Help please!

I have a lot of windows to restore. I am restoring them, rather than ripping them out and replacing them, as everyone seems to think I should, but I have a couple of questions.

Firstly - what is the style of window called? - typical central European, not double glazing or secondary glazing as each unit is an inner and an outer window with a gap of 30 cm between them. the bottom part opens inwards, hinges on the left & right sides, with a separate top section which only opens a slight amount. I think they might be called 'vienna' style but can't find enough info to be sure.

Secondly - I am stripping and painting the frames - but are different names for the wooden parts which are set into the wall and the wooden parts which encase the glass?

Thirdly - I am working on a heat loss calculation - I believe that air is a good thing to have trapped to stop heat escaping? How does this type of window compare with the modern new fangled double glazing we see everywhere these days?

Thanks in advance!

Thanks Tony,

Have you come across any data about the heat loss calculation at all? I would be interested to see the numbers.