Please help me find out how to answer this question, thank you.
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The thermal conductivity of gas is very small, which is not good for heat conduction, but it is good for heat preservation? .
The thermal conductivity of gas is very small, which is not good for heat conduction, but it is good for keeping warm and cold.
Agree with the 2nd floor’s opinion, I think so too
I'll give you the standard answer: Compared with liquids and solids, gases have the smallest thermal conductivity, which is detrimental to heat conduction, but is beneficial to heat preservation and insulation. Thermal insulation materials used in industry (such as glass wool, etc.) have a large amount of still air in their gaps, so their thermal conductivity is very small and they are suitable for thermal insulation. This is what Mr. Wang from the Chemical Equipment Research Institute of Zhengzhou University talked about in his lecture, and it also reminded me * For a moment.
This post was last edited by jia717 on 2010-7-5 20:47 Insulation and cold preservation are the same thing. What is the correct answer?