Tuesday 22 November 2016

Water cooled chiller working principle

What are the components of a chiller? How chiller system works? The process water is the means by which heat transfers from the process to the chiller. Process chillers contain a chemical compoun called a refrigerant.


There are many types of refrigerant and applications depending on the temperatures required but they all work on the basic principle of compression and phase-change. Water-cooled chillers typically last longer than air-cooled chillers.

Air-cooled chillers may last years while water-cooled chillers may last years or more. This may be attributable to the fact that water-cooled chillers are installed indoors, and most air-cooled chiller configurations spend their lives outdoors in the elements. They both have an evaporator, compressor, condenser and an expansion valve. The main difference is that one uses air to fuel condenser cooling and the other uses water. Water Chillers Water chillers are backbone of HVAC cooling systems.


Water chiller is a refrigeration machine which produces chilled water ( Approx Degree C ~ Degree C). The primary function of a chiller is to lower the temperature of water to such value such that it can be used for producing cooling effect in integration with other HVAC components. An air-cooled condenser expels heat (end of the heat-removal process) by blowing cool air across the condenser, moving heat into the atmosphere.

A water-cooled condenser expels heat by circulating cool water through lines in the condenser. The water moves the heat to an external cooling apparatus. York International water-cooled chiller A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle.


This liquid can then be circulated through a heat exchanger to cool equipment , or another process stream (such as air or process water ). To put it simply, industrial chillers cool process fluids. The process fluid absorbs heat from what is being cooled and then goes through the chiller where the heat is removed from the process fluid and transferred to the ambient air. Contrastingly, water - cooled systems work great in high ambient conditions, but the efficiency of cooling towers lowers in humid environments. The reservoir is filled with a liquid or flui water or water mix, to be recirculated. Then the reservoir is linked to the equipment required and then the power is transferred to the chiller.


The functions of water chillers are regulated by the controller. The “chilled water” leaves the evaporator at around 6°C (4°F) and is pushed around the building by the chilled water pump. The chilled water flows up the height of the building to each floor in pipes known as “risers”. A wide variety of water cooled chiller working principle options are available to you, There are water cooled chiller working principle suppliers, mainly located in Asia. The top supplying country or region is China, which supply 1 of water cooled chiller working principle respectively.


That water is pumped through pipes directly into the cooling tower. Cooling tower nozzles are used to spray the water onto to the “fill media”, which slows the water flow down and exposes the maximum amount of water surface area possible for the best air-water contact. When you pass a low-temperature liquid close to objects that you want to cool, heat from those objects is transferred to the liqui which evaporates and takes away the heat in the process.


Water - cooled chillers are normally more energy efficient than air- cooled chillers due to heat rejection to tower water at or near wet-bulb temperatures.

Air- cooled chillers must reject heat at the higher dry-bulb temperature , and thus have a lower average reverse- Carnot cycle effectiveness.

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