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Professor Colin Pattinson
Head of School
Computing, Creative Technologies and Engineering
The JISC Heat & Light by Timetable project
From Heat & Light to BEST
The problem
• Mixed estate– Age– Size– Location– Use– Heating control
• Rooms heated 8 – 20:00, Mon – Fri• Irrespective of actual use
Teaching space use
• Timetabled according to operational requirements
• Rooms are– Pooled – available to any user– Specialist – e.g. laboratories– Meeting rooms
Example room use – poolBooking period: 09.00 –
10.0010.00 – 11.00
11.00 – 12.00
12.00 – 13.00
13.00 – 14.00
14.00 – 15.00
15.00 – 16.00
16.00 – 17.00
Pool rooms:
Midday
Am
Pm
Distributed
Example room use – specialist roomsBooking period: 09.00 – 10.00 10.00 – 11.00 11.00 – 12.00 12.00 – 13.00 13.00 – 14.00 14.00 – 15.00 15.00 – 16.00 16.00 – 17.00
Midday
am
pm
Distributed
Example room use – meeting roomsBooking period: 09.00 – 10.00 10.00 – 11.00 11.00 – 12.00 12.00 – 13.00 13.00 – 14.00 14.00 – 15.00 15.00 – 16.00 16.00 – 17.00
Meeting rooms:
Midday
am
pm
Distributed
The timetable
Centralised system (CMIS)DayTimeFinishLength
Event IdSize*Grp*
Class (course)Grp
ModuleLecturer
SiteRoom
Booking id*Weeks
Year (of course)
DetailsDepartment
Mod (module code)Course
CapacityCategory*
Type*Class*Zone*
Classif (tut, prac, etc)Created
UserInstanceChangedCampus
Num weeks (of use)
* indicates currently unused fields
Building Management System
The idea
• Use the CMIS data to determine when rooms are in use;
• Use this information to generate heating control
• All we need is a link between CMIS and BMS
Time lags
• Takes time to heat a space,• Residual heat remains afterwards
Interface software
• Retrieve data from CMIS– Room number– Day– Start & stop time
• Convert to BMS control sequences– Time zone start and stop
Building “blocks”
• BMS operates HVAC controls based on zones• CMIS works on a per-room basis• Need to allocate rooms into BMS blocks
– If one room in a block in use – the whole zone needs heating
Next steps
• Fuller operation of the system• Two more research projects
– A PhD project extending the idea– A modelling project to calculate estimated savings– Building Energy Scheduling by Timetable
BEST – Building Energy Scheduling by Timetable
• Thermal modelling– Includes heat flows
• Allows estimated energy saving– For retrofitting
BEST outputs• Potential 10% energy saving • See our upcoming paper
– PREDICTING AND OPTIMIZING THE PERFORMANCE OF A TIMETABLE LINKED BUILDING ENERGY MANAGEMENT SYSTEM
• To be presented at Building Simulation and Optimization 2014 23/24 June, UCL
The model:
Thank you