1067Water treatment

A good water treatment program is essential to the maintenance of an efficient chilled water system. Filtering the cooling tower water should be evaluated. In some cases, depending on water quality, this can save the user a great deal of money in chemicals. Pretreating new systems prior to initial start-up will also provide longer equipment life and insure proper system performance.

Chiller performance is based on given design parameters and listed in literature provided by the chiller manufacturer. The performance will vary with building load, chilled water temperature, condenser water temperature and fouling factor. The fouling factor is the resistance caused by dirt, scale, silt, rust and other deposits on the surface of the tubes in the chiller and significantly affects the overall heat transfer of the chiller.

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