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Maximum Temperature at Pump's Required NPSH The calculator estimates the maximum condensate temperature (°F) that a centrifugal pump can handle for various values of Net Positive Suction Head Required (NPSHR). A pump's NPSHR can be determined from a pump's Performance Curve that is provided ...
Vapor pressure of a fluid is expressed as absolute pressure. So absolute pressure is used for calculating NPSHa using the formula: NPSHa = Ha – Hvp. Ha = absolute pressure of the fluid at the inlet of the pump Hvp = absolute vapor pressure of the fluid at the operating temperature Using...
在管道系统中,局部水头损失只占沿程水头损失的10%以下,或管道长度大于1000倍管径时,在水力计算中可略去局部水头损失和出口流速水头,称为长管;否则称为短管。在短管水力计算中应计算局部水头损失和管道流速水头。 2沿程水头损失计算公式 2.1达西公式(适用于圆管满流) 式中: —沿程阻力系数; l—管道长度,m; D—...
According to the formula of net positive suction head of centrifugal pump,the main factors which affect pump cavitation are the design of pump casing and impeller inlet. 根据离心泵汽蚀余量的计算公式来分析影响泵汽蚀特性的因素,主要包括泵体设计和叶轮进口设计。 更多例句>> 5) effective cavitation ...
According to the formula of net positive suction head of centrifugal pump,the main factors which affect pump cavitation are the design of pump casing and impeller inlet. 根据离心泵汽蚀余量的计算公式来分析影响泵汽蚀特性的因素,主要包括泵体设计和叶轮进口设计。 更多例句>> 5) corrosion allowance 腐...
The relation ship of net positive suction head of pump versus silt-content in silt- leder water flow is analyzed and established theoretically. 从理论上分析推导了抽送含沙水流时泵的汽蚀余量随含沙量的变化关系。 3. According to the formula of net positive suction head of centrifugal pump,the main...
According to the formula of net positive suction head of centrifugal pump,the main factors which affect pump cavitation are the design of pump casing and impeller inlet. 根据离心泵汽蚀余量的计算公式来分析影响泵汽蚀特性的因素,主要包括泵体设计和叶轮进口设计。 更多例句>> 补充资料:NPSH 分子式:CAS...