ca s e st u dy
1000
900
800
Heat Flux (W/m2)
700
PR70
No Film
600
500
400
300
200
100
8:40 am
6:40 am
4:40 am
2:40 am
12:40 am
10:40 pm
8:40 pm
6:40 pm
4:40 pm
2:40 pm
12:40 am
10:40 am
8:40 am
6:40 am
4:40 am
2:40 am
12:40 am
10:40 pm
8:40 pm
6:40 pm
4:40 pm
2:40 pm
Time
12:40 pm
0
Figure 1: Detailed data from 12:30pm, 26 June to 8:00am, 28 June. The highest heat load through the glazing is between 12:00 pm and 5:00 pm.
In conclusion, this trial confirmed that the
installation of 3M PR 70 solar control film
is a very effective solution for reducing the
internal heat loads at the 7-Eleven store in
Robina. Less heat coming through the glazing
means lower temperatures inside the store,
protecting perishable stock from direct
sun light and increasing customer and staff
comfort. An additional benefit of installing
PR 70 is the reduction of heat loads in the
afternoon when the peak electricity loads
are the highest, resulting in lower demand on
HVAC systems which could lead to energy
savings and lower electricity bills.
Since the time of this trial, 3M PR 70 has
been installed in several ܵ