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Cooler Chillers

A chiller is a machine that removes heat from a liquid via a vapor-compression, Adsorption refrigeration cycles. This liquid can then be circulated through a heat exchanger to cool equipment, or another process stream (such as air or process water). As a necessary by-product, refrigeration creates waste heat that must be exhausted to ambience, or for greater efficiency, recovered for heating purposes.[citation needed] Vapor compression chillers may use any of a number of different types of compressors. Most common today are the hermetic scroll, semi-hermetic screw, or centrifugal compressors. The condensing side of the chiller can be either air or water cooled. Even when water cooled, the chiller is often cooled by an induced or forced draft cooling tower. Absorption and adsorption chillers require a heat source to function.

Chilled water is used to cool and dehumidify air in mid- to large-size commercial, industrial, and institutional facilities. Water chillers can be water-cooled, air-cooled, or evaporatively cooled. Water-cooled systems can provide efficiency and environmental impact advantages over air-cooled systems.

Regular Maintenance Keeps Chiller Efficiency High. To help today’s high efficiency chillers maintain those efficiencies in the field, their major components — tubes, oil, compressor, condenser, refrigerant, and starting equipment, to name a few — need to be inspected and maintained regularly.

Industrial Chiller Maintenance Checklist. Inspection of all water inlets and outlets for leaks should be done routinely. All components of the compressor unit should be inspected including checks for oil levels, leaks, vibrations, operating temperatures variations. Electrical contacts should be inspected and cleaned.