 | Thomas Tredgold - 1836 - 418 Seiten
...temperature. Rule to find the area of the chimney, when the excess of temperature is 144.° Divide 45 by the square root of the height of the chimney in feet, and the quotient will be the area of the chimney in inches that would be sufficient for producing the... | |
 | 1849 - 604 Seiten
...ascertaining the required degree of contraction : — Let 17 times the length of the grate m inches be divided by the square root of the height of the chimney in feet, and the the quotient is the area for the aperture at the top of the chimney in inches. I had a grate... | |
 | 1849 - 588 Seiten
...degree of contraction is as follou's: — Let 17 times the length of the grate, in inches, be divided by the square root of the height of the chimney, in feet, and the quotient will be the area in inches, of the section of the aperture at the top of the chimney.... | |
 | John Bourne (C.E.) - 1850 - 298 Seiten
...for the dimensions of the chimney of a land engine is as follows : — multiply the number of pound? of coal consumed under the boiler per hour by 12,...the smallest part. A factory chimney suitable for a 20-horse boiler is commonly made about 20 in. square inside, and 80 ft. high. and these dimensions... | |
 | 1849 - 608 Seiten
...ascertaining the required degree of contraction :— Let 17 times the length of the grate in. incheibr divided by the square root of the height of the chimney in feet, and the the quotient is the area for tin aperture at the top of the chimney in inches. I had a grate... | |
 | 1851 - 804 Seiten
...section of the chimney of a land engine ; as given by Bourne in his treatise upon the steam engine : " Multiply the number of pounds of coal consumed under...square root of the height of the chimney in feet; and the quotient is the area of the chimney in square inches in the smallest part. A factory chimney... | |
 | WILLIAM BLACKWOOD & SONS, EDINBURGH - 1851 - 716 Seiten
...supplied with a foul air extracting valve. Let 17 tima the length of the grate in inches be divided by the square root of the height of the chimney in feet, and the quotient ii the areajor the aperture at the top of the chimney in inches. I had a grate of... | |
 | Henry Stephens - 1852 - 828 Seiten
...contraction at the top is the following : — Let 1 7 times the length of the grate in inches be divided by the square root of the height of the chimney in feet, and the quotient is the area for the aperture at the top of the chimney in inches. For example, suppose... | |
 | Henry Stephens - 1853 - 854 Seiten
...this being kept in view, Tredgold's rule Let 17 times the length of the grate in inches be divided by the square root of the height of the chimney in feet, and the quotient is the area for the aperture at the top of the chimney in inches. For example, suppose... | |
 | Henry Stephens - 1861 - 726 Seiten
...contraction at the top is the following: Let 17 times the length of the grate in inches be divided by the square root of the height of the chimney in feet, and the quotient is the area for the aperture at the top of the chimney in inches. For example, suppose... | |
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Let 17 times the length of the grate in inches be divided by the square root of the height of the chimney in feet, and the quotient is the area for the aperture at the top of the chimney in inches. 
