A Method Making Possible the Utilization of an Illinois Joint Clay, Vol. 6
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| Partner: | buecher.de |
| Hersteller: | Forgotten Books (Bleininger, A. V.) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from A Method Making Possible the Utilization of an Illinois Joint Clay, Vol. 6: An Attempt to Determined the Amount of Heat Utilized From a Down-Draft Kiln by the Waste Heat Drying System In this manner the temperature of the air leaving the kiln was carefully measured for 108 hours. In attempting to calculate the amount of heat exhausted from the kiln by means of the fan we must know first the velocity of the air through the pipe. This it was only possible to approximate, since the draft gauge was not calibrated against an anemometer. The final value of the velocity accepted is lower than the actual velocity, since no attempt was made to use the Pitot tube correction factor, which is greater than unity. The theoretical velocity calculated from the head shown by the gauge, giving a lower value was hence used, neglecting the decrease in the viscosity of the hot air and other factors due to cooling between the kiln and the fan. This, it is believed, did not introduce any significant error, since evidently the velocity was fairly uniform throughout the test. The velocity is thus calculated from the formula. The velocity of the air was taken to be 9.5 m. per second. The time was divided into nine periods of 12 hours each and the mean exit temperature calculated for every period. With a pipe diameter of 30 inches and using the velocity above calculated we have a discharge of 4.18 cu. m. per second or of 180,570 cu. m. during 12 hours. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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