Cooling Pond


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cooling pond

[′kül·iŋ ‚pänd]
(chemical engineering)
Outdoor depression into which hot process water is pumped for purposes of cooling by evaporation, convection, and radiation.

Cooling Pond

 

a natural or artificial open reservoir used to cool the hot circulating water in the circulating water supply systems of steam power plants or industrial enterprises. The water is cooled in the pond chiefly through evaporation and convective heat transfer (water to air). The temperature of the cooled water depends on meteorological conditions—the temperature and humidity of the atmospheric air, the general cloud cover, and the wind speed—and on the temperature of the incoming hot water.

Cooling ponds are relatively simple to operate, and during the greater part of the year, especially in the winter, they can provide a lower water temperature than other coolers. With a cooling pond there is no need to lift the water to a substantial height, as, for example, with cooling towers; thus less electrical power is expended in driving the circulating pumps. A disadvantage is the relatively low specific heat transfer from the pond’s surface, a fact that necessitates the creation of a considerable surface area for the pond.

River floodplains that can be spanned by dams are used in the construction of cooling ponds, as are lakes and dike-enclosed areas outside of watercourses.

V. A. GLADKOV

roof pond

A pond of water on a roof structure that cools a building by evaporation. Because the water increases the thermal mass of the building, it also increases the gain in solar energy, storing the absorbed energy during the day, when it is abundant, for later use.
References in periodicals archive ?
The team identified a concrete core taken from the structure of a nuclear fuel cooling pond contaminated with radioactive isotopes of caesium and strontium, located at the former Hunterston A, Magnox nuclear power station in Ayrshire, southwest Scotland.
Officials in suburban Will County prepared to siphon warm water from a nuclear power plant's cooling pond into the Kankakee River in hopes of melting ice that can jam the channel and push floodwaters over the banks.
Of the sites considered, the Elmendorf Power Plant cooling pond location offered a supply of clean well water, proximity to the brood stock in Ship Creek, and is ideal location for public visitation and education programs.
Visits to the cooling pond, tours through the streets of the deserted city of Pripyat, and feeding fish in the cooling pond are all activities that earn revenue for the government.
There was no cooling pond, so condensing water was pumped into cooling towers, also prominent features of the local landscape.
Not only was the town water expensive, but there was also a risk that adding so much outside water to the system would overfill it, with the possibility of spillage via an effluent pond to the main power station cooling pond, leading to unacceptable chemical content.
Rockwell detailed how the radioactivity in the dumping basin and cooling pond is polluted with DU, PCB's, TCE and other waste.
The leak was caused when a 15-foot crack appeared in a pipe leading to a cooling pond in the Sizewell A reactor in January 2007.
Building on the earlier successful solidification and stabilization of the Cooling Pond, MB2 Excavation and Construction jointly bid this project outside the set-aside framework and won.
We have peregrine falcons nesting on the stack and wetlands are being developed adjacent to the cooling pond," said Dr.
Elsewhere the garden offers everything from herbaceous borders to a cooling pond, a vegetable patch and shaded seating areas.