The results of the studies of heat transfer process between wall of the tubular vertical coil and pseudoplastic liquid agitated in the vessel of inner diameter D = 0.6 m are presented in the paper. The experiments were carried out within the transitional regime of the liquid flow using different types of the agitators. The results of the measurements were approximated by means of appropriate. The studies proved that system: A 315 impeller of diameter d = 0.5D-vertical coil of the parameters J = 24, B/D = 0.017, D-w/D = 0.7 enables to reach the greatest efficiency of heat transfer in an agitated vessel.