Full Description

In colder weather, cooling towers can replace centrifugal chiller machines as a source of chilled water. When wet-bulb temperatures go below 40F (4.5C), the chilled and condenser water circuits are combined, using an integral strainer for keeping the system free of particulate contamination. The cooling towers are used as a refrigerating machine, thereby saving the electrical power needed to run a chiller during cooler weather.
Existing building conditions provide for a constant off-season load of 500 tons (1758 kilowatts), with a maintained chi11ed water temperature of approximately 43F (60C). Temperatures are held constant by varying the tower fan speed, and the chilled water flow rates. Using data from the United States Weather Service, a yearly operating time of 2500 hours can be expected. This translates to an annual operating savings of $87,500 and a project payback of less than two years for this installation.

Citation: Symposium, ASHRAE Transactions, 1984, vol. 90, pt. 2B, Kansas City, MO

Product Details

Published: 1984 Number of Pages: 9File Size: 1 file , 500 KB Product Code(s): D-KC-84-07-2