• No results found

free vent for tank sizing.pdf

N/A
N/A
Protected

Academic year: 2021

Share "free vent for tank sizing.pdf"

Copied!
5
0
0

Loading.... (view fulltext now)

Full text

(1)

ChemTech

Free Vent Sizing & Selection Report

Bridgeville, PA

28-Oct-2013

United States of America

412-220-4571

[email protected]

Quote Number:

No

Prpd.

Chk.

Appr.

Date

Revision

Client:

Location:

End-User Ref. No.:

Project:

Project Ref. No.:

1

VALVE ID

41

SIZING DATA

2

Tag No. QuickCalc003

42

Design Code

Non-Code

Sizing Std.

API2000

3

Service

43

Sizing Basis

Blocked Discharge

4

PID No.

44

Fluid State at Inlet

Gas / Vapor

5

Line No.

Quantity

45

Relieving Case

Tank P-Cond.

6

1

46

System Conditions

7

GENERAL

47

MAWP

0.25 psig

8

Valve Type

Free Vent

48

MAWV

9

49

Atmospheric Pressure

14.696 psia

10

50

Operating Temperature

60 °F

11

CONNECTIONS

51

Min. Design Temperature

20 °F

12

Inlet

8"

Drilling

150#

FF

Standard

52

Max. Design Temperature

200 °F

13

Outlet

Drilling

ANSI B16.5

53

14

MATERIALS OF CONSTRUCTION

54

15

Base

Aluminum

55

Tank Pressure Conditions

16

Hood

Aluminum

56

Fluid Name

Methane

17

57

Molecular Weight, M

16.040

18

58

Compressibility, Z

1.000

19

59

Ratio of Sp. Heats, k (Cp / Cv)

1.310

20

60

Subsonic Flow Factor, Fs

0.128

21

61

Vessel Pressure

0.25 psig

22

62

Flowing Temperature

200 °F

23

63

Required Flow

2913 SCFM

24

64

Flow Coefficient

0.825

25

65

26

66

27

67

28

68

Tank Vacuum Conditions

29

69

Fluid Name

30

SIZING / SELECTION SUMMARY

70

Molecular Weight, M

31

Model Number

700008

71

Compressibility, Z

32

Brand

Varec

72

Ratio of Sp. Heats, k (Cp / Cv)

33

Pressure Case

73

Subsonic Flow Factor, Fs

34

Required Flow

2913 SCFM

74

Vessel Vacuum

35

Maximum Flow

3567.915 SCFM

62

Flowing Temperature

(2)

ChemTech

Free Vent Calculation Report

Bridgeville, PA

28-Oct-2013

United States of America

412-220-4571

[email protected]

Quote Number:

No

Prpd.

Chk.

Appr.

Date

Revision

Client:

Location:

End-User Ref. No.:

Project:

Project Ref. No.:

1

VALVE ID

7

CALCULATION NOTES

2

Tag No. QuickCalc003

8

3

Valve Model No. 700008

Qty. 1

9

4

CALCULATION SUMMARY

10

5

Flow

Required

2913 SCFM

11

6

Max. Flow per Valve

12

TANK PRESSURE CONDITION

Variable Type

Variable Name

Symbol

Input Value

Equation Value

Fluid Properties

Molecular Weight

M

16.040

16.040

Ratio of Specific Heats

k

1.310

1.310

Compressibility

Z

1.000

1.000

Process Cond.

Required Volumetric Flow

Vreq

2913 SCFM

2913 SCFM

Tank Pressure

Ptank

0.25 psig

0.25 psig

Atmospheric Pressure

Patm

14.696 psia

14.696 psia

Relieving Temperature

T

200 °F

659.670 °R

Valve Data

Maximum Flow Coefficient

Kmax

0.825

0.825

Transition to Full Open

Tp

0.0004 psig

0.0004 psig

Shape Factor

E

0

0

Orifice Area

A

50.027 in²

50.027 in²

Calculate Inlet Relieving Pressure, Outlet Pressure, Absolute Pressure Ratio

P1 = Ptank + Patm

P1

14.946 psia

P2 = Patm

P2

14.696 psia

PR = P2 / P1

PR

0.983

Calculate Sub-Critical Flow Factor

Fs

0.128

Fs = {[k / (k - 1)] * [PR^(2 / k) - PR^((k+1)/k)]}^0.5

Calculate Differential Pressure

X

0.250

X = P1 - P2

Calculate Discharge Coefficient

Kd

0.825

If X > Tp, then Kd = Kmax, else Kd = Kmax * {sin[(X / Tp) * (π / 2)]}^E

Calculate Volumetric Flow

V

3567.915 SCFM

3567.915 SCFM

(3)

ChemTech

Pressure Relief Valve Dimensional Drawing

Bridgeville, PA

28-Oct-2013

United States of America

412-220-4571

[email protected]

Quote Number:

No

Prpd.

Chk.

Appr.

Date

Revision

Client:

Location:

End-User Ref. No.:

Project:

Project Ref. No.:

1

VALVE ID

7

SELECTION SUMMARY

2

Tag No. QuickCalc003

8

Valve Model No.

700008

3

Service

9

Brand

Varec

4

PID No.

10

CONNECTIONS

5

Line No.

Quantity

11

Inlet

8"

Drilling

150#

FF

Standard

6

1

12

Outlet

Drilling

ANSI B16.5

Wt.=

12 lb

=

5.44 kg

A=

20 in

=

508.00 mm

B=

7.75 in

=

196.85 mm

C=

=

D=

=

E=

=

F=

=

G=

=

H=

=

(4)

Pentair PRV²SIZE Software

(5)

Pentair PRV²SIZE Software

Summary Report

Project Information

Company:

Project:

Location:

Project Ref. No.:

Tag Information

Tag Number:

QuickCalc003

Revision:

Last Modified:

10/28/2013 12:07:17 PM

Prepared By:

Checked By:

Approved By:

Specific Tank Data

Sized Using User Defined Flow

Pressure Fluid:

Methane

Pressure Flow Rate:

2913

Valve Sizing Information

Valve Type:

7000, 8"

Part Number:

700008

Quantity to Order:

1

Max Pressure Flow Capacity:

3567.915 SCFM

Selected Valve Description

Code

Category

Description

7000

Style

Free Vent: FF Alum Base / Alum Hood

References

Related documents

When sizing the vent consideration should be given to the boiler pressure, size of blowdown system, inlet connection/connections (whether directly into or above water level) and

Vail 36 in a White Standard Corner Mantel with Base, trimmed with Arch Decorative Door Frame in Matte Black, Outer Frame and Bottom Trim, and Optional Stacked Limestone Liner

Since chronic kidney disease (CKD) is common in these patients, we conducted a post-hoc analysis of 2 replicate phase 3 trials and the subsequent open-label extension study to

Return Preparer Fraud generally involves the or- chestrated preparation and fi ling of false income tax returns (in either paper or electronic form) by pre-.. parers who may claim

In order for the receiver to accept the transmitter security code, be sure the slide button on the receiver is in the REMOTE position; the receiver will not LEARN if the slide

A well-documented independent study on the effects of vent-free gas products emissions (see pages 16-17) concluded that vent-free gas heating products perform well within

position (thermostat models only) 1. Control knob not fully pressed in 2. Control knob not pressed in long enough 3. Equipment shutoff valve not fully open 4. Thermocouple

5. Gas regulator setting is not correct 1. Control knob not fully pressed in 2. Control knob not pressed in long enough 3. Equipment shutoff valve not fully open 4.