TY CONF TI HEAT TRANSFER PROCESS INTENCIFICATION IN SHALL-AND-TUBE HEAT EXCHANGERS KW shell-and-tube heat exchanger KW heat transfer process intensification KW heat exchangers tubes KW transverse annular knurling JO INDUSTRIAL THERMAL POWER ENGINEERING AU Panchenko, S.L. AU Hripchenko, M.S. AU Novikov, A.P. AU Tolstov, S.A. AU Tolstova, A.S. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov