TY JOUR TI THE CALCULATING RESEARCH OF IMPROVING POSSIBILITY OF THE THERMAL STATE OF GAS-TUBE EXHAUST BOILER’S ELEMENTS KW heat transfer KW thermal stress KW mathematical modeling KW temperature field KW thermal insulation insert KW exhaust boiler’s neck JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Bevza, D.. AU Valiulin, S.. AU Shuraev, O.. PY 2017 IS PB Astrakhan State Technical University