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� J � fr <br /> .s j <br /> INDUSTRIES, INC. <br /> I <br /> 1 <br />' CALCULATIONS FOR DIRECT FIRED OXIDIZER MANUFACTURED BY <br /> STEALTH INDUSTRIES INCORPORATED <br />' THE 250 CF-24 DIRECT <br /> FIRED THERMAL OXIDIZER <br />' <br /> I. TOTAL MASS FLOW RATE OF CONTAMINATED D AIR <br />' (250 CFM) (60 MINUTES) = 15, 000 SCFH <br /> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1, 1.45 LB/HR <br />' 13 . 1 CUBIC FEET OF AIR PER POUND <br /> 2 . TOTAL HEAT REQiUIRM l TO RAISE AIR TEMPERATURE <br />'• I <br /> EN'T'HALPY OF GAS AT 1400 DEGREES = 341 . 5 BTU/LB <br /> ENTHALPY OF GAS AT 70 DEGREES = 9 . 0 BTU/LB <br />' TOTAL BTU PER LB TO RAISE AIR TEMP. = 332 . 5 BTU/LB <br /> TOTAL BTU REQUIRED TO RAISE Tr-:P. = 380, 712 . 50 BTU <br /> LOSS OF HEAT DUB. TO CONVECTION - 40, 000 . 00 BTU <br /> TOTAL HEAT REQUIREMENT = 420, 712 BTU/HR <br /> I3. TOTAL VOLEME OF NATURAL GAS FOR OXIDIZER <br /> TOTAL HEAT REQUIREMENT = 420, 712 50 BTU <br /> BTU PER CUBIC FOOT OF NATURAL GAS = 670 00 BTU/CF <br /> TOTAL CUBIC FEET OF NAT"JRAL GAS 627 90 SCFH <br /> TOTAL BTU USAGE OF OXIDIZER = 627, 900 BTU/ER <br /> A . VOLU24E RATE OF COMBUSTION- AT 1400 DEGREES <br /> (628 SCFH) (11. 45) (1, 400 + 460) = 13, 374, 516 <br /> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - _ 7. 14 CF/SEC <br /> (3600) (60 + 460) = 1, 872, 000 <br /> 3530 E. Enterprise Drive, Anaheim, CA 92807-1628 <br /> tet: (714) 632-1112 or (800) 632-1112 - faX (714) 632-1177 <br />