Heating Helper

CHAPTER 1 - STEAMSTEAM CONVERSION FACTORSMULTIPLY BY TO GET•..Boiler Horsepower (BHP) 34.5 Lb. of Steam.. .. .. . . . Water per hour (lb/hr)•..Boiler Horsepower (BHP) 0.069 Gallons of Water Per.. .. . . Minute (GPM)• Sq. Feet of Equivalent Direct 0.000637 Gallons of Water per.. .. .Radiation (EDR). . . Minute(GPM)• Boiler Horsepower (BHP) 33,479 B.T.U.• Boiler Horsepower (BHP) 108 Sq. Feet of Equivalent.... .. . . . Direct Radiation (EDR)• Lbs. of Steam Water 0.002 Gallons of Water perper Hour (lb/hr). . . Minute(GPM)• Lbs. per square inch 2.307 Feet of Water• Lbs. per square inch 2.036 Inch of Mercury• Feet of Water (head) 0.4335 Lbs. per square inch• Inch of Mercury. . 13.6 Inch of Water Column• Gallons of Water. . 8.34 Lbs. of Water• Cubic Feet of Water 7.48 Gallons of Water• Cubic Feet per Minute 62.43 Lbs. of Water per Minute• Cubic Feet per Minute 448.8 Gallons per hour• Cubic Centimeters per 1,400 Parts per billion of Oxygen. .ltr. of Oxygen. .• Lbs. of Condensate 4 Sq. ft. E.D.R.NOTE: Use above factors to match condensate return and boiler feed. .. . equipment with boiler size. .•..Size Condensate Receivers for 1 min. net storage capacity based on. .. return rate..•..Size Boiler Feed Receivers for system capacity.. .(normally estimated at 10 min.).•..Size Condensate Pumps at 2 to 3 times condensate return rate..•..Size Boiler Feed Pumps at 2 times boiler evaporation rate or .. ..14 GPM/boiler HP (continuous running boiler pumps may be sized at. .1-1/2 times boiler evaporation rate or .104 GPM/boiler HP)25