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|Title: ||Assessment of interventions to reduce dwelling overheating during heat waves considering annual energy use and cost|
|Authors: ||Porritt, Stephen|
Cropper, Paul C.
Goodier, Chris I.
|Keywords: ||Heat wave|
|Issue Date: ||2011|
|Publisher: ||CIBSE (Chartered Institute of Building Services Engineers)|
|Citation: ||PORRITT, S. ... et al., 2011. Assessment of interventions to reduce dwelling overheating during heat waves considering annual energy use and cost. IN: CIBSE Technical Symposium, De Montford University, Leicester, 6 - 7 September.|
|Abstract: ||Climate change projections indicate that the UK is expected to experience more
frequent and more intense heat wave periods over the coming decades. Buildings
frequently experience overheating even under the present climate, resulting in
discomfort, health complaints and even mortality. Current house building rates are
low, resulting in a need to adapt the existing building stock to provide more
comfortable and safe environments.
Dynamic thermal simulation computer modelling was used to assess and rank the
effectiveness of selected single and combined interventions (adaptations) in reducing
overheating during a heat wave period for a range of dwelling types, orientations and
occupancy profiles. It is shown that solar protection interventions, such as window
shutters and solar reflective coatings, can be amongst the most effective at reducing
overheating during heat wave periods, but with a corresponding increase in annual
space heating energy use. Whereas the addition of wall insulation, though beneficial
for reducing energy use, may in some cases actually increase summer overheating.
The results and guidance are presented in a way that allows identification of parts of
the building stock most at risk and rapid selection of the best performing interventions
in terms of overheating reduction, cost and annual energy use. It is also shown that
above certain cost levels there is a diminishing return in both overheating
performance and energy use reduction.
The results of this research will provide important information to support
refurbishment decisions of both individual house owners and landlords responsible
for multiple properties, such as housing associations and local authorities.|
|Description: ||This paper was presented at the CIBSE Technical Symposium, DeMontfort University, Leicester UK, 6th and 7th September 2011: http://www.cibse.org/ and is available from the CIBSE archive of technical papers.|
|Publisher Link: ||http://www.cibse.org/content/cibsesymposium2011/Paper077.pdf|
|Appears in Collections:||Conference Papers (Civil and Building Engineering)|
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