Glass has more than three times larger thermal conductivity than air. Yet glass-wool (glass fibers and air) air spaces. Why is glass-wool better although glass has larger conductivity than air?

Name: Glass has more than three times larger thermal conductivity than air. Yet glass-wool (glass fibers and air) air spaces. Why is glass-wool better although glass has larger conductivity than air?
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Question

Quizplus · Accepted Answer

The Answer is Convection is very important, and the glass fibers reduce the convecting air currents.

Glass Has More Than Three Times Larger Thermal Conductivity Than