TY JOUR TI THEORETICAL ANALYTICAL SOLUTION OF PROBLEM ON STATIONARY SUBCRITICAL CURRENT OF GASEOUS HEAT CARRIER IN PIPING BIFURCATIONS OF HEAT-EXCHANGE EQUIPMENT KW analytical solution KW stationary subcritical current KW heat carrier KW gas KW piping KW bifurcation KW heat-exchange device JO Bulletin of Bryansk state technical university AU Lobanov, I.E. PY 2019 IS 2019 PB Bryansk State Technical University