ACTIVITY

How a Water Chimer Unit Works

A water chiller unit uses water as a secondary refrigerant to control cooling of products and machinery. It does not create cold, but transfers heat from a space where temperature control is needed to a place where it isn’t. Chillers are particularly useful in large, multi-story buildings because it isn’t practical to pump coolants from a central location all the way around the building to each air handler where temperature control is needed. Instead, a chiller removes heat from water and pumps it to air handlers to be circulated throughout the building.

In addition to energy savings, water-cooled chillers are a safer alternative to air systems because they do not consume chemical refrigerants. However, it is important to maintain the chiller’s condenser water loop to prevent fouling and scaling, which can inhibit water flow and impact chiller operating efficiency.

Industrial water chillers work through a series of essential components, including a compressor, evaporator, expansion valve, and condenser. The compressor pressurizes the refrigerant gas, which raises its temperature before it enters the condenser, where it releases heat and converts to a high-pressure liquid. The liquid then enters the evaporator, where it returns to its low-temperature state as chilled water. This chilled water is then pumped through a piping loop to the air handling units in each climate-controlled space, where it absorbs the ambient heat that was transferred from the air. This cools the air and dehumidifies it, promoting better indoor air quality for occupants. water chiller unit

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