ALUTECH roller shutters: heating and conditioning costs saving
25.01.2013 | Roller shutter systems
Today the issue of energy supplies shortage is becoming burning. One of the most effective methods for power inputs reduction is a supplementary protection for window openings, which are the main source of heat loss in winter and undesirable heating in summer. The universal solution is the installation of roller shutter systems ensuring energy saving the whole year round:
- On heating in winter. The fact of the matter is that the air space between the window and the shutter is performing a function of thermos and retains the heat.
- On conditioning in summer. The shutter blocks the solar radiation on the outside of the window preventing its heating and heat diffusion inside of the premises.
Roller shutters efficiency in winter
In order to confirm products’ thermal efficiency ALUTECH Group carried out the research in ift Rosenheim international institute (Germany). The ∆R-value of roller shutters was calculated according to main European standards methodology in this sphere.
According to the test results the use of roller shutters reduces the heat loss through windows by more than 30%, the additional thermal resistance ΔR is 0,22-0,23 m2·K/W. The ∆R-value takes into consideration the resistance of the curtain itself and the air space between the window and shutter.
Besides this, the test confirmed that Alutech roller shutters with special “silver” coating are characterized by a higher additional thermal resistance. It is explained by the presence of reflective particles in the coating, which contributes to the reduction of heat loss.
Roller shutters efficiency in summer
Another important benefit of roller shutters is their ability to reduce conditioning costs during the hot season.
Roller shutters effectively reduce the heat gain: in comparison to venetian blinds and dark blinds they block solar radiation before it achieves the window and prevent the heating of the room.
The research carried out by the French research center SNFPSA have shown that roller shutters reduce heat conductivity of the windows by 70%. The indoor temperature goes at least 5°С down regardless of glazing type and climate region.
Thus, the tests carried out by the leading international institutes confirm the high quality of ALUTECH roller shutter systems!
Besides the protective function they enable to save the money the whole year round. That is why the roller shutters became an important element of every building in countries where energy prices are rather high!
Test results (EN ISO 12567-1)
ΔR= 1/Uws –1/Uw (m²K/W)
Window with shutter Uws (W/m²К)
Window without shutter Uw (W/m²К)
Note: window type – double-glazed window 4/16/4 mm