# Converting Wattage to Temperature [closed]

Let us say you have an 8 watt source or heater, what is the highest temperature it can attain or be converted to?

I was asking in the context of transformer losses. At no-load, there is core loss.. if the temperature of the core is 50 Celsius. what minimum wattage of the iron core loss can produce that?

• The problem is very-ill defined. We need (much) more information on your situation (what are you trying to heat, in what conditions, what is the environment, etc.........) Nov 2, 2018 at 1:57
• It's the context of transformer no-load core loss.. as your know.. transformers heat up even with zero load at the secondary. So what is the loss of wattage.. or what minimum wattage can cause 50 Celsius surface temperature? Nov 2, 2018 at 2:12
• Still far from being enough. If the losses happen in the core of the device, and you want us to compute an equilibrium temperature of the surface, we need at least to know the thickness of the material to be heated, its specific heat, the external conditions (outside ? what temperature ?), and probably the shape of your device if the convective transfer is to be accounted for. . Furthermore, I am not familiar at allwith the "no-load core loss" of a transformer, and maybe you'd have better luck in an electrical engineering stack exchange ? Nov 2, 2018 at 2:19
• I'm not asking for the specific surface temperature or heat. I just want to know the physics principle of how to convert wattage to heat or temperature. If you have say a light bulb of 8 watts.. how much heat or temperature can it attain? Nov 2, 2018 at 2:21
• I just want to make clear that your question has no answer. If your 8 watt light bulb is used to light up a dark alley in eastern russia during a warm winter evening at -40C, it definitely wont reach the same equilibrium as if it was in the bahamas. Again, your problem is not well defined, and a Power is completely unsufficient to answer. Furthermore, you are confusing the basic notions of heat and temperature, which will make the discussion delicate. Heat is an energy transfer. Temperature is not Nov 2, 2018 at 2:24