Three futuristic window technologies

Three futuristic window technologies

It is much harder to insulate a window than it is to insulate a wall. In the summertime, windows can also absorb and trap excess heat from the sun, leading to higher cooling loads. But people like to see outside (go figure!) so, as much as an HVAC designer might want...

Understanding heating loads in commercial buildings

We recently encountered some head-scratching results in an energy analysis of an existing office building in downtown Ottawa. This is an old building with out-of-date, metal-framed, leaky windows and we wanted to know what would happen if we replaced the old windows...