What is the view factor F21 for sphere of diameter D inside a cubical box of length L = D?
A radiation shield should
On a summer day, a scooter rider feels more comfortable while on move than while at a stop light because
More heat is. lost by forced convection as the value of heat transfer coefficient is large because it depends on fluid properties, velocity of flow and surface condition.
Thermal radiation extends over the range of
Fraction of radiative energy leaving one surface that strikes the other surface is called
Shape factor represent the fraction of the energy emitted by one surface and received by the other.
q1 = Total energy emitted by body 1
q12 = Energy emitted by (1) and received by (2)
Shape factor can be termed a
Wave length for maximum power is given by
Stefan-Boltzmann’s law is applicable to
What is the basic equation of thermal radiation from which all other equations of radiation can be derived
Which one of the following is the correct representation of reciprocity theorem