Gases Met With in Mines ; Mine Ventilation ; Economic Geology of Coal ...
Gases Met With in Mines ; Mine Ventilation ; Economic Geology of Coal ...
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In our eReader you can find the full English version of the book. Read Gases Met With in Mines ; Mine Ventilation ; Economic Geology of Coal ... 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 Gases Met With in Mines ; Mine Ventilation ; Economic Geology of Coal ...
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The pressure required to blow air through an orifice when the mean velocity is given can be found by the formula -(£)• (65.) Example. — If air is blowing through an orifice, such as the entry into a fan, with a velocity of 71.095 feet per second, what will be the pressure or depression required ?
Solution. — Applying formula 65, p = ( — j7r^~) = 15.6 lb. per square foot. Ans.
The following equations show how formulas 64 and 65 are obtained : f 685,600 X j^ = 18 X \/p = v, ^X 2,116 = (£)"=/. Ans....
1028. The following examples will illustrate the use of the formulas given: Example. — The mean velocity of the air blowing into the orifice of entry of a fan is 25.5 feet per second; what is the depression in pounds per square foot required to give this velocity ?
/25 5 v* Solution. — By formula 65, the pressure will be equal to I -r^--) = 2.006 lb. per sq. ft. Ans.
Example. — The pressure by which air is blown into a fan is 2.006 pounds per square foot; what is the mean velocity of the entering air ?
What to read after Gases Met With in Mines ; Mine Ventilation ; Economic Geology of Coal ...?
You can find similar books in the "Read Also" column, or choose other free books by International Correspondence Schools , International Textbook Company , International Textbook Company to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The pressure required to blow air through an orifice when the mean velocity is given can be found by the formula -(£)• (65.) Example. — If air is blowing through an orifice, such as the entry into a fan, with a velocity of 71.095 feet per second, what will be the pressure or depression required ?
Solution. — Applying formula 65, p = ( — j7r^~) = 15.6 lb. per square foot. Ans.
The following equations show how formulas 64 and 65 are obtained : f 685,600 X j^ = 18 X \/p = v, ^X 2,116 = (£)"=/. Ans....
1028. The following examples will illustrate the use of the formulas given: Example. — The mean velocity of the air blowing into the orifice of entry of a fan is 25.5 feet per second; what is the depression in pounds per square foot required to give this velocity ?
/25 5 v* Solution. — By formula 65, the pressure will be equal to I -r^--) = 2.006 lb. per sq. ft. Ans.
Example. — The pressure by which air is blown into a fan is 2.006 pounds per square foot; what is the mean velocity of the entering air ?
What to read after Gases Met With in Mines ; Mine Ventilation ; Economic Geology of Coal ...?
You can find similar books in the "Read Also" column, or choose other free books by International Correspondence Schools , International Textbook Company , International Textbook Company to read onlineMoreLess
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