Feb 2 1974
From The Space Library
The U.S. exported a record $5.125 billion worth of aerospace equipment during 1973 according to Dept. of Commerce figures, the Aerospace Industries Association of America announced. Aerospace ex-ports were 6.4% of total U.S. exports and had increased 34.1% over 1972. Much of the increase was from exports of complete aircraft, which totaled $3.096 billion in 1973, up from $2.028 billion in 1972. (AIA Release 74-3)
Four U.S. schools would be heated by solar power in a National Science Foundation project, the Washington Post reported. The project would evaluate solar energy systems in practical situations. All four systems-in Osseo, Minn.; Boston, Mass.; Baltimore, Md.; and Warrenton, Va.-would augment rather than replace the existing heating systems. The system in the Warrenton school was expected to cut heating costs in the five affected classrooms from $1600 to $10 a year. Built by InterTechnology Corp. under a $173 000 NSF contract, the Warrenton system consisted of a 230-sq-m glass, plastic, and coated metal solar collector through which ran 1-cm pipes. Water heated in the pipes was pumped from the collector into underground storage tanks and from there into conventional hot water radiators. The tanks would provide heat through five straight sunless days. The only outside energy required would be electricity to run the pumps, less than 1% of that required to power a base-board system. (Ringle, W Post, 2 Feb 74, D5)
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