Relativity Investigation of Environmental Protection and Energy Efficiency in Buildings

The energy sources crisis and environment damage are one of the important task at present.Environmental protection is closely related to energy efficiency in buildings.Energy consumption in buildings accounts for 30%～40% of the total energy consumption.Energy effi-ciency in buildings is conducive to saving resources and energy,and then reduces the damage to environment.The heat loss of walls and win-dows of the building accounts for 85% of the total.Therefore,energy efficiency in buildings should firstly start from building envelope.