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The cause of energy loss of hollow laminated glass

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Update time : 2023-02-08 16:00:00

Can hollow laminated glass insulate? So what's his insulating principle? Convection transfer is due to the temperature difference on both sides of the glass, causing air to fall on the cold side and rise on the hot side, resulting in air convection, and resulting in the loss of energy. There are several reasons for this phenomenon:

1. The poor seal between the glass and the surrounding frame system causes the gas inside and outside the window frame to exchange directly and generate convection, resulting in energy loss.

2. The unreasonable design of the internal space structure of the insulating glass leads to the convection of the gas inside the insulating laminated glass due to the effect of temperature difference, which drives the exchange of energy and thus produces the loss of energy.

3. The temperature difference between inside and outside of the Windows constituting the whole system is large, resulting in a large temperature difference between inside and outside of the insulating glass. With the help of cold radiation and heat conduction, air first generates convection on both sides of the insulating glass, and then transmits it through the hollow laminated glass as a whole, resulting in the loss of energy. Reasonable design of insulating glass can reduce the convection of gas and thus reduce the convection loss of energy.
Conduction transfer is to drive energy to move through the movement of molecules of the object, so as to achieve the purpose of transmission, just like cooking with an iron pot and welding things with an electric iron, and the conduction and transmission of energy to hollow laminated glass is completed through the glass and the air inside. The thermal conductivity of glass is 0.77W/(m·k). The thermal conductivity of air is 0.028W/(m·k), so it can be seen that the heat conductivity of glass is air.

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