The results of calculation of the heat flux from a spherical particle
are presented, The kinetic Boltzmann equation, which describes the sta
te of a gas surrounding the particle, is solved by the Lees method. A
more exact approximation for the distribution function than in the sta
ndard procedure of the Lees method is applied This distribution functi
on describes the transition to the Chapman-Enskog distribution and giv
es the value of the temperature jump for a large particle, which is cl
ose to the correct value.