How to do building energy saving? ---Using rock wool is a scientific method
2021-02-05
Due to global warming, we are experiencing heat waves, floods, droughts, forest fires and rising sea levels. The global average temperature is rising at an unprecedented rate, and the risk of humans crossing an irreversible tipping point is also increasing.
Therefore, in December, President Xi delivered an important speech at the Climate Ambition Summit: “By 2030, China’s CO2 emissions per unit of GDP will drop by more than 65% compared to 2005, and non-fossil energy will account for about 25% of primary energy consumption. ". The promise of "carbon peak in 2030 and carbon neutral in 2060" not only injects new impetus into China's green development, but also an important measure to contribute to the global environment.
Enterprises, groups or individuals calculate the total amount of greenhouse gas emissions produced directly or indirectly within a certain period of time, and offset their own carbon dioxide emissions through afforestation, energy saving and emission reduction, etc., to achieve "zero emissions" of carbon dioxide
In the more than 40 years of reform and opening up, China's economy has achieved rapid growth, ranking second in the world, but it has also become a model of high energy consumption and high pollution in the eyes of the outside world.
In 2006, China became the world's largest carbon dioxide emitter. International Energy Agency data show that China's carbon dioxide emissions in 2017 were 9.26 billion tons, which is greater than the combined emissions of the United States and the European Union. About 90% of carbon emissions come from areas such as electricity and heat production, industry, and transportation.
From the perspective of the whole life cycle, the construction sector is a major carbon emitter, which is mainly divided into two categories, one is carbon emissions from building construction, and the other is building operation energy consumption, that is, consumption of electricity and heat after the house is built. Energy.
According to estimates, in 2017, China’s building construction-related carbon emissions were 1.86 billion tons, and building operation carbon emissions were 2.13 billion tons, totaling about 4 billion tons, accounting for 40% of the country’s carbon emissions.