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10-66 It~dustrial ~Vent Jlation <br /> <br />Push nozzle <br /> <br />Push nozzle supply J <br />Qs=Qg x L <br /> <br />Exhaust flow (O£) <br /> <br />denum <br /> <br /> Exhaust opening height(h) <br /> <br /> Nozzle angle ~ <br /> <br />% .o,om of hood <br /> flush, with top <br /> ~ __~- of tank <br /> W <br /> <br /> Nozzle openings -- <br />Push nozzle plenum -- <br /> <br /> Nozzle angle -- <br /> <br /> Push nozzle supply-- <br /> Exhaust flaw- <br /> <br />Exhaust opening height-- <br />Tank surface dimeneions-- <br /> <br />1/8" fo 1/4" slot, or 1/4" diameter holes <br />with .~/4" to 2" spacing. <br /> <br />Clrouler, rectangular or square, plenum <br />cross-sectional area should be at least <br />3 times the total nozzle oreo. <br />0° to 200 down. <br />Qj--243~-j cfm/fi of nozzle plenum lenglh <br /> 2 <br />QE--75 cfm/fl of tank surface area <br />h:O, t 4W <br /> <br />L--length of tank <br />W=width of tank <br /> <br />Design procedure: Select nozzle opening within above limits <br />end calculate pushnozzle supply <br /> <br /> Reference 141,142 <br /> <br />AMERICAN CONieERENCE <br />OF OOVEI~NMENTAL <br />INDUSTRIAL HYGIENISTS <br /> <br />PUSH-?UJ.,£ I-IOOD DESIGN <br /> <br /> <br />