蒸汽电磁阀密度计算介绍说明

超高温电磁阀——水蒸汽密度计算公式

乌卡诺维奇状态方程

ρ=

式中 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—绝压，MPa，P=P表+0.101325;

T=t+273.15，°K; t—工况温度，℃;

ρ—密度，kg /m3

R—气体常数，R=461J/(kg·K)，

φ=103/T。