# How do you calculate radiation heat transfer?

##### 1 Answer

Jun 28, 2017

#### Answer:

By Stefan–Boltzmann set of formulae.

#### Explanation:

The **Stefan–Boltzmann law** describes the power(energy) radiated from the ideally absorptive black body .

Transference of heat by emission and later absorption of electromagnetic radiation (via waves) between two bodies.

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or
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Q = heat transfer per unit time (W)

The S.-B. constant:

T = absolute temperature in Kelvin (K) :

T1= of the first object , T2= of the second object.

A = area of the emitting body