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