How Do You Calculate Heat Loss from a Box and Heated Gas?

[nuby]

Hello,

How can I determine the heat loss (to air) from a box of a specific material, with a heat source inside of it?

Also, how do you calculate the heat/energy loss of a heated gas into ambient air.

Thanks

 

[Redbelly98]

This is usually not treated in physics classes, rather in mechanical or chemical engineering classes that deal with heat transfer by convection.

Is this a specific homework problem, or just for general knowledge? At any rate, you're probably better off asking in the engineering section.

Of course, the steady state heat loss rate would equal the heat generation rate, but that's probably not very helpful.

 

[thomate1]

for your question. To determine the heat loss from the surface of a box, you will need to consider several factors such as the thermal conductivity of the material, the temperature difference between the inside and outside of the box, and the surface area of the box. The formula for calculating heat loss is Q = kA(T1-T2)/d, where Q is the heat loss, k is the thermal conductivity, A is the surface area, T1 is the inside temperature, T2 is the outside temperature, and d is the thickness of the box. You can also use this formula for calculating the heat loss from a heated gas into ambient air by substituting the thermal conductivity of the gas for k and the volume of the gas for A. It's important to note that this formula is a simplified version and may not account for all factors, so it's best to consult a more comprehensive heat transfer equation for more accurate results. I hope this helps.