Thermal Conductivity & Heat Transfer Coeff: Relationships

[xharville]

Does thermal conductivity have any connection with heat transfer coefficient? If so what is one in terms of the other.

 

[lalbatros]

(heat transfer coefficient) = (thermal conductivity) / (thickness of the material considered)

(heat flux) = (heat transfer coefficient) * (temperature difference) * (surface exposed to temperature gradient)

 

[astrokreng]

Yes, there is a connection between thermal conductivity and heat transfer coefficient. Thermal conductivity is a measure of a material's ability to conduct heat, while heat transfer coefficient is a measure of how easily heat is transferred between two surfaces. In other words, thermal conductivity is a material property, while heat transfer coefficient is a system property.

The relationship between these two can be described by the following equation:

Heat transfer coefficient = (Thermal conductivity * Surface area) / Distance

This equation shows that heat transfer coefficient is directly proportional to thermal conductivity, meaning that as the thermal conductivity of a material increases, the heat transfer coefficient also increases. This makes intuitive sense, as a material with high thermal conductivity will be able to transfer heat more easily and therefore have a higher heat transfer coefficient.

In summary, thermal conductivity and heat transfer coefficient are related, with thermal conductivity being one factor that affects the heat transfer coefficient in a system. However, it is important to note that other factors, such as surface area and distance, also play a role in determining the heat transfer coefficient.