Relation ship between temperature and wats

[Pancho_Villa]

Hello there:

I need to calculate the expansion (area) of the tungsten when current and voltage is applied in it as conductor.

Manuel

 

[berkeman]

The expansion will depend on the thermal coefficient of expansion, and the temperature rise.

The temperature rise will depend on the power dissipated, and the thermal impedance between the conductor and the surrounding environment. You may need to characterize your physical setup to determine its thermal impedance (in degrees C per watt).

 

[oswaler]

Hello Manuel,

The relationship between temperature and watts is known as the Joule's law, which states that the amount of heat produced (measured in watts) by a conductor is directly proportional to the current and the square of the voltage applied. This law can be expressed as P = I^2R, where P is power (watts), I is current (amps), and R is resistance (ohms).

To calculate the expansion of tungsten when current and voltage are applied, you will need to consider the thermal expansion coefficient of tungsten and the change in temperature caused by the heat produced by the current and voltage. The thermal expansion coefficient is a measure of how much a material will expand or contract with a change in temperature. You can find this information in a material properties handbook or by conducting experiments.

Once you have the thermal expansion coefficient, you can use the formula: ΔL = αLΔT, where ΔL is the change in length, α is the thermal expansion coefficient, L is the original length, and ΔT is the change in temperature. This will give you the expansion in length of the tungsten conductor.

I hope this helps with your calculations. Let me know if you have any further questions.