From the energy saving effect, the best is: (A) ordinary aluminum alloy window B steel window C insulation broken bridge aluminum alloy window D wood windows
I found one: the eighth earth small doctoral science and technology competition junior high school group questions and answers
This should say that the election C
Wood windows, natural insulation performance, the provincial heating costs, air conditioning fees, metal doors and windows are not intended to be natural conductor, not up to K value requirements, the European energy-saving windows and doors are very common, wooden windows accounted for 30%
The so-called energy-saving province is in the ordinary window of the material effort, making the windows in the thermal insulation function greatly improved, so as to achieve energy-saving effect, energy-saving windows are modern and future development of environmental protection and energy saving products cornerstone.
The materials used for the windows are wooden windows → aluminum windows → plastic windows.
