Tas building simulation software compared with
monitored data contained in the following IEA report.
INTERNATIONAL ENERGY AGENCY (IEA)
Energy Conservation in Buildings & Community
Systems Annex 21 Subtask C
Empirical Validation of Thermal Building Simulation
Programs Using Test Room Data An important part of the programme of work undertaken
by the IEA research team was the identification of good quality
monitored data on building thermal performance. Careful scrutiny of data
sets from around the world culminated in the choice of measured data
produced by the Energy Monitoring Company (EMC) at their Cranfield
University test site.
The EMC data is of high quality, meeting the many
stringent criteria specified by the IEA team. The test rooms were
carefully constructed and the monitoring equipment and procedures were
of a high standard. Of fundamental importance was the fact that detailed
hourly weather data was also collected at the site.
COMPARISON OF MONITORED AND PREDICTED DATA
The monitored data chosen for the validation exercise
consisted of two periods. Firstly an October period, of 7 days duration,
when the rooms were heated (with an oil filled electric panel radiator)
to 30 deg C from 6.00 hr to 18.00 hr. Secondly a May period, also of 7
days duration, when the rooms were allowed to free-float. The primary
data for these two periods were available for the rooms with a panel of
double glazing in the south facade and alternatively with an opaque
insulated panel in the south facade.
The bold horizontal lines on the charts show the
estimated uncertainty in the experimental data.
Results for the heated rooms
Monitored and predicted total heating energy
consumption were compared for both types of room and their percentage
difference in energy use. |
