In our study of nuclear reaction 20Ne+27A at 84A MeV we proposed the new method of temperature measurements at spallation events. We have shown that this temperature can be determined applying the friction model of energy dissipation in participant spectator model of spallation process. The first order estimate of the dependence of temperature of participant zone on reaction Q-value is obtained from Fermi gas model considerations. The heat diffusion process is also discussed.