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natural draft |
Also found in: Wikipedia | 0.01 sec. |
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natural draft [′nach·rəl ′draft]
(fluid mechanics) Unforced gas flow through a chimney or vertical duct, directly related to chimney height and the temperature difference between the ascending gases and the atmosphere, and not dependent upon the use of fans or other mechanical devices. natural draft The flow of gases in a chimney due to the difference in temperature and density between the gases within the chimney and the outside air. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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