Determining Valve Size for Natural Gas: V250 Rotary Ball Valve Calculation

  • Thread starter Thread starter gillmitch92
  • Start date Start date
  • Tags Tags
    Valve
Click For Summary
Calculating the valve size for a V250 rotary ball valve involves understanding the required volumetric flow rate of natural gas, which is 2.8 million liters per minute at standard temperature and pressure (STP). The density of natural gas at STP is 0.752 kg/m3, and the specific heat ratio is 1.31. The inlet and outlet pressures are 20 bar gauge and 6 bar gauge, respectively, with an inlet temperature of 20 °C. The initial step in the calculation is to determine the ratio between the volumetric flow rate and the gas density. Proper calculations are crucial for ensuring effective valve sizing and performance.
gillmitch92
Messages
7
Reaction score
0
I am struggling with calculating the valve size from a V250 rotary ball valve by Fisher Controls International. The below table states that natural gas is running through the vavle and the following properties apply:Natural Gas

Required volumetric flow rate [@ STP] 2.8 x 106 litre per minute
Density [@ STP] 0.752 kg per m3
Specific heat ratio 1.31
Inlet pressure 20 bar gauge
Outlet pressure 6 bar gauge
Inlet Temperature 20 °C

Would I be right in thinking that I need to find the ratio between the required volumetric flow rate and the density of the valve first?
 
Engineering news on Phys.org
http://www.forberg.com/pdf/techSup/Home_Tech%20Support_Valve%20Flow_calc_and_sizing.pdf
 
  • Like
Likes gillmitch92
Dr. Courtney said:
http://www.forberg.com/pdf/techSup/Home_Tech%20Support_Valve%20Flow_calc_and_sizing.pdf

Thank you very much for the link - I'll take a look @ it.
 

Thread 'UV filter for home central heating?'

Had my central air system checked when it sortta wasn't working. I guess I hadn't replaced the filter. Guy suggested I might want to get a UV filter accessory. He said it would "kill bugs and particulates". I know UV can kill the former, not sure how he thinks it's gonna murder the latter. Now I'm finding out there's more than one type of UV filter: one for the air flow and one for the coil. He was suggesting we might get one for the air flow, but now we'll have to change the bulb...
View full post »

Similar threads

Selecting a Valve for Natural Gas Flow
  • · Replies 1 ·
Replies
1
Views
3K
Engineering Calculate valve sizing to regulate the flow of natural gas
  • · Replies 1 ·
Replies
1
Views
2K
Calculating Valve Size With a Hydraulic Accumulator
  • · Replies 8 ·
Replies
8
Views
3K
Calculate the flow coefficient and pressure drop through valve?
  • · Replies 3 ·
Replies
3
Views
5K
Engineering Calculating valve sizes for a compressible liquid
  • · Replies 4 ·
Replies
4
Views
2K
How Do You Calculate Choked Flow of Propane Based on Natural Gas Parameters?
  • · Replies 2 ·
Replies
2
Views
3K
Calculating Choked Flow of Propane Through a Valve
  • · Replies 10 ·
Replies
10
Views
3K
Time to empty gas cylinder (problem worked, but would like feedback)
  • · Replies 7 ·
Replies
7
Views
4K
Volumetric flow rate ratio calculation
  • · Replies 1 ·
Replies
1
Views
3K
Calculating Pressure Loss in Compressible Fluid Flow: A Case Study
  • · Replies 9 ·
Replies
9
Views
4K