2
votes
How can I determine the U-value (or R-value) of my existing double glazing system?
My challenge was slightly different. I was purchasing new NorthStar windows to replace all of the old windows in my house but wanted to make sure I was getting what I paid for, as the windows would ...
- 21
2
votes
What is the most efficient disposition of windows to prevent thermal loss and improve lighting?
There are whole books on passive design.
Lawrence Livermore has a simulation program that can help with design.
Some quickies: for a south facing window, triple pane is net lower than double pane. ...
- 7,117
1
vote
What is the most efficient disposition of windows to prevent thermal loss and improve lighting?
This depends primarily on whether you're in a heating or cooling climate. In many places you want to heat the house in winter but cool it in summer, but people also live where they almost always want ...
- 3,792
1
vote
What's the optimal glass separation for secondary glazing?
1/4 to 3/8 inch. Smaller spaces than this means fewer collision between gas molecules so heat transfers faster. Larger spaces than this allow convection cells to form. For residential use, lean ...
- 7,117
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