Steam solenoid valve density calculation introduction

Ultra-high temperature solenoid valve - water vapor density calculation formula

Ukanovic state equation

ρ=

Where F1(T)=(b0+b1φ+...+ b5φ5)×10-9

F2(T)=(c0+c1φ+...+ c8φ8)×10-16

F3(T)=(d0+d1φ+...+ d8φ8)×10-23

B0 = -5.01140 c0 = -29.133164 d0 = -34.551360

B1 =+19.6657 c1 = +129.65709 d1 = +230.69622

B2 = -20.9137 c2 = -181.85576 d2 = -657.21885

B3 = +2.32488 c3 = +0.704026 d3 = +1036.1870

B4 = +2.67376 c4 = +247.96718 d4 = -977.45125

B5 = -1.62302 c5 = -264.05235 d5 = +555.88940

C6 = +117.60724 d6 = -182.09871

C7 = -21.276671 d7 = +30.554171

C8 = +0.5248023 d 8= -1.9917134

P—absolute pressure, MPa, P=P table +0.101325;

T=t+273.15, °K; t—condition temperature, °C;

Ρ—density, kg /m3

R—gas constant, R=461J/(kg·K),

φ=103/T.