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Lethbridge Herald Newspaper Archives

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Lethbridge Herald, The (Newspaper) - October 11, 1972, Lethbridge, Alberta y, Oclobor IT, 1W2 THI LETHBKIDOl HtRAlD Scientists after solution to ease U.S. energy crisis By FllANK CAREY Al1 Science Writer "WASHINGTON (AP) Whisk yourself into tlic 21st century. Giant windmills whirl offshore. Floating energy plants rely on differences in (he ocean's temperature. Overhead, dumbbell-shaped spacecraft capture the power of the sun. So go the visions of scientists seeking to ease the growing U.S. energy crisis as current, environmentally acceptable sources of energy diminish. None of the proposals to cap- lure the force of the winds, I he -tides, tropical ocean currents or solar energy may prove practical. But each possible way of ob- taining energy, both con- ventional and unconventional by today's terms, is being as- sessed by scientists Nixon administration orders to seek new sources of energy- Directing the study is the White House office of science and technology to which 11 ad- visory groups arc to report soon. WOULD WINDMILLS The proposal to harness tiic winds envisions huge windmills located 10 or more miles off the New England and New York coasts and fixed atop 150-foo steel towers rising from sta tionary floating platforms o anchored directly to the seabed of the continental shelf. Hie windmills, propelled by steady westerly winds that sweep over the Atlantic, pro- duce electricity that is used to convert ocean water into oxy- gen and hydrogen. The hydro- gen then is shipped ashore vhcrc it is combined in fuel cells with readily available oxy- gen in a manner that produces enough electrily to supply all of New England and New York. Fresh water is a by-product of this proposed process. Another scheme for produc- ing electricity proposes use of floating heat engines that are fed on one side by warm water from the Gulf Stream's surface and on the other side by near- freezing water piped upward from the seabed more than one- half mile below the surface. The thermal gradient, or sharp temperature difference between the two sources of tcr in the Gulf Stream, pro- motes the whirling of turbines for the production of electricity. As with the windmill pro- posal, the ocean-generated elec- tricity is used to produce hydrogen gas for combination in energy-producing fuels cells ashore. A third proposal for creating electricity envisions a giant, dumbbell-shaped unmanned spacecraft that orbits the planet at an altitude of miles and remains above the same spot on the rotating earth. The satellite, equipped with a 25-sqiiare-mile array of solar cells, captures the intense sun- light at that altitude, trans- forms it into a strong electric current and converts the cur- rent to radar-like waves that arc beamed (o earth. A 3G-square-mitc ground an- tenna picks up the radar beams are converted back into nough electricity to supply arge metropolitan areas. Still another proposal calh or solar farms that tap energy roni the sun in such clear weather states as Arizona and Mexico. The farms consist of thou sands of acres of arid land cov cred an array of hollo; .ubes coated with a specia chemical film and filled with heat exchange fluid. The tube absorb the sun's radiation an retain most of it; the heat e> change fluid converts the rad ntion to heat which is used 1 produce electricity-gcneratin steam. There are these other poss bilities for obtaining electricitj coastal areas of 11 Bay of Fuudy between Mail and Nova Scotia and along th coast of Alaska, huge dam capture high-tide waters a release them at low tide. The out-rushing water fro these geographic points, wni and semi-weekly newspapers the company announced- today KODKNTS The six cutting teeth of hares and rabbits differentiate them from rodents, which have four. Slart somelhing good today wilh Canada Savings Bonds! They're the go-ahead way lo save lor the lulure withoul worry. Canada Savings Bonds are sale. They're backed by all ihe resources of Canada ond ihey pay good interest year aller year. New Canada Savings Bonds yield an average of 7.30% o year when held lo maturity. Each bond begins wilh interest lor the first year, poys interest lor the second year, pays interest for each ol the next iour years, and then pays interest for each oi the last six years. On top of this you can earn interes! on your interesl and make each grow lo in just 12 years. Canada Savings Bonds are instant cash. They can be redeemed anytime al your bank al their full lace value plus, earned interest. Canada Savings Bonds are easy to buy. They're available in amounts ranging Irorn up lo a limil of You can buy ihem in ihree different ways: (al for cash where you work, bonk or invest Ibl on instalments ihrough the Payroll Savings Plan where you work Icl or on instalment through the Monthly Savings Plan where you bank or invest. Go ahead! Slarl something good todoy! Buy Canada Savings Bonds. 7.30% AVERAGE ANNUAL INTIRSI TO MMURSTf THURS. aetd FRI. ALL FLARE BELL BOTTOMS FAMOUS CALIFORNIA JEANS Whites Patterns Two Tones G.W.G. and MALE GASLIGHT are the headquarters for LCVU 'he famous California Jean WESTERN WESR We Take Grain In Trade 308 5th STREET S. PHONE 328-4726 ALES FINAL ;