Flue Stack
 |
The flue stack on the heater is very important for several reasons. In addition to just getting the flue gasses up and out of the way where they won't endanger people, they also perform other functions. In the example shown, draft or flow of the flue gas is controled by an induced draft fan. In a natural draft furnace, the draft created in the stack is what "pulls' the flue gasses through the furnace convection. |
Disclaimer:
The formulas and correlations presented herein are all in the public domain and are to be used only as a learning tool. Note that any product, process, or technology in this document may be the subject of other intellectual property rights reserved by sponsors or contributors to this site. This publication is provided as is, without any warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of fitness for a particular purpose, or non-infringement.
The formulas, correlations, and methods presented herein should not be considered as being recommended by or used by the sponsors of this site. The purpose of this site is educational and the methods may or may not be suitable for actual design of equipment. Only a fired heater design engineer is qualified to decide if a calculation or procedure is correct for an application.