Heat Transfer Lab Equipment

The most commonly used law of Thermal Radiation is the Stefan-Boltzmann low which states that the thermal radiation heat flu emitted from a block surface (one which absorbs all the incident radiation falling on it) is proportional to the fourth power of the absolute temperature of the surface and is given by the following equation.
(qA) Heat flux in WMsq. = σT = eb4 Where, T is the surface temp. which emits thermal radiation in K
And Stefan – Boltzmann constant,
σ=5.67 x 10-8 WM sq.—K4
eb = Emissivity power of black surface. The Stefan – Boltzmann low can be derived
by integrating planks law