Double Vacuum Glass, also known as Vacuum Insulated Glazing (VIG), is an advanced type of window glass designed to provide exceptional energy efficiency and comfort. If you’re curious about what it is and how it works, this simple guide will walk you through the basics.
What is Double Vacuum Glass?
Double Vacuum Glass consists of two panes of glass separated by a very thin vacuum layer, typically less than 1 millimeter wide. Unlike traditional double glazing, which uses air or gas (like argon) between the panes, Double Vacuum Glass removes all air to create a vacuum. This vacuum acts as a powerful barrier to heat and sound, making it one of the most efficient glazing options available today.
How Does It Work?
The secret to Double Vacuum Glass lies in its vacuum layer. Heat moves in three ways: conduction, convection, and radiation. In regular double glazing, air or gas between the panes allows some heat to transfer through convection and conduction. A vacuum, however, eliminates these two forms of heat transfer because there’s no air or gas to carry the heat. Tiny spacers, called micro-pillars, are placed between the panes to keep them from collapsing under atmospheric pressure, while low-emissivity (Low-E) coatings on the glass reduce heat loss from radiation.
Benefits of Double Vacuum Glass
- Superior Insulation: The vacuum layer makes it two to four times more efficient than standard double glazing, keeping your home warmer in winter and cooler in summer.
- Noise Reduction: Sound struggles to travel through a vacuum, so Double Vacuum Glass is excellent for blocking outside noise—perfect for homes near busy roads or airports.
- Slim Design: Despite its high performance, it’s much thinner (around 6-10 mm) than traditional double or triple glazing, making it ideal for retrofitting older windows without bulky frames.
- Energy Savings: Better insulation means less need for heating or cooling, which can lower your energy bills and reduce your carbon footprint.
- Long Lifespan: With durable seals, Double Vacuum Glass can last over 25 years, outlasting many traditional glazing options.
Where Is It Used?
Double Vacuum Glass is especially popular in:
- Heritage Buildings: Its slim profile mimics single glazing, making it a great choice for restoring old windows while improving efficiency.
- Modern Homes: It’s perfect for energy-efficient designs like Passive House projects.
- Noisy Areas: The soundproofing makes it ideal for urban environments.
Things to Consider
- Cost: Double Vacuum Glass is more expensive than standard double glazing due to its advanced technology, but the energy savings can make it worthwhile over time.
- Limitations: It can’t be cut or shaped after manufacturing, so it’s custom-made for each window.
Final Thoughts
Double Vacuum Glass is a cutting-edge solution for anyone looking to improve their home’s energy efficiency, comfort, and quietness. While it comes with a higher upfront cost, its long-term benefits make it a smart investment for both modern and historic properties. If you’re upgrading your windows, it’s worth considering this next-generation glazing option! If you are looking for a trusted Double Vacuum Glass supplier in China, please contact us now.
Read More:
Top 10 BIPV Glass Manufacturers in the World
