新型建筑给水管材阻力特性与能耗特性

Characteristic of Resistance and Losing Energy About New Material Construction Service pipe

为研究新型建筑给水管材的输水性能,对典型管材PP-R管、铝塑复合管、钢塑复合管进行了阻力特性与能耗特性的实验研究.通过实验研究,分析得出PP-R管输水中,当Re<3 326,沿程阻力系数λ与雷诺数Re满足幂函数分布;Re>3 326,沿程阻力系数与雷诺数呈线性分布;PP-R管输水能量耗散率η与雷诺数Re呈幂函数分布.铝塑复合管的沿程阻力系数与雷诺数呈对数分布,其耗散率与雷诺数呈多项式分布.钢塑复合管的沿程阻力系数与耗散率和雷诺数关系均呈幂函数分布.此研究弥补了新型建筑给水管材阻力特性的空白.

In order to research the capability of new material construction service pipe , the characteristic of resistance and energy losing of several type new material pipes are studied, such as PP-R pipe and aluminium and plastic pipe as well as steel and plastic pipe. Based on the experiment, it is gived that when Re 〈 3 326 in PP-R pipe the friction factor λ increases with Re in power function ,while Re 〉 3 326 the A increases with Re in linearity function . At the same time , the energy losing rate η of PP-R pipe increases with Re in power function . In aluminium and plastic pipe the λ increases with Re in logarithm function while the energy losing rate increases with Re in polynomial function . In steel and plastic pipe the λ and the energy losing rate increase with Re in power function. The study repairs the blank of the characteristic of resistance and losing energy of new material construction service pipes.