The popularity of chillers (chilled water systems) is largely due to their economic efficiency. And not just with the use of refrigerant, these systems use water. Chillers remove heat from the water, which then spreads to other components. Since water is a liquid and the specific heat of combustion, it makes an excellent secondary refrigerant. Water is also inexpensive, non-toxic, and is largely corrosion. Other commonly used secondary refrigerants include: calcium chloride and sodium chloride brines, and propylene glycol, methanol, and glycerin. A number of refrigerants used in chillers. With die EPA regulations, ammonia and HCFC R-22 and R-123 and HFC R-134a is main types are used. Those units which employ brines that are often used for low-temperature refrigeration. Units using the brine can be factory assembled and wired or may be shipped in sections.
drillers are used mainly for large industrial cooling processes and commercial air conditioning. Fig. 24-65 shows overall chilled water system, used for commercial air conditioning.
This system uses one and one compressor refrigerant circuit water-cooled condenser. Note microprocessor control center.
Boring is on the low side of the system. He is responsible for cooling the incoming water. Drilled water is then distributed throughout the building approximately 45F (7C). Removing the internal heat of the building raises H20 temperature of about 5,5C.
Water is returned hmm approximately 55F (13C). In the cooler, he again cool 45F, then recirculated. Many hmm applications, water-cooled condensers also use the tower. Water enters the condenser, the S5F (29C). He takes the heat and leave for about 10F (6C) above (95F [35C]). Water is sent to the tower, in which water is given from above. As the water falls to the bottom, it is cooled by evaporation. Sometimes, forced air fans. Water is cooled up to 85F (29C). It returns through water pumps, back to the condenser. The more descriptive illustration of the flow of water from the tower to the condenser in chiller system is used to cool the building.
Industrial 