The Fan Including the Theory And Practice of Centrifugal And Axial Fans
The Fan Including the Theory And Practice of Centrifugal And Axial Fans
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In our eReader you can find the full English version of the book. Read The Fan Including the Theory And Practice of Centrifugal And Axial Fans Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Fan Including the Theory And Practice of Centrifugal And Axial Fans
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Dia. Is given by Q = c A \/2 H, so that ^. AK\2 /A. TQK. R^^O 255 ft. , 3, 600 x 64-4 x (0'65) 2 x (0-7854) Q being cu. Ft. Per sec, A the area of circle 6 in. Dia. In sq. Ft. , and H the head in feet. The head due to the discharge of 451 cu. Ft. Through a 2 ft. Dia. Circle, with probably no contraction, is only 0-089 ft. Walker points out that negative slip has been generally noticed with propellers having thick blades and round backs. Now, his experi- ments show that the flow through fans in ...which the blades are curved back is very much greater than that through fans with plane blades, and this appears to partly explain negative slip. It will be noticed that the mean pitch of the aft edge of the propeller, considering back and face, is greater than the pitch of the face alone.
Walker also carried out some supplementary experi- ments with fans having six, three, and two blades, all of the same shape and set at 30 deg. To the plane of rota- tion. The revolutions were 600 per min. ; the six-bladed fan was tried first, and its alternate blades were then removed so as to form a three-bladed fan.
What to read after The Fan Including the Theory And Practice of Centrifugal And Axial Fans?
You can find similar books in the "Read Also" column, or choose other free books by Charles Herbert Innes to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Dia. Is given by Q = c A \/2 H, so that ^. AK\2 /A. TQK. R^^O 255 ft. , 3, 600 x 64-4 x (0'65) 2 x (0-7854) Q being cu. Ft. Per sec, A the area of circle 6 in. Dia. In sq. Ft. , and H the head in feet. The head due to the discharge of 451 cu. Ft. Through a 2 ft. Dia. Circle, with probably no contraction, is only 0-089 ft. Walker points out that negative slip has been generally noticed with propellers having thick blades and round backs. Now, his experi- ments show that the flow through fans in ...which the blades are curved back is very much greater than that through fans with plane blades, and this appears to partly explain negative slip. It will be noticed that the mean pitch of the aft edge of the propeller, considering back and face, is greater than the pitch of the face alone.
Walker also carried out some supplementary experi- ments with fans having six, three, and two blades, all of the same shape and set at 30 deg. To the plane of rota- tion. The revolutions were 600 per min. ; the six-bladed fan was tried first, and its alternate blades were then removed so as to form a three-bladed fan.
What to read after The Fan Including the Theory And Practice of Centrifugal And Axial Fans?
You can find similar books in the "Read Also" column, or choose other free books by Charles Herbert Innes to read onlineMoreLess
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