Home > Astrophysics > Blackbody Radiation

How do you calculate radiation heat transfer?

Answer 1

By Stefan–Boltzmann set of formulae.

The power (energy) radiated from the optimally absorptive black body is described by the Stefan-Boltzmann law.

heat transfer between two bodies caused by the emission of electromagnetic radiation and its subsequent absorption (via waves).

#Q = σ *T^4*A#

#Q= σA (T^4 1 -T^4 2)#

................................................................................................

Heat transfer per unit of time, or Q = W

The S.-B. constant: #σ = 5.6703 10^-8# #("W/"m^2*K^4")#

T is the temperature in Kelvin, the absolute:

T1 represents the first object, and T2 represents the second.

A = area of the emitting body#(m^2)#

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Henry Asbill

Radiation heat transfer can be calculated using Stefan-Boltzmann Law or the radiative heat transfer equation, which takes into account the emissivity of the material, the Stefan-Boltzmann constant, the temperature of the radiating surface, and the temperature of the surroundings.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.