Cold Air/warm Water Conversion
In winter in coastal Arctic locations, seawater can be 40 °C (72 °F) warmer than ambient air temperature. Closed-cycle systems could exploit the air-water temperature difference. Eliminating seawater extraction pipes might make a system based on this concept less expensive than OTEC. This technology is due to H. Barjot, who suggested butane as cryogen, because of its boiling point of −0.5 °C (31.1 °F) and its non-solubility in water. Assuming a level of efficiency of realistic 4%, calculations show that the amount of energy generated with one cubic meter water at a temperature of 2 °C (36 °F) in a place with an air temperature of −22 °C (−8 °F) equals the amount of energy generated by letting this cubic meter water run through a hydroelectric plant of 4000 feet (1,200 m) height.
Barjot Polar Power Plants could be located on islands in the polar region or designed as swimming barges or platforms attached to the ice cap. The weather station Myggbuka at Greenlands east coast for example, which is only 2,100 km away from Glasgow, detects monthly mean temperatures below −15 °C (5 °F) during 6 winter months in the year.
Read more about this topic: Ocean Thermal Energy Conversion
Famous quotes containing the words cold, air, warm, water and/or conversion:
“O land of manure and mist, of dirty, cold rain.”
—Petrus Augustus De Genestet (1829–1861)
“At the milliners, the ladies we met were so much dressed, that I should rather have imagined they were making visits than purchases. But what diverted me most was, that we were more frequently served by men than by women; and such men! so finical, so affected! they seemed to understand every part of a woman’s dress better than we do ourselves; and they recommended caps and ribbons with an air of so much importance, that I wished to ask them how long they had left off wearing them.”
—Frances Burney (1752–1840)
“To warm their little Loves the Birds complain:”
—Thomas Gray (1716–1771)
“The history of persecution is a history of endeavors to cheat nature, to make water run up hill, to twist a rope of sand.”
—Ralph Waldo Emerson (1803–1882)
“The conversion of a savage to Christianity is the conversion of Christianity to savagery.”
—George Bernard Shaw (1856–1950)