| 摘要 |
PROBLEM TO BE SOLVED: To execute designs and operations of transporting lines with high-precision by precisely calculating and estimating pressure losses. SOLUTION: A system for calculating a pressure loss estimates a pressure lossΔP/L in a pipe length L by the formulaΔP/L=150(1+2dp/(3D(1-ε)))<SP>2</SP>η(1-ε)<SP>2</SP>/(ε<SP>3</SP>((1-0.645ϕs)dp)<SP>2</SP>)Ua+1.75ρa(1-ε)/(ε<SP>3</SP>(1-0.645ϕs)dp)Ua<SP>2</SP>, using a rate of straight lineϕs, a sphere-equivalent diameter dp, a void rationε, a fluid velocity Ua, a fluid densityρa, a fluid viscosityη, and a pipe inner diameter D. COPYRIGHT: (C)2008,JPO&INPIT
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