Vacuum insulating glass contribute to net zero emission
Net zero emission is becoming the world consensus,and vacuum insulating glass,as the new type energy efficient glass,will help much in decreasing the energy consumption and save more energy,this post will analysis how vacuum insulating glass will contribute to the net zero emission.
What’s Net Zero emission?
Net zero means cutting greenhouse gas emissions to as close to zero as possible, with any remaining emissions re-absorbed from the atmosphere, by oceans and forests for instance.
Climate changing since the 1800s has affecting our daily life ,global temperature has increased by 1.1℃，which caused more melting ice, higher sea levels, more heat waves and other extreme weather, while also having a greater impact on food security, health, the environment and sustainable development.
Where the greenhouse gas comes from?
According to united nations statics,greenhouse gas comes from only a few countries, over 100 least -emitting countries contribute only 3% while the 10 largest countries contribute over 68%.Typical countries include America,China,European,India etc.
Timeline of Net zero plan
More than 70 countries, including the biggest polluters – China, the United States, and the European Union – have set a net-zero target, covering about 76% of global emissions. Over 1,200 companies have put in place science-based targets in line with net zero, and more than 1000 cities, over 1000 educational institutions, and over 400 financial institutions have joined the Race to Zero, pledging to take rigorous, immediate action to halve global emissions by 2030.
What caused greenhouse gas emission?
The main reason for global warming is that human beings have used a large number of fossil fuels (such as coal and oil) and emitted a large number of CO2 and other greenhouse gases in the past century.
Then what the fossil fuels energy used for? To generate electricity for our daily life and industrial production,to generate gasoline,and other materials that used in agriculture,Medical,industrial production.
The importance of windows in energy efficient windows
Building energy consumption accounts for more than 40% of the total energy consumption,which include building, industrial and transportation energy consumption.
While the energy consumption lost through doors and windows accounts for more than 50% of the building energy consumption, accounting for about 20% of the total social energy consumption.
China has up to 43 billion square meter architectural area,and annual increasing 2 billion square meters,with annual 500 million sqm windows& door.
If changing existing windows to energy saving windows that can save 40% energy consumption,then just China can save 430 million metric tons coal.
The key point of vacuum insulating glass is to help decreasing the windows& door thermal conductivity.
The windows performance with Vacuum insulating glass
Compared with normal windows,thermal break aluminium windows has increased windows conductivity performance significantly,see below chart.
Many system windows adopted triple glass units and get Germany PHI passive house certificate.Windows U value is below 0.8W/M2.K,but the costs is much thick windows frame and triple glass units (up to 47mm),overall costs is also over USD400/SQM,the price is 2 times higher,which brings difficulty to customers who want comfortable life.
Typically best U value of triple insulated glass is 0.6W/M2.K,which has reached the ultimate extremely low value,if adding more lites,will cause thicker glass and thicker profiles.
How Vacuum insulating glass contribute to Net Zero emission?
Vacuum insulating glass ,is revolutionary architectural glass products.
Different from insulated glass,the vacuum glass panels are sealed and separated by 0.3mm vacuum space at 10^(-4)Pa.
Taking advantage of micro pillars and advanced low temperature metal sealing technology,vacuum insulating glass will finally replace traditional insulated glass and bring more comfort to your life.
The biggest feature of vacuum insulating glass is its excellent thermal thermal conductivity
|Typical Glass Combination||6mm||6+1.52+6||6-12A-6||6 LE -12A-6||6LE-12A-6LE-12A-6||5+0.3V +5|
|Glass Type||Tempered||Laminated||Double glass unit||Double glass unit||Triple glass unit||Vacuum glass|
|Glass weight||15 kgs/sqm||30 kgs/sqm||30 kgs/sqm||30 kgs/sqm||45 kgs/sqm||25 kgs/sqm|
|Glass U value||5.8 w/m2.k||5.2 w/m2.k||2.7 w/m2.k||1.6 w/m2.k||0.6 w/m2.k||0.47 w/m2.k|
Compared with triple glass units, vacuum glass thickness is 75% less and has better U value.
HaanGlas vacuum glass tested stable status U value is 0.47W/M2.K,which is superior than other glass products.
Replacing the triple glass units used in windows to vacuum glass has below benefits:
- Decreasing windows U value further more.
- Help decrease the frame thickness and width.
- Decrease the hardware requirement.
- Decrease the windows overall costs.
Test also shows that with normal 65 series glass fiber reinforced PU windows (vacuum sealed windows),U value is just 0.89W/M.K,which is equivalent to 110 series thermal break system windows with triple glass units,while the overall costs is 20% lower.
HaanGlas is your turnkey tempered vacuum glass manufacturer and supplier,contact us for your next great building.