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

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%

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

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)

0.000

0.050

0.100

0.150

0.200

0.250

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%

9.00%

10.00%

11.00%

12.00%

13.00%

14.00%

15.00%

16.00%

17.00%

18.00%

19.00%

20.00%

21.00%

22.00%

AIR

FRAC

TION

, %

7 PPB 14 PPB 21 PPB 28 PPB 35 PPB 42 PPB

0

5

10

15

20

25

30

35

40

45

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

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.)