A Practical Treatise On the Gases Met With in Coal Mines And the General Princip
A Practical Treatise On the Gases Met With in Coal Mines And the General Princip
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In our eReader you can find the full English version of the book. Read A Practical Treatise On the Gases Met With in Coal Mines And the General Princip 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 A Practical Treatise On the Gases Met With in Coal Mines And the General Princip
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(6. ) To find the area of the section. Multiply the co- efficient of friction, the rubbing surface, and the square of the velocity (in thousands of feet per minute) all into each other, and divide by the pressure on each foot of sectional area. * The foregoing rules embrace only the pressure due to friction, and not that due to the creation of velocity, so that they may be regarded as being true of long pipes and air- ways, as they are given, but as requiring an allowance for the pressure due t...o the velocity in short pipes and air- ways. This allowance renders the rules mush less simple.
Now these rules, which are found out by practical trials or experiments, lead us to many very important conclusions in reference to the best mode of conducting the ventilation of mines ; in proof of which, it would be easy to multiply examples.
These laws of friction may be illustrated by the follow- ing examples : In an air-way 10 feet square =100 feet area, and 25, 000 feet, or nearly five miles long if the velocity of the * If it is preferred to employ in these rules the velocity in feet per minute, in lieu of in thousands of feet per minute, the co-efficient of friction, in lieu of '26881 would become '00000026881; and if the velocity is taken in feet per second it would become '000967716.
What to read after A Practical Treatise On the Gases Met With in Coal Mines And the General Princip?
You can find similar books in the "Read Also" column, or choose other free books by J J Atkinson to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
(6. ) To find the area of the section. Multiply the co- efficient of friction, the rubbing surface, and the square of the velocity (in thousands of feet per minute) all into each other, and divide by the pressure on each foot of sectional area. * The foregoing rules embrace only the pressure due to friction, and not that due to the creation of velocity, so that they may be regarded as being true of long pipes and air- ways, as they are given, but as requiring an allowance for the pressure due t...o the velocity in short pipes and air- ways. This allowance renders the rules mush less simple.
Now these rules, which are found out by practical trials or experiments, lead us to many very important conclusions in reference to the best mode of conducting the ventilation of mines ; in proof of which, it would be easy to multiply examples.
These laws of friction may be illustrated by the follow- ing examples : In an air-way 10 feet square =100 feet area, and 25, 000 feet, or nearly five miles long if the velocity of the * If it is preferred to employ in these rules the velocity in feet per minute, in lieu of in thousands of feet per minute, the co-efficient of friction, in lieu of '26881 would become '00000026881; and if the velocity is taken in feet per second it would become '000967716.
What to read after A Practical Treatise On the Gases Met With in Coal Mines And the General Princip?
You can find similar books in the "Read Also" column, or choose other free books by J J Atkinson to read onlineMoreLess
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