Nystrom, John W. (John William), 1824-1885 · Philadelphia, J.B. Lippincott · leaf 319
of blast pipe>to be as straiSht as possible. a = area in sq. in. tuyeres or outlet. C= cubic feet of air delivered per minute. h = inches of mercury. v = velocity in feet per second through a. k = volume coefficient, see Table, page 287. n = revolutions of fan per minute. H= actual horse power… … W Formulas for Fans. _ dn*= 60000000 V 11 25 ar\-dl H= A I Tin24000 h = 24000 Hdin v = nyj< */28-86 \/ 24000 H dl 25 a-\-d I dlhvak C= —26 C=94=ah\7h 94 fc s/ 8910 V = 244y h ----- i Example 1. A fan of d=36 inches diameter, 1=12 inches, making n=725revolutions per minute, area of tuyere being…
Mechanical engineering · Engineering
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