The Ventilation Hand book the Principles And Practice of Ventilation As Applied
The Ventilation Hand book the Principles And Practice of Ventilation As Applied
Charles Lincoln Hubbard
The book The Ventilation Hand book the Principles And Practice of Ventilation As Applied was written by author Charles Lincoln Hubbard Here you can read free online of The Ventilation Hand book the Principles And Practice of Ventilation As Applied book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Ventilation Hand book the Principles And Practice of Ventilation As Applied a good or bad book?
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The change of direction from horizontal to vertical should be made by means of an easy bend, as shown in 64 Warm Air Supply Fig. 20. To reduce frictional resistance as much as pos- sible. How are the sizes of the uptake flues determined for fan work in different types of buildings ? These, like the horizontal ducts, are based on the velocity of airflow and the volume of air to be de- livered. For schools, halls and churches, velocities of 600 to 700 feet per minute are commonly employed, while ...in the case of office buildings, institutions, etc. , where small flues are built into the walls, higher ve- locities of 1, 000 to 1, 200 feet per minute may be used, if the flues are smooth, in order to reduce their size. In cases of this kind it is necessary to run the fan at a higher rate of speed with increased power. Fig. 21 Method of Supporting Overhead Ducts How are overhead ducts of galvanized iron usually supported? Different methods of support are used, depending upon the size of the duct and the construction of the ceiling to which they are attached.
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