Simple definition
Consider a solid material placed between two environments of different temperatures. Let $${\displaystyle T_{1}}$$ be the temperature at $${\displaystyle x=0}$$ 查看更多內容

There are several ways to measure thermal conductivity; each is suitable for a limited range of materials. Broadly speaking, there … 查看更多內容

Temperature
The effect of temperature on thermal conductivity is different for metals and nonmetals. In metals, heat conductivity is primarily due to … 查看更多內容

Because thermal conductivity depends continuously on quantities like temperature and material composition, it cannot be fully characterized by a finite number of experimental … 查看更多內容

In the International System of Units (SI), thermal conductivity is measured in watts per metre-kelvin (W/(m⋅K)). Some papers report in watts per centimetre-kelvin (W/(cm⋅K)).
In imperial units, thermal conductivity is measured in 查看更多內容

The thermal conductivities of common substances span at least four orders of magnitude. Gases generally have low thermal … 查看更多內容

The molecular mechanisms of thermal conduction vary among different materials, and in general depend on details of the microscopic structure and molecular interactions. As such, thermal conductivity is difficult to predict from first-principles. Any expressions … 查看更多內容