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Biomass pyrolysis and liquefaction technology needs inert carrier gas and high energy consumption. On the basis of analyzing its energy consumption and the using way of char and off-gas, energy in the pyrolysis and liquefaction system in CFB is optimized by using a part of pyrolysis gas for carrier gas and off-gas to burn to heat biomass raw material. Inert carrier gas and its heating and cooling...
The heat damage of wheel tread and rail surface is one of the problems that need to be solved urgently. In this paper, finite element method was used to analyze the problem of three-dimensional wheel-rail thermal contact coupling. The contact patch's size of the cone and the wear type locomotive wheel tread was researched. The thermal-contact coupling was analyzed for wheel-rail temperature and stress...
When the train is hauling at high speed or processing emergency brake, the high temperature incurred by friction normally will cause fateful damage to the wheel/rail contact surface, invalidate the wheel/rail and endanger traffic safety. The main factor to cause wear, flatting and checking of the wheel/rail is the friction heat caused by the relative sliding between the wheel and the rail. Focused...
To study the effects of temperature dependent nonlinear material properties on wheel-rail thermo-elastic contact, and compare behavior of different wheel profiles, four types of wheel profiles, XP55, S1002, LM, and LMA, wheel-rail slide models were built using finite element method (FEM) software MSC.Marc. Slide temperature and thermal stress were analyzed in thermal-contact coupled and pure mechanical...
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