2. Wood has excellent thermal insulation performance, and its thermal conductivity is about 0.1~ 0.2w/(m k). The thermal insulation performance of wood is 400 times that of steel and 16 times that of concrete. 150㎜ thick wooden wall, its thermal insulation performance is equivalent to 6 10㎜ thick brick wall.
3. Compared with light structure buildings, wood structure buildings can save energy by 5.3%, while concrete structure buildings can save energy by 8. 1%. During the life cycle of the building, the wood structure building can save about 6% of the air conditioning operation cost compared with the ordinary concrete roof. Wood structure buildings can greatly reduce the consumption of fossil fuels and maintain comfortable temperature in an economical way.