技术中心

【英文篇名】 Freezing prevention for outdoor pipes with insulation layer and heating wire and its economic analysis 【作者中文名】 李炎锋; 贾衡; 李俊梅; 【作者英文名】 By Li Yanfeng; Jia Heng and Li Junmei?Beijing Polytechnic University; China; 【作者单位】 北京工业大学; 【文献出处】 暖通空调, Hv 防冻; 经济分析; 保温层; 【英文关键词】 tube; freezing prevention; economic analysis; insulation layer; 【摘要】 认为在寒冷地区露天管道特别是小管径管道单纯靠增加保温层厚度不能防止管道冻结 ,提出绝热保温加电伴热防冻方案 ,并分析其热力学特性和经济性 ,给出计算最佳保温层厚度的公式。 【英文摘要】 Considers that the freezing can not be prevented for outdoor pipes, especially small diameter pipes in cold areas if only depend on increasing the thickness of insulating material. Presents the freezing prevention method of increasing the thickness of insulating material together with heating wire. Analyses it's economic and thermodynamic characteristics. Gives out a formula to calculate the optimal thickness of insulating material.