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Damper curves
We use the damper to maintain draft at a set location in the unit and setting varies dependent on fuel firing rate etc which produces a given quantity of flue gas at a corresponding temperature. Usually multiple wafer opposed blade dampers but on smaller units we do sometimes have a single...- zmis
- Post #3
- Forum: Chemical plant design & operations
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Damper curves
Among other things we build stacks with installed control dampers to maintain static draft. Customer wants a damper curve (pressure drop vs % open). I feel like there's an appropriate place to start but that I can't find it. We don't do any in place testing so measuring pressure drop at...- zmis
- Thread
- Replies: 4
- Forum: Chemical plant design & operations
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Stack wall temperature
I'm trying to verify the temperature of a stack's steel (A36) structure. 8.33' OD, 2" of concrete insulation on the inside for an 8.0' ID. I know the bulk fg temperature (529F), the ambient temperature (105F), thermal conductivity of the insulation (1.54 Btu*in/ft2*hr*F or 0.1283 Btu/ft*hr*F)...- zmis
- Thread
- Replies: 6
- Forum: Heat Transfer & Thermodynamics engineering
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Bridgewall Temperature
If this is a direct fired process furnace you might be able to assume a constant gas temperature (calculate heat release and flue gas mass) and then add conduction (fourier), convection (sieder-tate) and radiation (good luck). The simplest method would be to get your hands on empirical...- zmis
- Post #2
- Forum: Heat Transfer & Thermodynamics engineering
