Energy Saving and Solar Film

Technique_en, Curiosity

Energy Saving and Solar Films

2022 marks a dizzying surge in electricity costs, which is why using a solar control film on the windows of our home or office becomes a step to consider in order to use much less, or in some cases , almost not at all, the air conditioner.

Why do we save with solar control films?

An adhesive film for solar control with a Total Energy rejected of at least 50-60% allows us to delay the heating of the internal rooms by direct radiation of the sun for several hours; this will make it unnecessary to use air conditioners in the early hours of the day while, thanks to the screening of the film, it will be possible to use air conditioners at lower powers during the day; statistically it is calculated that a solar control film with a medium-high heat output reduces the costs of electricity for air conditioning by 30%. The first quarter of 2022 marks a dramatic doubling of energy tariffs compared to the same period of 2021, which is why a 30% cut on the cost of cooling is an absolutely interesting value in terms of actual monthly savings. Solarfilm is always available for advice on choosing the best film to save you month after month.

“But if I mount the solar films what happens in winter, then I'm cold?”

This is a question we often get asked. The answer is not entirely trivial, but let's try to explain in a simple way what happens. Let's analyze a sample city such as Milan and the relative average Kw / h per square meter per month that are irradiated horizontally. In the period October / March there is an average of 1.3 Kw / h of solar radiation per day, while in the period April / September it reaches 5.38 Kw / h; in short, the average heat of the coldest periods is more than 4 times lower than the heat of spring and summer. This means that the contribution of the sun to the natural heating of the house in winter is very low and limited to a few hours. We will not be able to do without "paid" heating and above all good insulation of the wall structures. In a nutshell, it is true that some fraction of a degree will be lost in winter by the failure of part of the solar energy to pass through the windows, but the annual balance will tell us that the saving on electricity in summer is much more consistent than that spending slightly more in the winter. To all this must be added the improvement of environmental well-being and the liveability of some spaces of the house that we probably cannot fully enjoy in hot weather.