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_ Catholic . board okays _â€" _ drug film Some trustees felt the slide presentation should not be viewed in its entirety. The big objection came from trustee Alf Dietrich, who felt criminal penalties on drug abuse should not be included when the 20â€"minute slide presenâ€" tation is given in schools. In a recommendation made by education committee chairman Mark Reitzel, the board approved the use of a new Waterioo Reâ€" gional Police film on the subject of drugs. Reitzel overcame this difficulty in his recommendation by making the proviso By Ray Martin The region‘s Grade 7 and 8 Catholic students will be better informed about drug abuse as the result of a decision made by the Waterioo county separate school board recently. New furnace could mean lower price UW RESEARCH The professor is Dr. Harry Sulliv@n, a mechanical engineer with a good deal of experience in combustion reserach. Special to the Chronicle At a time when people are talking a great deal about the new "high efficiency‘‘ furnaces, a University of Waterloo (UW) engineering professor is developâ€" ing an idea that promises both higher efficiency and a lower price tag than anything currently on the market. The conventionally designed furnaces on the market today have steadyâ€"state efficiency ratâ€" ings of about 80 per cent, alâ€" though seasonal efficiencies are considerably lower, Sullivan says. He says a small prototype furnace, using his new ideas, has attained efficiencies of as high as 95 per cent. . Yet, since most furnaces are on for only 10 to 15 minutes at a time, they don‘t get a chance to reach peak efficiency. In fact, most of the furnaces rated at 80 per cent efficiency probably run at about 60 ‘per cent or less in dayâ€"toâ€"day opérations in homes. The probilem with this is that the exchanger cools the departâ€" ing gases and results in condenâ€" sation of the water in the flue The key to the high efficiency rating of Sullivan‘s furnace (and other new furnaces about to be marketed), is a heat exchanger that uses heat from departing gases to prewarm the air subâ€" sequently circulated throughout . In his recommendaâ€" tion he suggested the board include on the committee one trustee, one senior high school principal, one junior high school principal, a member of the matheâ€" matics subject council, a member of the teachâ€" ers‘ federation and a teacher. Another stipuilation put into the recommenâ€" dation was that any part of the presentation which a principal found offensive could be deâ€" leted before it w._s shown. In other business, Reitzel proposed a computer study comâ€" mittee be struck to examine the impact of the machine on the elassroom and its posâ€" sible use. that the presentation be used as additional resource material and not be used just by itâ€" self. products, which in turn leaves weak acid deposits on the inside of the furnace heat exchanger. These weak acids would norâ€" mally corrode a metal furnace and cut downits lifespan drastiâ€" cally, so Sullivan‘s design inâ€" volves the use of a plastic heat exchanger for the last stage of the heat transfer inside the furâ€" nace. Since the plastic is a lowâ€"cost material it makes it possible to add the large amounts of heat transfer area required at reasonâ€" able cost. All condensing furnace designs eliminate the traditional chimâ€" ney, replacing it with a smali blower to exhaust the cooledâ€" down flue gases. . ‘"‘We know from our lab model that the concept is sound, and our use of cheaper materials should mean such a furnace could be manufactured and sold for less than the current prices of conâ€" densing furnaces," says Dr. Sulâ€" livan. Sullivan‘s work is being carâ€" ried out for The Consumers‘ Gas Co. and is funded by the departâ€" ment of energy, mines and re sources. A second phase of the study has been proposed to develop protoâ€" type models during the coming year for possible field testing during the 1982â€"83 heating seaâ€" ‘‘But we really don‘t know for sure. less than the current price ... until he tries." Almost everyone feels he can build something for substantially NuW. H. FURNITURE SERVICE â€"W. H. FURNITURE SERVICE WATERLOO CHRONICLE, TUESDAY, DECEMBER 22, 1981 â€" PAGE 6 550 PARKSIDE DRIVE â€" WATERLOO AMPLE FREE PARKING â€" 888â€"7630 wet we ciosen ouc. 24 /01 JA a joe