What is the cooling of deep water?

in an effort to reduce carbon emissions and use of fossil fuels, some cities around the world have introduced a new type of air conditioning methodology known as refrigeration of deep water . Deep water cooling uses exceptionally cold water, which is far below the surface of many lakes and other water bodies. This cold water, often just a few degrees above the frost, is drawn into the city water system through large suction pipes, where some of them are diverted to water treatment plants for general consumption, but not all. This system is closed, which means that untreated water used for air conditioning is never mixed with the supply of drinking water in the city. Cold water pumped from deep water cooling pipes acts as a thermal sink or heat exchanger. Cold pipes absorb excess heat from warm back pipes, so the water is cold enough to go through the coolers again.

coolThe water used in the deep water cooling system does not become part of the closed cooling system itself. The only purpose is to remove heat from the return pipe instead of using expensive and ecologically harmful cooling system powered by electricity or fossil fuels. The city using deep water cooling technology can save a considerable amount of money annually and also use the natural source of coolant for their swamp radiators.

, however, is not without its challenges. Many cities are not located sufficiently close to the deep water source to, for example, an economically feasible entrance pipe. In order to purchase and install other devices, the cold water must also be purchased and installed in the existing city water system.

The ideal city for the deep water cooling system would be a large metropolis near a major water body such as Ontario, Canada. The city of Ontario has three large suction pipes submerged in a deep partLakes Ontario and cold water from this depth actually act as a natural heat exchanger for the city air conditioning system. Other cities also study the feasibility of deep water cooling, but the initial investment in the equipment and the challenge of finding a suitable source of cold water remains daunting.