预制自保温地热砖地面辐射采暖系统实测模拟

Test Simulation for the Prefabricated Insular Geothermal Brick Radiant System

目的通过分析验证预制自保温地热砖地面辐射系统采暖效果优于传统地面辐射采暖系统.方法运用Fluent数值模拟分析了两种采暖系统的单位面积向上及向下的散热量、地板表面平均温度等参数的数值解,对比分析了两种供暖系统的热工性能和室内热环境.结果在相同供水温度和流量条件下,预制自保温地热砖地面辐射采暖系统漏热量为总散热量的10.96%,而传统地面辐射采暖系统漏热量为总散热量的16.1%.预制自保温地热砖地面辐射采暖系统房间各测点温度均略高于传统地面辐射采暖系统对应测点温度.结论预制自保温地热砖地面辐射采暖系统热工性能优于传统地面辐射系统,可以在实际工程应用中逐步推广,发挥其节能环保效益.

To verify that the prefabricated insular geothermal brick radiant system behaves for heating better than the conventional thermal radiant system,tw o systems w ith parameters,such as upw ard and dow nw ard heat dissipation,average temperature above the floor surface,w ere analyzed by the Fluent numeral simulation. Comparisons of the thermal behavior and the indoor thermal environment for the tw o systems w ere carried out. Results show that under the condition of the same w ater temperature and the same flow,the leakage heat of the prefabricated insular geothermal brick radiant system is 10. 96% of the total heat amount,but the leakage heat of the conventional system is 16. 1%. The temperatures of measured spots in the former system are a little higher than that in the latter one. Conclusion is that the prefabricated insular geothermal brick radiant system behaves better in thermal performance than the conventional thermal radiant system. it should be gradually introduced in the practical engineering applying to reduce the energy consumption.