1.2.20 Installation of dampers on flue gas ducts
Description
A flue damper is a cast iron plate with a spindle fitted inside the first piece of flue pipe that connects to the cast iron multifuel or woodburning stove. It works as a butterfly valve. The loss of energy due to room air spillage via the chimney to the outside can be avoided with flue dampers.
Benefits
It can save more than 4000 kWh per year depending on the combustion heating appliance and the outside conditions
Reduce losses when combustion heating appliance is switched off
Prevent heated room air from escaping via the chimney
Prevent loss of heat stored in the stove
Prevent flue-gas back-flow
Reduce fuel consumption
Limitations
High leakage
Blade flutter
Tendency of the blade to warp
Large clearance needs for the open blade
Economic assessment
The costs of the installation can be quickly recouped by the energy and fuel savings produced. The payback periods which are calculated according to the flue damper, location and chimney diameter are between 1.5-3 years.
References and best practices
Boiler draft and flue gas equipment: www.tssa.org/CorpLibrary/ArticleFile.asp?Instance=136&ID=C7B50BA36090493F8336C67379E42DA8
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CHARACTERIZATION
Environment or playable world:
Residential
Academic
Offices
All
Carried out by:
Public building users
Owners
Operators
All
Reduce consumption of:
Heating
Cooling
DHW
Lighting
Electric devices
Type of driver:
Physical environmental
Contextual
Psychological
Physiological
Social
Time framework:
- Short term
- Long term
Type of measure:
- Envelope
- HVAC
- DHW
- Lighting
- Electrical devices
- Other
