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:
“Willows last to relinquish a leaf,
curious, patient, lion-headed, tense
with energy, watching
the serene cold through a curtain
of tarnished strands.”
—Denise Levertov (b. 1923)
“The thundering line of battle stands,
And in the air Death moans and sings:
But Day shall clasp him with strong hands,
And Night shall fold him in soft wings.”
—Julian Grenfell (1888–1915)
“I see slip to the curb the long machines
Out of whose warm and windowed rooms pirouette
Shellacked with silk and light
The hard legs of our women.”
—Karl Shapiro (b. 1913)
“The woman ... turned her melancholy tone into a scolding one. She was not very young, and the wrinkles in her face were filled with drops of water which had fallen from her eyes, which, with the yellowness of her complexion, made a figure not unlike a field in the decline of the year, when the harvest is gathered in and a smart shower of rain has filled the furrows with water. Her voice was so shrill that they all jumped into the coach as fast as they could and drove from the door.”
—Sarah Fielding (1710–1768)
“The conversion of a savage to Christianity is the conversion of Christianity to savagery.”
—George Bernard Shaw (1856–1950)