MEASURE: Continuous mechanical extract ventilation with demand control ventilation
Review of ventilation strategy to ensure sufficient ventilation is provided. This strategy uses fresh air intakes (wall or window vents) and the installation of a ducted, continuously running, mechanical extract ventilation system with local controls to adjust speed settings. Demand Control Ventilation (DCV) adds a method of control of the ventilation system by demand factors (e.g. humidity, occupancy, presence of VOCs) as required by the specific use of the space. Windows can be opened for rapid purge ventilation.
Monitoring & feedback recommended: Yes
ADVANTAGES
Continuous operation maintains specified air flow and fresh air exchange at all material times. Can be used in buildings with unquantified air permeability. Demand control allows air flow maintained at adequate levels when it is needed but possible to reduce air flow when not required. This results in energy saving without compromising the air quality
CONCERNS & ACTIONS
TECHNICAL (8)
HERITAGE (4)
ENERGY (4)RELATED MEASURES
FABRIC (25)
External Wall insulation
Internal Wall insulation
Frame infill insulation
Loft insulation
Rafter insulation
Flat roof insulation
Room in roof insulation
Loft hatch and ceiling airtightness
Floor insulation between/under floor joists
Floor Insulation on top of existing floor finish
Floor void filled with insulation
Exposed soffits to upper floors: Insulation in between joists or under soffit
Replacement of existing ground floor with new concrete insulated solid ground floor
Increased Floor airtightness
Window draughtproofing
Energy efficient glazing
Window refurbishment
Secondary glazing
Window Replacement
Door draughtproofing
High performance doors
Door refurbishment
Chimney blocking
Reduced air flow
SERVICES (9)
BEHAVIOUR (4)
