Flaresim for Windows, case

5/29/2022 10:48:26 AM	Flaresim 5.2.2.1381	Page 1
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QUALITY ASSURANCE CONTROL SHEET

Check Code
Calculations By
Date
Time
Calculations Approved by
Date
Time

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Calculation Options


General
Method	Flaresim API	Nbr Flame Elem.	1	Calculation mode	Sizing
Element Position	50	Active Environment	Environment 1	Noise Method	Spectrum
Liquid Buoyancy	0.030 m/s	Pipe Buoyancy	3.048 m/s	Sonic Buoyancy	4.572 m/s

Options
Expert Mode	Ignored	Windchill	Ignored	Noise Attenuation	Active
Jet Dispersion	Ignored	Gaussian Dispersion	Ignored
Run Dynamics	False	Run Case Studies	True


Heat Transfer Coef. in W/m2/K			Temperature Rise Calculations
HTC = 1.25 * WindSpeed^ 1.00 + 4.54	Wind speed below	4.572 m/s	Exposure Time	900.0 s
HTC = 3.18 * WindSpeed^ 0.75 + 0.00	For higher wind speeds		Nbr of Steps	90


Emission Data
NOX Basis	Mass/Heat Release	CO Basis	Mass/Heat Release	HC Basis	Mass/Heat Release
NOX Rate	0.02923 kg/GJ	CO Rate	0.15900 kg/GJ	HC Rate	0.06016 kg/GJ


Fitting Data
Fitting Tip		Fitting Point	<All Active>
Fitting Result	-----	Fitting Error	-----


Sizing Information
Stack to be sized	Stack 1	Minimum Length	5.00 m	Maximum Length	100.00 m
Sizing Wind Direction	315.00 °	Sizing Wind Speed	10.000 m/s	Calculated Size	16.78 m

Pressure Profile
Pressure Tolerance	0.000 bar	Tip Elements	4	Riser Elements	40

Dispersion Data
Jet Disp. Averaging	Short	Jet Disp. Stop Conc.	0.00001 mole/mole

Environmental data


Environment: Environment 1 - Active

Atmosphere
Pressure	1.007 bar	Temperature	49.4 C	Humidity	34.94 %
Wind Speed	10.000 m/s	Wind Direction	315.00 °


Background
BackGround Noise	60.0 dB	Solar Radiation	1.040 kW/m2
Inc. Background Noise	Active	Inc. Solar Radiation	Active


Transmissivity
Method	Calculated	Min Value	1.000	Max Value	1.000

5/29/2022 10:48:26 AM	Flaresim 5.2.2.1381	Page 3
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Wind Rose Calculations
Wind Speed Array	Ignored	Wind Speed vs Direction	Ignored


Dispersion Data
Stability Class	PasquillD	Terrain Class	Rural	Surface Roughness	0.20 m
Wind Reference Height	10.00 m	Correct Wind Speed	False

Stack Configuration Data

Stack: Stack 1 - Active

Input Data

Base point name	Stack 1 (Base)	Base refers to	Origin
Base - Northing	0.00 m	Base - Easting	0.00 m	Base - Elevation	0.00 m
Base - Angle from North	0.00 °	Base - Angle to Horizontal	0.00 °	Base - Radius	0.00 m

Stack
Rotation from North	0.00 °	Angle to Horizontal	90.00 °	Stack Length	16.78 m

Sterile Area
Elevation	0.00 m		Noise Basis	Noise		Run SA Calcs	True

Radiation Limit kW/m2	Distance Limit m
1.577	68.33
3.155	27.57
4.732	8.81
6.309	Limit Not Reached

Noise Limit dB	Distance Limit m
80.0	379.35
90.0	126.00
100.0	36.41
110.0	Limit Not Reached

Fluid Data


Fluid: Depressurizing by PCV-2152


Input Data

Thermo Method	Flaresim
Use Temp Corr.	False		Use RK ZFactor	True


LHV	42716.94 kJ/kg	Tc	-25.5 C	LEL	3.81 %
Fluid Temperature	33.0 C	Pc	49.635 bar	Saturation	100.00 %
Molecular Weight	24.572	Cp/Cv	1.275	Ref. Pressure	1.200 bar

5/29/2022 10:48:26 AM	Flaresim 5.2.2.1381	Page 4
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Composition in mole fraction
Nitrogen	0.003006	Carbon dioxide	0.031839	Hydrogen sulphide	0.054519
Methane	0.643638	Ethane	0.138531	Propane	0.077885
i-Butane	0.008456	n-Butane	0.018731	i-Pentane	0.007019
n-Pentane	0.003802	n-Hexane	0.006597	n-Heptane	0.001970
n-Octane	0.000600	n-Nonane	0.000299	n-Decane	0.000100
Water	0.003007


Results

Flue to Feed Volume Ratio	3.813		Stoichiometric O2	2.604
Enthalpy @ 25°C	458.70 kJ/kg		Enthalpy @ Fluid Temp.	473.44 kJ/kg

Stoichiometric Flue Gas Composition
Carbon Dioxide	0.37006 mole/mole	Water	0.61485 mole/mole	Oxygen	0.00000 mole/mole
Nitrogen	0.00079 mole/mole	Sulphur Dioxide	0.01430 mole/mole

Assist Fluids


Assist Fluid: AssistFluid 1

Type	Air	Flow Basis	Smokeless	Smokeless Method	Flaresim
Assist Fluid Ratio	1.000	Correct Heat Radiated	Active	Length Correction	Active

Tip Data


Tip: Tip 1 - Active


Input Data


General
Tip Type	Pipe	Located on stack	Stack 1	Nbr of Burners	1
Angle to Horizontal	90.00 °	Angle to North	0.00 °
Tip Length	3.00 m	Tip Diameter	254.00 mm	Tip Opening	100.00 %
Seal Type	Molecular 1	Diameter Basis	Tip


Fluids
Fluid	Depressurizing by PCV-2152	LP Fluid		Assist Fluid	AssistFluid 1
Fluid Mass Flow	18887.886 kg/h	LP Mass Flow	0.000 kg/h	Assist Mass Flow	-----
Fluid Mole Flow	0.214 kgmole/s	LP Mole Flow	0.000 kgmole/s


Pressure Drop
Riser Diameter	254.00 mm	Tip Outlet Pressure	-----	Contraction Coeff.	1.000
Roughness	0.02500 mm	Exit Loss	1.000

5/29/2022 10:48:26 AM	Flaresim 5.2.2.1381	Page 5
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Flame and Radiation
F Factor Method	Generic Pipe
Combustion Air Ratio	1.000	Flame Temperature	1468.1 C
Flame Length Method	Flaresim
Radiation Method	Global	Flame Element Count	1	Element Position	50.00 %


Noise
Noise Method	Acoustic Eff.	Comb. Efficiency	0.00010 %	Peak Frequency	500 Hz
Jet Noise Method	Flaresim


Purge Gas
Purge Gas Fluid	Nitrogen	Purge Area Basis	Stack	Purge Fixed Velocity	0.060 m/s
Purge Fixed Volume Flow	0.283 m3/h	Purge HUSA O2	6.00 %	Purge HUSA Height	7.62 m


Emission Data
NOX Basis	Mass/Heat Release	CO Basis	Mass/Heat Release	HC Basis	Mass/Heat Release
NOX Rate	0.02923 kg/GJ	CO Rate	0.15900 kg/GJ	HC Rate	0.06016 kg/GJ


Dynamic Input

Time s	HP Mass Flow kg/h	LP Mass Flow kg/h

-----


Tip: Tip 1 - Results


General
Flame Length	16.11 m	Heat Release	224119.5 kW	Tip End - Northing	0.00 m
API Flame Length	32.21 m	Frac.Heat Radiated	0.143	Tip End - Easting	0.00 m
Exit Temperature	33.0 C	Actual Volume Flow	19360.271 m3/h	Tip End - Elevation	19.78 m
Assist Fluid Mass Flow	94439.430 kg/h	Assist Fluid Flow Ratio	5.000	Wind Speed At Tip	10.000 m/s


Velocities and Pressure Drop
Exit Velocity	106.134 m/s	Tip Outlet pres.	1.007 bar	Total Outlet pres.	1.062 bar
Sonic Velocity	362.750 m/s	Tip Backpres.	1.016 bar	Total Backpres.	1.070 bar
Exit Mach Number	0.293	Seal Backpres.	1.024 bar	Total Backpres.	1.078 bar
Contraction Coeff.	1.000	Stack Backpres.	1.071 bar	Total Backpres.	1.122 bar
		Tip Pressure Drop	0.009 bar	Tip Total Pressure Drop	0.008 bar
		Seal Pressure Drop	0.009 bar	Seal Total Pressure Drop	0.008 bar
		Stack Pressure Drop	0.047 bar	Stack Total Pressure Drop	0.044 bar


Flame Shape Points
	X	Y	Z

0.00 m

19.78 m

-6.29 m

6.29 m

32.08 m

5/29/2022 10:48:26 AM	Flaresim 5.2.2.1381	Page 6
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3D Flame Shape Chart


2D Flame Shape Chart, Northing-Easting

5/29/2022 10:48:26 AM	Flaresim 5.2.2.1381	Page 7
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2D Flame Shape Chart, Northing-Elevation


2D Flame Shape Chart, Easting-Elevation


Noise Results
Peak sound pressure
Distance	30.00 m	Sound pressure	103.0 dB

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Noise Spectrum Results

Frequency Hz	Total PWL dB	Combustion PWL dB	Jet PWL dB
31.3	106.1	106.0	83.7
62.5	114.5	114.5	88.7
125.0	123.0	123.0	88.1
250.0	131.5	131.5	85.0
500.0	140.0	140.0	80.1
1000.0	137.2	137.2	74.4
2000.0	134.4	134.4	68.5
4000.0	131.6	131.6	62.5
8000.0	128.8	128.8	56.5
16000.0	126.0	126.0	50.5


Noise Spectrum


Combustion Results General
Adiabatic Flame Temperature	1678.7 C	Calculated Flame Temperature	1468.1 C


Combustion Gas Mass Flow
Carbon dioxide	47396.396 kg/h	Water	32353.596 kg/h	Oxygen	22259.666 kg/h
Nitrogen	280247.878 kg/h	Sulphur dioxide	2684.726 kg/h	Nitrogen monoxide	23.588 kg/h
Carbon monoxide	128.283 kg/h	Methane	48.540 kg/h	Argon	4605.831 kg/h

5/29/2022 10:48:26 AM	Flaresim 5.2.2.1381	Page 9
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Combustion Gas Mole Flow
Carbon dioxide	0.299 kgmole/s	Water	0.499 kgmole/s	Oxygen	0.193 kgmole/s
Nitrogen	2.779 kgmole/s	Sulphur dioxide	0.012 kgmole/s	Nitrogen monoxide	0.000 kgmole/s
Carbon monoxide	0.001 kgmole/s	Methane	0.001 kgmole/s	Argon	0.032 kgmole/s


Purge Gas Results
Fixed velocity rate	11.507 kg/h	Fixed volume velocity	0.002 m/s	Fixed volume rate	0.297 kg/h
HUSA velocity	0.003 m/s	Reduced HUSA velocity	0.003 m/s	API velocity	-----
HUSA rate	0.517 kg/h	Reduced HUSA rate	0.517 kg/h	API flow	-----

Receptor Points


Receptor Point Summary

Name	Status	Northing	Easting	Elevation	Radiation	Avg. Noise	Noise	NoiseA	Temp.
		m	m	m	kW/m2	dB	dB	dB	C

Point 1

Active

0.00

4.728

96.5

106.5

105.2

115.3


Receptor Point: Point 1 - Active


Input Data

Location		Properties		Sizing
Northing	0.00 m	Emissivity	0.700	Max. Radiation	4.730 kW/m2
Easting	0.00 m	Absorbtivity	0.700	Observed Radiation	-----
Elevation	0.00 m	Mass per Area	24.0 kg/m2	Max. Noise	-----
Location rel. to	Stack 1 (Base)	Area Ratio	2.000	Max. Average Noise	-----
Angle From North	0.00 °	Mass Cp	450.000 J/kg/C	Max.A Noise	-----
Angle To Horizontal	0.00 °	Initial Temp.	15.6 C	Max.Temp.	-----
Radius	0.00 m	Orientation	None
		Local Environment	Global


Results

Radiation		Temperature		Noise
Radiation	4.728 kW/m2	Temperature	115.3 C	Average Noise	96.5 dB
Concentration		Local Wind Speed		Noise	106.5 dB
Concentration	-----	Local Wind Speed	10.000 m/s	Noise A (*)	105.2 dB

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Noise Spectrum Results

Frequency	Noise	*Noise A ()**

31.3 Hz

69.6 dB

30.2 dB

62.5 Hz

77.7 dB

51.5 dB

125.0 Hz

86.1 dB

70.0 dB

250.0 Hz

94.6 dB

86.0 dB

500.0 Hz

103.1 dB

99.9 dB

1000.0 Hz

100.3 dB

2000.0 Hz

97.5 dB

98.7 dB

4000.0 Hz

94.5 dB

95.5 dB

8000.0 Hz

90.5 dB

89.4 dB

16000.0 Hz

82.7 dB

76.1 dB


(*) Noise A = Noise weighted for human ear sensitivity


Noise Chart


Time Dependent Curves


Time	Temp.	TDU	Time	Temp.	TDU
s	C	(kW/m2)4/3.s	s	C	(kW/m2)4/3.s

0.0

15.6

0.0

10.0

19.9

79.4

20.0

24.1

158.7

30.0

28.2

238.1

40.0

32.1

317.4

50.0

35.8

396.8

60.0

39.3

476.1

70.0

42.8

555.5

80.0

46.0

634.8

90.0

49.2

714.2

100.0

52.2

793.5

110.0

55.1

872.9

120.0

57.8

952.2

130.0

60.5

1031.6

140.0

63.0

1111.0

150.0

65.4

1190.3

5/29/2022 10:48:26 AM	Flaresim 5.2.2.1381	Page 11
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Time	Temp.	TDU	Time	Temp.	TDU
s	C	(kW/m2)4/3.s	s	C	(kW/m2)4/3.s

160.0

67.7

1269.7

170.0

69.9

1349.0

180.0

72.0

1428.4

190.0

74.1

1507.7

200.0

76.0

1587.1

210.0

77.8

1666.4

220.0

79.6

1745.8

230.0

81.3

1825.1

240.0

82.9

1904.5

250.0

84.4

1983.8

260.0

85.9

2063.2

270.0

87.3

2142.6

280.0

88.6

2221.9

290.0

89.9

2301.3

300.0

91.1

2380.6

310.0

92.2

2460.0

320.0

93.4

2539.3

330.0

94.4

2618.7

340.0

95.4

2698.0

350.0

96.4

2777.4

360.0

97.3

2856.7

370.0

98.1

2936.1

380.0

99.0

3015.5

390.0

99.8

3094.8

400.0

100.5

3174.2

410.0

101.2

3253.5

420.0

101.9

3332.9

430.0

102.6

3412.2

440.0

103.2

3491.6

450.0

103.8

3570.9

460.0

104.3

3650.3

470.0

104.9

3729.6

480.0

105.4

3809.0

490.0

105.9

3888.3

500.0

106.3

3967.7

510.0

106.8

4047.1

520.0

107.2

4126.4

530.0

107.6

4205.8

540.0

107.9

4285.1

550.0

108.3

4364.5

560.0

108.7

4443.8

570.0

109.0

4523.2

580.0

109.3

4602.5

590.0

109.6

4681.9

600.0

109.9

4761.2

610.0

110.1

4840.6

620.0

110.4

4919.9

630.0

110.6

4999.3

640.0

110.9

5078.7

650.0

111.1

5158.0

660.0

111.3

5237.4

670.0

111.5

5316.7

680.0

111.7

5396.1

690.0

111.9

5475.4

700.0

112.0

5554.8

710.0

112.2

5634.1

720.0

112.3

5713.5

730.0

112.5

5792.8

740.0

112.6

5872.2

750.0

112.8

5951.5

760.0

112.9

6030.9

770.0

113.0

6110.3

780.0

113.1

6189.6

790.0

113.2

6269.0

800.0

113.3

6348.3

810.0

113.4

6427.7

820.0

113.5

6507.0

830.0

113.6

6586.4

840.0

113.7

6665.7

850.0

113.8

6745.1

860.0

113.9

6824.4

870.0

113.9

6903.8

880.0

114.0

6983.1

890.0

114.1

7062.5

900.0

114.1

7141.9

5/29/2022 10:48:26 AM	Flaresim 5.2.2.1381	Page 12
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Temperature Chart


TDU Chart

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Receptor Grids


Receptor Grid: Grid 1 - Active


Input Data

Location		Properties		Noise
Orientation	Northing-Easting	Emissivity	0.700	Noise Basis	Noise
Offset	0.00 m	Point Absorbtivity	0.700
Axis 1	Northing	Area Ratio	2.000
Axis 2	Easting	Point Orientation	None


Axis information
Northing	Minimum	-200.00 m	Maximum	200.00 m	Nbr. of Points	201
Easting	Minimum	-200.00 m	Maximum	200.00 m	Nbr. of Points	201


Results


Maximum Radiation
Sizing Limit	-----	Find Max. Rad.	True	Initial Grid Points	11
Radiation	4.836 kW/m2	Northing	-3.14 m	Easting	3.14 m


Radiation chart

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Temperature chart


Noise chart

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Messages


Level	Message

Info:

Calculations started at 5/29/2022 10:38:29 AM

Info:

Calculating base case

Info:

Sizing calculations complete

Info:

Point Point 1 : Calculated

Info:

Grid Grid 1 : Calculated

Info:

Calculations completed at 10:38:30 AM