1.2.23 Installation of an efficient destratification fan system
Description
Thermal stratification is caused by hot air rising up to the ceiling or roof space because it is lighter than the surrounding cooler air. The same applies to cool air falling to the floor as it is heavier than the surrounding warmer air. This means that HVAC systems have to constantly cycle on in order to maintain the overall building interior at a settled temperature. HVAC systems are typically over delivering either heating or cooling to compensate for this stratification phenomenon. To avoid this issue the air can be moved by an efficient destratification fan.
Benefits
Extremely simple to retrofit and/or install
The amount of HVAC equipment required for a building or space is reduced
Complement the HVAC system in any building as efficient air movement is the key to make sure an HVAC system operates at its maximum potential without wasting energy
Limitations
Spaces which are not tall enough to become highly stratified
Economic assessment
Affordable purchase and install price. Payback: Three months. Energy savings on heating and cooling costs by up to 50%.
References and best practices
Technology evaluation of thermal destratifiers and other ventilation technologies: www.aiha.org/aihce06/handouts/d1hughes.pdf
Case Study: Lush Retail Ltd – Hatch Pond Road, Poole: www.airius.co.uk/sites/default/files/Lush%20Retail%20Ltd%20-%20Hatchpond%20Road%20Case%20Study%202.pdf
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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
