Compression chiller has the same four main components of the air conditioning compressor, evaporator, condenser and a metering device. These components of larger size, compression chiller) in order to meet the increased quantity of refrigerant in the system. Reciprocating, scroll, screw and centrifugal compressor are the type most commonly found in compression systems. The role of the compressor in these systems is that "steam pump." It reduces blood pressure in the evaporator to boiling refrigerantusually 38 F (3C) for cooling. Compressor builds pressure in the condenser so vapor will condense into a liquid for reuse in the evaporator. Condensing temperature should be about 105F (40 C). These temperatures can be used to determine if hmm, acting within their design parameters.
The standard cooler rating on the basis of the ARI Standard 590 requires 44F (7C)leaving the water, the temperature of the coolant at 105F (40C) and 120F (49C) temperature of condensation; and 95F (35C) water outlet off with a capacitor 10F (5.5DC) rise.
Chillers are also identified as high pressure or low pressure, depending on the operating pressure in the system.
fiigh pressure, wherein the units used primarily for the production of comfortable conditions. High working pressures will determine the size of the unit, required to achieve a cooling problem. An example of this is the 20-storey shopping and office buildings. This may require a 400-ton unit to maintain the necessary temperature. This type of installation are classified as high pressure, chiller system.
The term low-pressure chillers are used for identification chillers, which are used where there is a very low evaporator temperatures required. Most of the components of the low-pressure units, similar to the high-pressure system. Thus, the operation is very similar. High and low pressure centrifugal almost identical. The following sections provide a high-pressure water chillers.
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