understanding ventilation practices how residents’ actions are prefigured in the design and...
TRANSCRIPT
Understanding Ventilation PracticesHow residents’ actions are prefigured in the design and
production of low energy housing
Carrie BeharPhD Researcher
UCL Energy Institute, Bartlett
BEHAVE CONFERENCE 04/09/14
Whole house ventilation in low energy housing
Fresh air only enters through controlled openings in living areas:• Trickle vents (1)• Wall inlets• Ductwork (2)
Stale air exits only through controlled openings in wet areas:• Extract vents (3)• Mechanical or passive• Heat recovery (4)
Airtight constructio
n
(1)
(3)
(2)
(4)
INTRODUCTION
BEHAVE CONFERENCE 04/09/14
DATA COLLECTION
BEHAVE CONFERENCE 04/09/14
Case A: PSV Case B: MEV Case C: MVHR Residents 4 residents 5 residents 6 residents
Design team 1 architect 1 architect 2 architects 1 contractor 1 contractor
Housing association
1 technical director 1 sustainability officer 1 housing officer 1 business manager 1 sustainability manager 1 project manager
Misc.1 course leader from BPEC domestic ventilation installer training course
Interviews with residents and professionals at three ‘low energy’ social housing developments
Homemaking Practices Homes modified by lifestyles, past experiences and homemaking practices
Critical EventsRaise awareness of otherwise ‘hidden’ systems
Ventilation Practices Complex ‘bundles’ of activities carried by residents enacting daily routines
Physical arrangements
THESIS
BEHAVE CONFERENCE 04/09/14
Design Practices Client’s requirements delivered through design and construction practices
(1)
(3)(2)
WINDOWS & FANS
BEHAVE CONFERENCE 04/09/14
WindowsLeft open while heating is on
Electric fansUsed to keep cool during summer
Wasted Energy as a result of certain ventilation activities
NIGHT VENTILATION
BEHAVE CONFERENCE 04/09/14
Insects & SpidersFear of bugs limits window opening
RooflightsHard to reach and let in rain
Night Ventilation not being carried out as anticipated
WINDOWS
BEHAVE CONFERENCE 04/09/14
PetsWindows left open to keep out smells
Wall InletsObstructed by furniture
Windows remain preferred ventilation choice despite more efficient options
Boost ButtonBroken switch confuses residents
Residents accustomed to closing windows at night to stop bugs entering
Critical Events• Pole provided to reach rooflights.
Several families adapt practices to use rooflight
• Window frame gets wet. 1 family makes decision to never open rooflights and use fans instead
Ventilation Practices • Windows opened during day
and closed at night• Electric fans and a/c used to
cool down
Dwelling overheats during hot weather
DISCUSSION
BEHAVE CONFERENCE 04/09/14
Architect anticipates night ventilation and designs rooflights for this purpose
Ventilation practices do not match those imagined by the designers
CONCLUSION
BEHAVE CONFERENCE 04/09/14
This research was made possible by EPSRC support for the London-Loughborough Centre for Doctoral Research in Energy Demand, grant number EP/H009612/1
Thank you for listening…Any questions?
Carrie Behar, PhD Researcher [[email protected]]
“Follow me on twitter @lolostudent”
PublicationsBEHAR, C. & CHIU, L., Ventilation in energy efficient UK homes; A user experience of innovative technologies. Proceedings of eceee summer study, Rethink, Renew, Restart., Belambra Les Criques, France 4-9 June, 2013.BEHAR, C. Utilising resident feedback to inform energy saving interventions at the Barbican. Local Environment: The International Journal of Justice and Sustainability 2013.