The Mechanics of Pumping Machinery a Text book for Technical Schools And a Guid
The Mechanics of Pumping Machinery a Text book for Technical Schools And a Guid
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In our eReader you can find the full English version of the book. Read The Mechanics of Pumping Machinery a Text book for Technical Schools And a Guid 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 Mechanics of Pumping Machinery a Text book for Technical Schools And a Guid
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2 COS a Introducing in this equation the above value a= 102 34', at which the suction valve is entirely out of action, we get V = Fr(l+ 0-217 + 2-190) = 3'407Fr; that is, about 1/7 times as great as the cylinder volume 2Fr. Of course this increased discharge is accompanied by a corre- spondingly greater expenditure of work.
The numerical values found for a and V in the preceding investigations are in reality modified by the influence of the frictional resistances of the water in the pipes, whic...h were neglected in the above discussion, as was also the hydraulic resistance due to the imparting of a velocity to the water originally at rest, and entering the suction pipe while the aforesaid upward motion through the delivery valve is taking place. In consequence of these resistances the motion of the water is not uniformly retarded, as was assumed. Neverthe- less, the above discussion explains the peculiar result, often observed in practice, that sometimes the actual discharge of a pump is greater than the theoretical discharge.
What to read after The Mechanics of Pumping Machinery a Text book for Technical Schools And a Guid?
You can find similar books in the "Read Also" column, or choose other free books by Julius Weisbach to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
2 COS a Introducing in this equation the above value a= 102 34', at which the suction valve is entirely out of action, we get V = Fr(l+ 0-217 + 2-190) = 3'407Fr; that is, about 1/7 times as great as the cylinder volume 2Fr. Of course this increased discharge is accompanied by a corre- spondingly greater expenditure of work.
The numerical values found for a and V in the preceding investigations are in reality modified by the influence of the frictional resistances of the water in the pipes, whic...h were neglected in the above discussion, as was also the hydraulic resistance due to the imparting of a velocity to the water originally at rest, and entering the suction pipe while the aforesaid upward motion through the delivery valve is taking place. In consequence of these resistances the motion of the water is not uniformly retarded, as was assumed. Neverthe- less, the above discussion explains the peculiar result, often observed in practice, that sometimes the actual discharge of a pump is greater than the theoretical discharge.
What to read after The Mechanics of Pumping Machinery a Text book for Technical Schools And a Guid?
You can find similar books in the "Read Also" column, or choose other free books by Julius Weisbach to read onlineMoreLess
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