技术中心

【英文篇名】 Decision method of thermoeconomic life of piping insulation 【作者中文名】 李世武; 宋昌奇; 【作者英文名】 By Li Shiwu ★★Northwestern Polytechnical University; Xi'an; China and Song Changqi; 【作者单位】 西北工业大学; 【文献出处】 暖通空调, Hv 更新; 热经济寿命; 【英文关键词】 heat insulation layer; replacement; thermoeconomic life; 【摘要】 利用保温裸露因数的概念来反映保温层保温性能的变化 ,提出采用统一原则来建立适用于单元系统和复合系统保温层热经济寿命的数学模型 ,并通过实例证明在热经济寿命终了时更新保温层 ,可使系统的运行具有最大的经济性 【英文摘要】 Proposes the exposed coefficient of heat insulation, which describes the change of the effect of heat insulation. Based on the same rule of determining the replacement period of heat insulation layer, i.e. thermoeconomic life, presents the mathematical model suitable for unitary systems and compound systems. An example shows that replacing heat insulation at the ending of thermoeconomic life can improve effectively economic benefits of piping operation. 【基金】 航空科学基金项目 (编号 :0 3C5 3 0 18)