How does insulating glass use vacuum or gas to reduce heat transfer?

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In summary: However, according to thermodynamics, a vacuum does not have a temperature. While it is possible to have a space with only black body radiation that is interpreted as a vacuum with a certain temperature, it would not be practical to maintain a vacuum in windows or homes for insulation purposes due to the atmospheric pressure. Some window double glazing methods already use a vacuum or gas-filled space to reduce heat transfer, as air is a poor conductor of heat.
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zuz
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What is the temperature of a vacuum? Could this be used as an insulator in windows/homes?
 
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Thermodynamically, temperature for a vacuum does not exist (there is nothing that can have a temperature).
In windows/homes it isn't practical to maintain a vacuum just for its insulating properties: withstanding the forces from the atmospherical presssure would require a massive construction.
Real vacuum flasks aren't really vacuum, they just lower the pressure between the bottles
 
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Depending on context, a space with only black body radiation is often interpreted as a vacuum with a certain temperature T.
 
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zuz said:
Could this be used as an insulator in windows/homes?
 
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zuz said:
Could this be used as an insulator in windows/homes?

It already is. Some window double glazing (2 sheets of glass vacuum or air between) methods already do this
Air is a poor conductor of heat

from wiki
Insulating glass (IG), more commonly known as double glazing (or double-pane, and increasingly triple glazing[1]/pane), consists of two or three glass window panes separated by a vacuum or gas filled space to reduce heat transfer across a part of the building envelope.

Insulating glass units (IGUs) are manufactured with glass in range of thickness from 3 to 10 mm (1/8" to 3/8") or more in special applications. Laminated or tempered glass may also be used as part of the construction. Most units are produced with the same thickness of glass used on both panes[citation needed] but special applications such as acoustic attenuation or security may require wide ranges of thicknesses to be incorporated in the same unit.
Dave
 

1. What is the temperature of a vacuum?

The temperature of a vacuum is technically considered to be absolute zero, which is equal to 0 Kelvin or -273.15 degrees Celsius. This is because a vacuum is an environment with no particles or molecules to transfer heat and create a temperature.

2. Can a vacuum have a temperature?

Technically, no. As mentioned before, a vacuum is an environment with no particles or molecules to transfer heat and create a temperature. However, the term "temperature of a vacuum" is often used colloquially to refer to the temperature of an object or system inside a vacuum chamber.

3. Does the temperature of a vacuum affect its pressure?

No, the temperature of a vacuum does not affect its pressure. Pressure is a measure of force per unit area, and in a vacuum, there are no particles or molecules to exert a force and create pressure. Therefore, the pressure of a vacuum is solely dependent on the amount of matter or gas that has been removed from the environment.

4. How is the temperature of a vacuum measured?

The temperature of a vacuum is typically measured using a thermometer or a thermocouple placed inside a vacuum chamber. However, these measurements can be affected by the heat generated by the measuring device itself, so special precautions must be taken to ensure accurate readings.

5. Is it possible to create a vacuum with a temperature above absolute zero?

No, it is not possible to create a vacuum with a temperature above absolute zero. This is because a vacuum is an environment with no particles or molecules to transfer heat and create a temperature. Any heat or energy present would quickly dissipate in the absence of matter or particles to transfer it to.

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