应用作者所提出的表面-颗粒-乳化团传热理论模型对粒径0.87～1.21mm，堆积密度386～870kg/m³的5种空心刚玉球粒子流化床在950℃床温时流化床与浸没表面间的传热进行了数值计算，并与文献实验数据进行了比较。计算表明，浸没表面温度对瞬时换热系数有显著影响，表面温度为900℃时的瞬时换热系数约是表面温度为300℃时的瞬时换热系数的1.6倍；粒径减小、堆积密度增加都使换热系数增大，其中粒径和堆积密度的变化对热传导系数分量的影响最为显著，对对流和辐射换热系数分量的影响相对较小。计算了传导、对流和辐射换热系数分量占总换热系数的份额，对于所用的5种粒子，950℃床温，流化数(U/U_mf)在1.1～4.0范围，对表面温度平均的总传热量中，热传导占57%～43%，辐射换热占51%～37%，对流换热占5%～3%。讨论了U/U_mf对气泡相辐射换热和乳化相辐射换热的影响。

The heat transfer between a high-temperature fluidized bed and an immersed surface has been simulated using a surface-particle-emulsion heat transfer model for five kinds of hollow spherical corundum particles with diameters 0.87～1.21mm and bulk density 386～870kg/m³ at a bed temperature of 950℃. The calculated results are compared with the experimental data. The calculations indicate that the temperature of the immersed surface has a significant influence on the instantaneous heat transfer coefficient. The instantaneous heat transfer coefficient with a surface temperature of 900℃ is about 1.6 times that at a surface temperature of 300℃. The heat transfer coefficient increases with decreasing particle diameter and increasing bulk density. The particle diameter and the bulk density have a more marked effect on the conductive heat transfer coefficient than on the convective and radiative heat transfer coefficients. For the five kinds of hollow spherical corundum particles at a bed temperature of 950℃ and the fluidization number, U/U_mf, in the range 1.1 to 4.0, the contributions to the overall heat coefficient from the surface temperatureaveraged conductive heat transfer coefficient, the radiative heat transfer coefficient and the convective heat transfer coefficient are 57%～43%, 37%～51% and 5%～3%, respectively. The influence of U/U_mf on the radiative heat transfer between the surface and bubble phase and between the surface and emulsion phase is discussed in detail.