Experimental engineering and manual for testing. For engineers and for students in engineering laboratories (1906)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & Sons; [etc., etc.] · leaf 755
Fig. 327. … Fig. 328. The blower type of fan is well adapted for pressures whichdo not exceed \ pound per square inch. By arranging blowerfans in series, so that a fan working at low pressure suppliesair to one working at higher pressure, the air can be compressedeconomically to a pressure of several pounds…
Building materials · Machinery
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