对生物质在链条炉中的燃烧辐射传热特性进行数值模拟研究，并与烟煤的燃烧辐射传热特性进行对比。结果表明：与烟煤相比较，生物质燃烧温度较低，最高温度约为2000K，烟煤的最高温度约为2200K，生物质温度分布比较均匀；生物质的辐射热流密度低于烟煤，生物质辐射热流密度为120-320kW／m^2，烟煤辐射热流密度为150-440kW／m^2，生物质和烟煤的的辐射传热系数比较接近，在120-240W·m^2K^-1之间。烟煤的玻尔兹曼特征数大于生物质。
Radiation heat transfer characteristics of biomasses in grate furnace are numerically sim- ulated, and compared with those of bituminous coal. The results show that combustion temperature for biomass fuel is lower than coal, the maximum temperature for biomass can reach 2000 K or so, but the maximum temperature for bituminous con is about 2200 K. Temperature distribution of biomass is more homogeneous than bituminous coal. The radiation heat flux for biomass is lower than bituminous coal, radiation heat flux for biomass is 120-320 kW/m^2, and radiation heat flux for coal is 150-440 kW/m^2. The radiation heat transfer coefficient for biomass is close to bituminous coal which can reach 120-240 W·m-2.K^-1 or so. Boltzmann number of coal is higher than biomass.
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