燃气锅炉房烟囱保温对排烟性能的影响分析
Relationship between heat-insulation status and smoke exhaust performance of chimney in gas-fired boiler houses
摘要：
根据北京市某燃气锅炉房的实际情况，对烟囱保温状况与排烟性能的关系进行了计算分析，结果表明：减小保温层厚度会使烟囱的排烟性能下降，尤其在保温层厚度较小时，这种影响更大。对于所研究对象，在设计排烟量的情况下,当烟囱保温层厚度小于15 mm时，排烟系统的抽力计算值小于阻力计算值。当保温层厚度增加到20 mm以后，对改善排烟性能的作用较小。
关键词：燃气锅炉,房烟囱,保温,排烟性能
Abstract：
Analyses and calculates the relationship between heat-insulation status and smoke exhaust performance of chimney in a gas-fired boiler house in Beijing. The results show that the smoke exhaust performance descends with the thickness reducing of heat-insulation layer, and the influence is more remarkable when the thickness is small. For the designed smoke flow, the draft is less than the resistance force of smoke flow when the heat-insulation thickness is less than 15 mm, and the improvement is small when the thickness is over 20 mm.
Keywords:firedboilerhouse,chimney,heat-insulation,smokeexhaustperformance