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1 <br /> Vapor Extraction System Sample Calculations <br /> Moore Petroleum,Inc, 14800 W Frontage Road,Manteca,CA <br />' Effluent vapor flow rate calculations <br /> To calculate the stack flow rate of the RSI vapor extraction system, the manufacturer supplies the <br />' following equation <br /> exhaust flow rate = <br /> 2 revolzitzons 1728 inches' <br /> where, <br /> RPM = engine operating revolutions per minute, 2400 RPM on 8-21-95 <br />' c i d T engine displacement, 140 0 <br /> e efficiency factor, 0 75 (per manufacturers guidelines) <br />' Using this information, the stack flow rate on August 21, 1995 is <br /> exhaust flow rate = """ "' "' 1`"' ' ` u " ' = 73 SCFM <br /> 2 revolutions 1728 inches' <br /> �s 3 <br /> 1 <br />