STACK APPARATUS TO CONTROL FURNACE GAS EXIT VELOCITY
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United States of America Patent
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Issued Date -
Feb 13, 2014
app pub date -
Aug 9, 2012
filing date -
Aug 9, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An exhaust stack for a combustion zone of a furnace includes a main stack having a first chamber therein in communication with the combustion zone, and a main damper disposed for movement within the first chamber to be positioned to provide a cross-section of the first chamber through which combustion products from the combustion zone may flow, and a secondary stack having a second chamber therein in communication with the first chamber and being disposed within the first chamber, the secondary stack having a second damper disposed for movement within the second chamber to be positioned to provide a cross-section of the second chamber through which the combustion products from the combustion zone may flow.
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