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ArNZA�N WArwa <br /> Working to Restore Nature <br /> ATC Application <br /> Unocal Station No 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> Page Five <br /> CALCULATIONS <br /> Phase 1 <br /> Inlet Temp = 80°F (ambient) <br /> Maximum Oxidation Temperature = 1450°F <br /> MATERIAL ENTERING AND LEAVING EQUIPMENT <br /> Maximum air flow rate at 200 scfm <br /> 20� 0 ft-3) 60min 0 075 IN = 900 lb air <br /> min hr ft3 hr <br /> Fuel Requirements <br /> Raise air temperature from 100° to 1450° <br /> Heat capacity of air = 24 BTU/°F lb <br /> Density of air = 0 75 Ib/ft3 <br /> Air flow rate = 200 SCFM <br /> 200 ft3 60 min 0( 75__I_h) (24 BTU) (1450 - 100°F = 291,600 BTU <br /> min hr ft3 Ib OF hr <br /> Heating value of natural gas = 1000 BTU/ft3 <br /> (291,600 BTU) ( 1 ft' hr = <br /> hr 1000 BTU 60 min <br /> = <br /> 49 ft3/min = Net Fuel Combustion Products <br /> Extracted Air = 200 SCFM <br /> Combustion Blower = 100 SCFM <br /> Excess combustion air = 100 SCFM + 4 9 SCFM = 104 9 SCFM <br /> Total Outlet gas flow rate = 104 9 SCFM + 200 SCFM = 304 9 SCFM <br />