1. Energy Emissions: Energy emissions account for 25% of all global greenhouse gas (GHG) emissions which includes CO2 that is emitted by burning fuel in buildings, it is also emitted when fossil fuels are burnt for generating electricity at power plants. GHG emissions are more explosive than CO2 emissions, even though percentage of GHG emission is low but its effect is more than that of CO2 emissions.
75% of GHG emissions is represented by CO2. Other GHGs include methane, fluorinated gases (from air conditioner leak out) and NOx compounds. The sources of energy emissions include electricity for running appliances (8% of global GHG emissions), electricity needed for cooling space (2% of global GHG emissions), electricity and fuel required for heating water (4% of global GHG emissions), electricity and fuel for heating space (8% global GHG emissions) and electricity required for lighting (3% of global emissions).
2. Embodied Emissions: It accounts for another 15% of global GHG emissions and is caused by materials used to make buildings. The major components include: the production of cement for buildings (5.5% of global GHG emissions), the production of steel and various other metals such as aluminum for buildings (3% and 1% of global GHG emissions respectively), it is also caused by the chemicals used for insulation, fireproofing, waterproofing and other building items (1% of global GHG emissions), and the remain building materials production (4.5% of global GHG emissions).
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Published By
Arka Roy
www.constructioncost.co
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