CASE STUDIES
2. McKinnon Secondary College ››
1. Staughton College
The following thermal graph depicts the variances in internal ambient temperatures that were obtained when comparing two idential* school portable buildings at Staugton College in Melton, Melbourne.
Eco Express Thermo data loggers were installed in both school portable buildings at the same time to record the internal ambient temperatures associated with each building in the period between 11 Movember 2009 and 5 January 2010 and at regular intervals.
The unaltered data results were logged and produced the Eco Express Thermo 2007 graph below.
- Building 1 was not coated with Energy Star™ coatings from 24/11/09 to 13/12/09.
- Energy Star™ coatings were applied by the Astec Accredited Applicator - Cocoon Coatings Pty Ltd during the weekend of the 12-13 December 2009, as supplied from Astec Paints Melbourne Pty Ltd.
- From the 13/12/09 to 5/10/10, Building 1 had Energy Start™ coatings applied to its roof.
- Building 2 did not have Energy Star™ coatings applied for the whole of the period from 24/11/09 to 5/01/10.
Conclusion
- It can be concluded from the internal ambient temperatures recorded in the graph above, that Building 1 was at times between 24/11/09 and 12/12/09 some 5 C hotter than Building 2.
- After Energy Star™ coatings were applied to Building 1's roof, Building 1 recorded temperatures some 5 C cooler than Building 2 during the period 14/12/2009 to 5/01/10 and this benefit transpired immediately after the application of the Energy Star™ coatings to the roof of Building 1.
- The internal ambient temperatures of Building 1 never exceeded that of the uncoated roof of Building 2 during the period 13/12/09 to 5/01/20, importantly noting that the performance of the Energy Star™ coatings excelled when the ambient temperatures were hotter as noted in the above graph on the days of the 16th, 17th, 23rd, 30th and 31st of December 2010.
- Importantly, the above graph also infers an internal ambient temperature drop in Building 1 by some 10 C when compared to the roof of Building 1, not being coated with the Energy Star™ coatings.
*Indentical - these were similar school portable buildings and displayed similar structural characteristics. Each case will provide varying results pending their location and the above results are specific to this particular location. Astec Paints does not warrant results at different locations.
2. McKinnon Secordary College
“Many Victorian schools have portable buildings. In recent times, the Victorian Department of Education and Early Child Development (DEECD) have decided that all new portables will use reverse cycle air conditioning for heating and cooling.
We have three “new” portables. Two of them are side by side and are virtually identical. This provided an excellent opportunity to perform a controlled experiment. One portable roof was painted with “Stay Cool” and the other was left with the original galvanised finish. On the 1st November, 2007 I installed two electricity meters – one in each room. At the time of writing the two electricity meters are reading – “Stay cool” 2479 kilowatt hours, the non-treated control portable 5935 kilowatt hours. The energy saving is 48%. Let me emphasise again that the environmental situation for these portables is virtually identical. The teaching load is identical. The meters are measuring lighting and other power (mostly computer and audio visual) but these base load requirements should be similar. Considering this the saving on heating and cooling is even more remarkable.
I am very pleased with the result of my little experiment.”
Colin Barry, Facilities Manager
3. Knox Civic Centre
