. Cranberries; : the national cranberry magazine. Cranberries. "M^w W's®(o\m®'^m STRATOTHERM HEAT SYPHON AVAILABLE IN TANDEM MODEL The StratoTherm Heat Syphon, a warm air circulator which is suspended from the ceiling and redistributes upper-level warm air through a vinyl tube to floor level, is now available in a tandem model, according to Rusth Industries, Beaverton, Oregon, manufacturers of the product. The original design, which has been on the domestic and inter- national market for two years, includes a 6-inch diameter inflat- able vinyl tube which hangs verti- cally from the small
. Cranberries; : the national cranberry magazine. Cranberries. "M^w W's®(o\m®'^m STRATOTHERM HEAT SYPHON AVAILABLE IN TANDEM MODEL The StratoTherm Heat Syphon, a warm air circulator which is suspended from the ceiling and redistributes upper-level warm air through a vinyl tube to floor level, is now available in a tandem model, according to Rusth Industries, Beaverton, Oregon, manufacturers of the product. The original design, which has been on the domestic and inter- national market for two years, includes a 6-inch diameter inflat- able vinyl tube which hangs verti- cally from the small fan housing :'ispended from the ceiling. ^ The tandem model, designed for use in extra-high-ceilinged areas, contains two identical electric motors and fans, one mounted above the other. Whereas the single-motor unit is effective for distances up to 40 feet, the tandem unit is designed to overcome normal static pressure and push the same volume of air a distance of up to 100 feet-vertically and/or later- ally, through the same type of ducting as is used in the single- motor unit. The tandem unit is powered by two fractional horsepower electric motors, each drawing .85 amps and 78 watts. Total power draw when operating is amps and 156 watts; voltage is 110/120 AC cur- rent. One of the motors is enclosed in the single-unit housing assembly; the other motor is located below the first in an elongated sheet metal housing. The air is forced through the inflatable vinyl ducting by two fan blades at the minimum flow of 120 cubic feet per minute. According to Dave Martin, Rusth's vice president of engineer- ing, the StratoTherm takes advan- tage of the basic phenomenon that hot air rises. "Most buildings suffer from heat stratification," he stated. "Users can save up to 24 percent or more on their heating costs; normally the units pay for them- selves in heat savings within one year," he said. Through simple air convection, the StratoTherm devices will raise fl
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