扬程是指水泵能够扬水的高度,是泵的重要工作性能参数,又称压头。可表示为流体的压力能头、动能头和位能头的增加,即: H=(p2-p1)/ρg+(v2²-v1²)/2g+z2-z1 式中 H——扬程,m; p1,p2——泵进出口处液体的压力,Pa; v1,v2——流体在泵进出口处的流速,m/s; z1,z2——进出口高度,m; ρ——液体密度,kg/m³; g——重力加速度,m/s²。
vt. lift
misc. head of delivery
水泵选型方法的研究_轴流泵,混流泵_中国环保设备展览网 关键词 水泵; 选型方法; 扬程 [gap=661]keywords pump; pump se-lect; lifting
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...泵,能耗,扬程,供回水温差, [gap=787]s:fan coil,supply water temperature,water chiller,water pump,energy consumption,head,supply-return water temperature difference, ..
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The influences of geometrical parameters on low specific pump head should be emphasized on comprehensive influence.
低比转速泵几何参数对扬程的影响,应当侧重于综合影响的研究。
参考来源 - 低比转速泵几何参数对扬程综合影响的灰色理论分析In comparison with common centrifugal fanner, axial-flow fanner has a bigger fluxand lower lift.
轴流风机与常用的离心风机相比是一种大流量低扬程的风机。
参考来源 - 轴流风机扇叶的仿真与分析Amount of data of the experiment about input voltage, output, and delivery lift natural parameter is collected, and analysis by Origin6.1.
实验大量采集了电动机的输入电压、功率、水泵的流量、扬程等特性参数,利用Origin 6.1软件对这些数据进行处理分析。
参考来源 - 竖直输送系统中节能曝气泵的实验研究·2,447,543篇论文数据,部分数据来源于NoteExpress
我国已建及计划待建的大型泵站工程多为低扬程泵站。
Many of the large pumping stations built and to-be-built in China are low-lift pumping stations.
梯级泵站具有扬程高、能耗大的特点,对其进行优化调度,经济效益相当可观。
The multistage pumping stations have characteristics of high head and great energy consumption, so it is economical to make multistage pumping stations operate in optimization.
最开始是一辆七十年代的蒙特卡洛轿车。 尼克用高扬程滚子凸轮和赛车级活塞把它的350发动机做了改装。
The first was a '70 Monte Carlo, whose 350 engine Nick had beefed up with a high-lift roller cam and racing pistons.
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