Table of Contents
Which material has maximum value of thermal conductivity?
Diamond
Diamond is the leading thermally conductive material and has conductivity values measured 5x’s higher than copper, the most manufactured metal in the United States. Diamond atoms are composed of a simple carbon backbone that is an ideal molecular structure for effective heat transfer.
What is K value for insulation?
Firstly, K-value indicates the ability of a material to conduct heat. Materials with low thermal conductivities do not easily allow heat energy to pass through. Normally, you would look for a material with a low K-value to insulate, as this will keep the cool inside your building.
Does thermal conductivity change with thickness?
Thermal conductivity is not only affected by changes in thickness and orientation;temperature also has an effect on the overall magnitude. Because of the material temperature increase, the internal particle velocity increases and so does thermal conductivity.
Which plastic has lowest thermal conductivity?
Thermal Conductivity of Unfilled Plastics (W/mK) 1
| Plastic Type | Commercial Name | Thermal Conductivity (W/mK |
|---|---|---|
| Polyethylene L | Low density | 0.33 |
| Polyethylene HD | High density | 0.45 – 0.52 |
| Polyimide | Kapton | 0.10 – 0.35 |
| Polymethylmethacrylate | PMMA, Acrylic, Perspex, Plexiglass | 0.17 – 0.19 |
What is the thermal conductivity of Styrofoam?
0.033
Thermal Conductivity
| Material | Thermal conductivity (cal/sec)/(cm2 C/cm) | Thermal conductivity (W/m K)* |
|---|---|---|
| Polystyrene (styrofoam) | … | 0.033 |
| Polyurethane | … | 0.02 |
| Wood | 0.0001 | 0.12-0.04 |
| Air at 0° C | 0.000057 | 0.024 |