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BOILER EFFICIENCY IN STANDARD UNITS

       * 1 BHP = 34.5 lbs steam/hr

       * 1 BHP = 33,472 Btu/hr

       * 1 BHP = 139.5 sq.ft. E.D.R. (steam)

       * 1 Sq.Ft. E.D.R. (steam) = 240 Btu/hr

       * 1 Sq.Ft. E.D.R. (hot water) = 150 Btu/hr

       * 1 Lb. steam (from and @ 212 °F) = 970 Btu/hr

       * 1 Therm = 100,000 Btu

       AT 80% FUEL TO STEAM EFFICIENCY
       Hourly fuel consumption per BHP:

       * No.6 Oil: 152,000 Btu/gal. = 0.275 gallon/BHP/hr

       * No.5 Oil: 149,000 Btu/gal. = 0.280 gallon/BHP/hr

       * No.2 Oil: 142,000 Btu/gal. = 0.295 gallon/BHP/hr

       * 1000 Btu/cu ft Gas = 42 cu ft/BHP/hr

       * 800 Btu/cu ft Gas = 53 cu ft/BHP/hr

       * 500 Btu/cu ft Gas = 84 cu ft/BHP/hr

       * Therms = 0.42 therms/BHP/hr