dig economy workshop slides
DESCRIPTION
TRANSCRIPT
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Greenview: Seeing energy
differently
Institute of Energy & Sustainable Development / Institute of Creative Technologies
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An interactive workshop on visualising energy.
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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
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The
invi
sibi
lity
of e
nerg
y
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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
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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
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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.
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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.
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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
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Virtual Pets
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The Campus as Ecosystem
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Healthy buildings = happy animals
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QUANTIFYING ENERGY
PERFORMANCE
Dr Graeme Stuart & Dave EverittIESD/IOCT
De Montfort University
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QUANTIFYING ENERGY PERFORMANCE
• What is a happy/neutral/sad building?• What is normal consumption?• Can we calculate energy performance?
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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
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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?
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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
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WHAT IS NORMAL?
• Consumption (and normality) is dependent on ‘time of week’
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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
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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
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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
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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]
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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
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Thank you for listening.Dr Richard [email protected]
Professor Martin [email protected]
Dr Graeme [email protected]
Dave [email protected]
greenview.dmu.ac.uk Twitter: richbull or greenviewdmu