Comfort cooling towers

Potential pollutant since amount used industrially is large compared with normal biological levels normally relatively unavailable because of low solubility. Cr(Vt) used in comfort cooling towers, environmental hazard. 

Chromium (VI) may not be used as a corrosion inhibitor in comfort cooling towers (CCTs) associated with air conditioning and refrigeration systems. 

Proposed Prohibition Of Hexavalent Chromium Chemiccils In Comfort Cooling Towers, Part V, 40 CFR, Part 749", Federal Register, 1988. 

Presently, the United States accounts for 50% of the world cooling tower market. About 25% of the U.S. market is with the petrochemical industry, 15% involved in personal comfort and 60% with electric power generation [1]. More than twice as many of these towers are mechanical draft, as opposed to natural draft, units. The former type are employed nationwide,... 

When a zone is within the comfort gap, its reheat coil is turned off and its VAV box is closed to the minimum flow required for air refreshment (Figure 2.6). When all the zones are inside the ZEB, HW (hot water), CHW (chilled water), and STM supplies to the airhandler are all closed and the fan is operated at minimum flow. When all other airhandlers are also within the ZEB, the pumping stations, chillers, cooling towers, and HW generators are also turned off. 

FIGURE 1. The Council Tower building in St. Louis underwent a mayor upgrade with the installation of a single-pipe heating and cooling system designed to save money and increase tenant comfort. 

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