7 replies to this topic

[alaasleem2026]

Please for you engineers
I have 45ton vertical tank to store oxygen in liquid phase but not equipped with tonage meter
I try to calc the tonage inside tank
I look forward to any guideline for give approximately solution
Thank you for reading

Edited by alaasleem2026, 22 August 2024 - 06:56 PM.

[breizh]

Hi,
Share a Pid for us to be able to support.

https://www.engineer...ure-d_2082.html
Breizh

[shvet1]

Describe a level meter

[alaasleem2026]

Describe a level meter

I mean any mathematical model to use total pressure of tank, geometry of tank and some losses of vented
To give approximately indication of tonnage

Edited by alaasleem2026, 25 August 2024 - 04:49 PM.

[breizh]

alaasleem2026,

You should have a level transmitter on your storage tank, right?

You should have a Pressure indicator on the top of the ST, right?

You should have a Temperature sensor on the top, right?

You know the total volume of the tank, right?

Basis for calculation:

Mass = Mass liquid +Mass gas 

No losses.

density for gas and liquid at T, P available using NIST web site. Google NIST saturation properties

Volume gas =total volume-volume liquid 

mass gas =volume gas * gas density 

Volume of liquid= section of the tank* height of liquid.

mass of liquid = volume of liquid * density of liquid,

 

I let you the math (simple)- You may want to use an excel sheet to perform the calculation.

Good luck

Breizh

Attached Files

•  alaasleem2026.xlsx   11.67KB   9 downloads

[carlos infante]

I mean any mathematical model to use total pressure of tank, geometry of tank and some losses of vented
To give approximately indication of tonnage

 

It is not possible to do.. Oxygen tank is a liquid-vapor equilibrium, under stable conditions it will keep pressure and temperature.ç

 

Tour company shall provided a leven measurement. Is a safety requirement.

 

Carlos

[breizh]

Hi,

Consider this document to support:

https://files.charti...CS_Rev_B_ws.pdf

Breizh

[alaasleem2026]

alaasleem2026,
You should have a level transmitter on your storage tank, right?
You should have a Pressure indicator on the top of the ST, right?
You should have a Temperature sensor on the top, right?
You know the total volume of the tank, right?
Basis for calculation:
Mass = Mass liquid +Mass gas
No losses.
density for gas and liquid at T, P available using NIST web site. Google NIST saturation properties
Volume gas =total volume-volume liquid
mass gas =volume gas * gas density
Volume of liquid= section of the tank* height of liquid.
mass of liquid = volume of liquid * density of liquid,

I let you the math (simple)- You may want to use an excel sheet to perform the calculation.
Good luck
Breizh

Thank you Breizh i will take steps for that