Transcript
Greenview: Seeing energy
differently
Institute of Energy & Sustainable Development / Institute of Creative Technologies
An interactive workshop on visualising energy.
DE MONFORT UNIVERSITYWorld-class university situated in Leicester, with more than 18,000 students and 3,000 staff, five faculties offering around 400 courses and an annual turnover in the region: £132.5 million
INSTITUTE OF ENERGY AND SUSTAINABLE DEVELOPMENTLeading research institute conducting innovative and groundbreaking research into renewable energy, sustainable development and public engagement. Also run 3 MSc courses.
INSTITUTE OF CREATIVE TECHNOLOGY
The IOCT is a unique research Institute at the intersection of Science, Technology, Art and the Humanities
The
invi
sibi
lity
of e
nerg
y
By its nature, ‘energy’ is an abstract and invisible force that is conceptualised or commonly defined in a number of different ways, for example as a commodity, as a social necessity, as an ecological resource, or as a strategic material.*
* Burgess & Nye (2008), Re-materialising energy use through transparent monitoring systems, Energy Policy
The aim? To understand the role of ICT in reducing energy consumption of a large scale public building through the design of an ICT interface connecting building users to their electricity consumption.
DUALL
BEYOND INFORMATION PROVISION
• There is a need for a different approach- recognising the complexity of user perceptions and understandings (Niemeyer, Petts et al. 2005);
• Combining a bottom-up and top-down approach in order to minimise mixed messages (Owens 2000);
• The value of public engagement (Burgess and Clark 2009; Ockwell, Whitmarsh et al. 2009).
• The importance of context.
TRANSPARENCY
The principle idea is to reveal the level of energy variations in near real time in precise university building locations using augmented reality tools on common smartphones.
EMPEDIA AND AUGMENTED REALITY
The Empedia (www.empedia.info) platform has been developed under a KTP agreementbetween De Montfort and Cuttlefish Multimedia for iphone and Android platformsIt will be enhanced with an Augmented reality browser for Greenview applications
Virtual Pets
The Campus as Ecosystem
Healthy buildings = happy animals
QUANTIFYING ENERGY
PERFORMANCE
Dr Graeme Stuart & Dave EverittIESD/IOCT
De Montfort University
QUANTIFYING ENERGY PERFORMANCE
• What is a happy/neutral/sad building?• What is normal consumption?• Can we calculate energy performance?
WHAT IS A HAPPY BUILDING?
• When is a building happy?• When is a building sad?
• To build into the Greenview application – it needs to be directly calculable from ‘live’ energy consumption data– buildings must switch between being happy and sad over time
EACH BUILDING HAS ITS OWN DEFINITION OF NORMAL
• A building is happy when consumption is lower than normal
• A building is sad when consumption is higher than normal
• But what is normal?
WHAT IS NORMAL?
• A function of the latest 12 months of consumption• So normal changes over time• As new data are collected, older data are discarded
WHAT IS NORMAL?
• Consumption (and normality) is dependent on ‘time of week’
WHAT IS NORMAL?
• Consumption (and normality) is dependent on ‘time of week’• Most weeks are similar but all weeks are different
Calculate percentiles from each half hourly period
WHAT IS A PERCENTILE?
• For a given set of observations: [2,4,4,5,6,8,6,3,6,1,4,4,1,5,7,2,7,2,8,3,3,9,8,3]
• Arrange all the observations from lowest to highest value: [1,1,2,2,2,3,3,3,3,4,4,4,4,5,5,6,6,6,7,7,8,8,8,9]
• The middle one (or average of the middle two) is the median: [1,1,2,2,2,3,3,3,3,4,4,4|4,5,5,6,6,6,7,7,8,8,8,9]
• 50th percentile (or median) = (4+4)/2 = 4• 50% of observations are above, 50% are below
WHAT IS NORMAL?
• Consumption (and normality) is dependent on ‘time of week’• Most weeks are similar but all weeks are different• It is possible to create a normal weekly profile
WHAT IS NORMAL?
• A normal range can be defined as the ‘middle’ 50%• Between the 25th and 75th percentiles: [1,1,2,2,2,3|
3,3,3,4,4,4,4,5,5,6,6,6|7,7,8,8,8,9]
QUANTIFYING ENERGY PERFORMANCE
• A building is happy when consumption is in the green zone• A building is neutral when consumption is in the yellow zone• A building is sad when consumption is in the red zone
Thank you for listening.Dr Richard Bullrbull@dmu.ac.uk
Professor Martin Riesermrieser@dmu.ac.uk
Dr Graeme Stuartgstuart@dmu.ac.uk
Dave Everittdeveritt@innotts.co.uk
greenview.dmu.ac.uk Twitter: richbull or greenviewdmu
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