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, cold, air, warm, water and/or conversion:
“Each dawn is clear
Cold air bites the throat.
Thick frost on the pine bough
Leaps from the tree
snapped by the diesel”
—Gary Snyder (b. 1930)
“Shall I make it clear, boys, for all to apprehend,
Those that will not hear, boys, waiting for the end,
Knowing it is near, boys, trying to pretend,
Sitting in cold fear, boys, waiting for the end?”
—William Empson (1906–1984)
“Success four flights Thursday morning all against twenty one mile wind started from Level with engine power alone speed through air thirty one miles longest 57 second inform Press home Christmas.”
—Orville Wright (1871–1948)
“Two are better than one; because they have a good reward for their labour. For if they fall, the one will lift up his fellow: but woe to him that is alone when he falleth; for he hath not another to help him up. Again, if two lie together, then they have heat: but how can one be warm alone? And if one prevail against him, two shall withstand him; and a threefold cord is not quickly broken.”
—Bible: Hebrew Ecclesiastes, 4:9-12.
“—the main jet
Struggling aloft unti it seems at rest
In the act of rising, until
The very wish of water is reversed,”
—Richard Wilbur (b. 1921)
“The conversion of a savage to Christianity is the conversion of Christianity to savagery.”
—George Bernard Shaw (1856–1950)