condenses to a liquid, it passes through a device to reduce pressure. It can be a simple orifice plate or an electronic modulating valve.

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