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:
“He receives comfort like cold porridge.”
—William Shakespeare (1564–1616)
“But not luck
brought us here. By design
clear air and cold wind polish
the river lights, by design
we are to live now in a new place.”
—Denise Levertov (b. 1923)
“Thine age asks ease, and since thy duties be
To warm the world, that’s done in warming us.
Shine here to us, and thou art everywhere;
This bed thy center is, these walls, thy sphere.”
—John Donne (1572–1631)
“I asked, “What happens, father, when you die?”
He told where all the running water goes,
And dressed me gently in my little clothes.”
—Robert Pack (b. 1929)
“The conversion of a savage to Christianity is the conversion of Christianity to savagery.”
—George Bernard Shaw (1856–1950)