2003 ASME Power Conference Steam Jet Air Ejector Performance Evaluation for Nuclear Plants Sunder...
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Transcript of 2003 ASME Power Conference Steam Jet Air Ejector Performance Evaluation for Nuclear Plants Sunder...
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0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Tt 58.8 79.0 91.7 101.1 108.7 115.1 120.6 125.4 129.8 133.8AF 30% 30% 30% 30% 30% 30% 30% 30% 30% 30%VF 70% 70% 70% 70% 70% 70% 70% 70% 70% 70%AF/VF 43% 43% 43% 43% 43% 43% 43% 43% 43% 43%Ma 29 29 29 29 29 29 29 29 29 29Mv 18 18 18 18 18 18 18 18 18 18Pa 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.1Pv 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 3.9Tv 52.3 72.0 84.3 93.4 100.7 106.9 112.2 116.9 121.1 125.0Tt - Tv 6.5 7.1 7.5 7.7 8.0 8.2 8.4 8.5 8.7 8.8
Total Pressure Pt, in.HgA
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0.01.02.03.04.05.06.07.08.09.0
10.011.012.013.014.015.016.017.018.019.020.021.022.023.024.025.0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Total Condenser Pressure, in.HgA
Cool
ing
of M
ixtur
e, F
Air Fraction 20% Air Fraction 30% Air Fraction 40% Air Fraction 50% Air Fraction 60%
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25000
30000
35000
40000
45000
50000
55000
60000
65000
30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135
Condensate Temp., F
Henr
y's C
onst
ant
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Total Cond. Press.
Pt, in.HgA
Total Cond.
Temp. Tt, F
Henry's Constant HO2,
Atmosphere/Mole Fraction
Partial Press.Pa,
in.HgA
Partial Press. Pv,
in.HgA
Vapor Sat.
Temp. Tv, F
Air Fraction AF, %
Subcooling Tt - Tv, F
1.00 79.04 44377 0.025 0.975 78.26 4.0% 0.782.00 101.14 52541 0.030 1.970 100.64 2.4% 0.503.00 115.06 56720 0.032 2.968 114.67 1.7% 0.384.00 125.42 59731 0.034 3.966 125.10 1.4% 0.31
NOTES:1. Pa = (HO2 x DO)/(25.07E06 x 0.49115)2. Tt corresponds to Pt3. Pv = Pt - Pa4. Tv corresponds to Pv5. AF = Pa/(Pa + 0.6207 Pv)
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0.500 1.000 1.500 2.000 2.500 3.000 3.500 4.000 4.500 5.000PARTIAL PRESSURE OF VAPOR, IN.HGA
PART
IAL
PRES
SURE
OF
AIR,
IN.H
GA
0.00%
1.00%
2.00%
3.00%
4.00%
5.00%
6.00%
7.00%
8.00%
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10.00%
11.00%
12.00%
13.00%
14.00%
15.00%
16.00%
17.00%
18.00%
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20.00%
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22.00%
AIR
FRAC
TION
, %
7 PPB 14 PPB 21 PPB 28 PPB 35 PPB 42 PPB
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0
5
10
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25
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35
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0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0CONDENSATE SUBCOOLING, F
DO, P
PB
1.0 IN.HGA 1.5 IN.HGA 2.0 IN.HGA 2.5 IN.HGA 3.0 IN.HGA 3.5 IN.HGA 4.0 IN.HGA4.5 IN.HGA 5.0 IN.HGA
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Steam Jet Air Ejector (SJAE)Performance Evaluationfor Nuclear PlantsAbstractIntroductionIntroduction (contd.)Introduction (contd.)Properties of Saturated NC Gases-Water Vapor MixtureTable 1 Partial Pressures of Air & Vapor for AF of 30%Properties of Saturated NC Gases-Water Vapor Mixture (contd.)Fig. 1 Cooling of Air-Vapor Mixtures for Different AFPartial Pressures, Condensate DO & SubcoolingFig. 2 Henrys ConstantTable 2 Partial Pressures, Subcooling for 7 PPB DOPartial Pressures, Condensate DO & Subcooling (contd.)Fig. 3 Partial Pressures for Different AF & DOFig. 4 Subcooling for Different Condenser Pressures & DOHEI Standards for Surface CondensersSizing Venting EquipmentSizing Venting Equipment (contd.)Sizing Venting Equipment (contd.)Sizing Venting Equipment (contd.)Sizing Venting Equipment (contd.)Condenser/SJAE System InterfaceCondenser/SJAE System Interface (contd.)Condenser/SJAE System Interface (contd.)Performance Issues Condenser Air CoolerPerformance Issues Condenser Air Cooler (contd.)Performance Issues PrecoolerPerformance Issues First & Second Stage Steam JetsPerformance Issues First & Second Stage Steam Jets (contd.)Performance Issues First & Second Stage Steam Jets (contd.)Intercondensers/AftercondensersPerformance Monitoring/TroubleshootingPerformance Monitoring/Troubleshooting (contd.)Performance Monitoring/Troubleshooting (contd.)Conclusions & RecommendationsConclusions & Recommendations (contd.)