Heat transfer characteristics of high purity six sulfur fluoride
In high temperature arc, high purity six sulfur fluoride will break down and ionize, with energy consumption, it has a great influence on the heat conduction process. Therefore, the thermal conductivity at this time can be considered to be composed of two parts, namely, the standard thermal conductivity and the components related to the decomposition and ionization reactions.
However, for gas medium, the heat transfer capacity of high purity six sulfur fluoride is not only a pure conduction, but to a large extent, it depends on convection heat transfer. The convection heat transfer is due to the existence of the local pressure difference, which causes the gas medium to produce the macroscopic motion to spread the heat. The convective heat transfer capacity of the gas medium is related to the specific heat capacity and viscosity of the gas.
Secondly, the diameter of the six sulfur fluoride is larger than that of the oxygen and nitrogen molecules in the air, so that the free travel of free electrons in the six fluorinated sulfur gas is greatly shortened, thus it is not easy to accumulate energy in the electric field, thus reducing the free electron collision and dissociation capacity.
In the six sulfur fluoride, it is due to the net impact free coefficient of electricity is very small, the negative mobility with low mobility is also very easy to form neutral molecules with positive ions, so the insulation strength of six sulfur fluoride gas is very high.
Application of AC voltage in the frequency range from frequency to frequency of communication within the insulation strength of six sulfur hexafluoride gas basically unchanged. Therefore, six sulfur fluoride gas is also widely used in many off frequency electrical and electronic devices, such as axis cable, waveguide tube, radar device and so on.
The content of the article comes from high purity six sulfur fluoride: www.feiliergas.com/