annedi said:Hr= (Area)(e)(5.67x10^-8 W/m^2K^4)(temperature)^4
annedi said:The answer must be in joules per second
annedi said:is this correct. i computed the Hr as a function of area
132.89 W Area /m^2
70543 W Area/m^2
annedi said:I'm sorry, I forgot to convert the temperature
what i meant by W (area)/ m^2
whatever the area is, you'll plug it in the equation.. so W (x)m^2/m^2 will cancel out thus leaving W as the unit
annedi said:the heat flux from copper to water is 2548.23 W/m^2 at 250C.. is this what you mean..
annedi said:there is no more information stated here.. thanks for the help stockzahn. I really appreciated it. this was due today
Heat transfer by radiation is the process of transferring heat energy through electromagnetic waves. It does not require a medium, and can occur even in a vacuum.
Heat transfer by radiation differs from conduction and convection in that it does not require a medium to transfer heat. Conduction and convection require a substance or material to transfer heat through direct contact or movement of particles, respectively.
Some examples of heat transfer by radiation in everyday life include feeling the warmth of the sun on your skin, cooking food in a microwave, and feeling the heat from a fire or campfire.
The color of a surface can affect heat transfer by radiation. Darker colors absorb more radiation and therefore, tend to get hotter, while lighter colors reflect more radiation and stay cooler.
The rate of heat transfer by radiation is affected by several factors, including the temperature difference between objects, the surface area of the objects, and the type of material and its emissivity (ability to emit radiation).