However, this is not a vacuum in the conventional sense. The vacuum inside the glass also serves as a good service, minimizes the convection that reduces heat transfer. 4. The thicker profile than the more cameras there – the better. Senselessly increase the thickness and complexity of the profile, and so its thermal resistance, on average twice as much as a glass.
So that if they chilled the window – it is in any case, chilled glass, and freezing begins from the bottom! And there are frosts, was frozen to the profile, we simply do not exist. Do not let bother with all kinds of 'design features' and 'technological innovations'. Three-, four-or five-chamber profile – all this had virtually no affect the properties of your windows during the operation. A profile can be easily done even desyatikamernym and put in a box at least ten units of rubber seals – the fact that it's just not necessary. It is no accident, no serious manufacturer does not allow himself to get involved in such cheap publicity stunts. The standard scheme – three-chamber profile, the two loop seals and double-glass (but it's really useful) – is the best option.
All the profiles of the main European producers to do so. And do not believe is not very valid statements of managers of some firms 3, 4, 5, no worse and no better than each other. 5. Thick glass – the best. It is not exactly. In fact, double pane windows, as opposed to 'wood' Soviet windows, sells quite nontrivial idea of limiting the convective heat transfer. This requires some explanation. There are several types of heat transfer – by radiation, by convection and by conduction of the medium. The simplest example of radiation heat transfer – the sun. An example of the heat – do not grab the metal handle of the frying pan – it is hot, although the flame warming does not handle very well pan.