Search found 57 matches
- Sun Nov 20, 2011 8:51 am
- Forum: Flow calculators and fluid flow problems
- Topic: pump and pipe size
- Replies: 3
- Views: 4999
Re: pump and pipe size
You must tell me pipe diameter, pipe length, elevation difference between street pipe and sprinkler end.
- Thu Nov 17, 2011 6:36 pm
- Forum: Flow calculators and fluid flow problems
- Topic: parallel flow?
- Replies: 1
- Views: 3663
Re: parallel flow?
If you have same inlet collector and same outlet collector for all pipes, than as pressure can be only one in each collector, pressure drop is the same in every pipe of paralell system.
Actual flow rate through each pipe is different based on the each pipe resistance.
Actual flow rate through each pipe is different based on the each pipe resistance.
- Tue Nov 08, 2011 10:46 pm
- Forum: Flow calculators and fluid flow problems
- Topic: FLow rate and pressure in a non-round pipe
- Replies: 2
- Views: 4487
Re: FLow rate and pressure in a non-round pipe
You should use hydraulic diameter Dh=4A/P
A - cross section area
P - wetted perimeter
With Dh you should use Bernoulli equation to calculate pressure drop
A - cross section area
P - wetted perimeter
With Dh you should use Bernoulli equation to calculate pressure drop
- Tue Nov 08, 2011 10:41 pm
- Forum: Flow calculators and fluid flow problems
- Topic: Pressure Drop and flow Simple Flow and Pressure Calculations
- Replies: 5
- Views: 9436
Re: Pressure Drop and flow Simple Flow and Pressure Calculat
You can either use ventilator or increase pipe diameter to reduce pressure drop but it should be checked
- Tue Nov 08, 2011 7:44 am
- Forum: Flow calculators and fluid flow problems
- Topic: Pipe size calculation
- Replies: 4
- Views: 6283
- Thu Oct 20, 2011 7:11 pm
- Forum: Flow calculators and fluid flow problems
- Topic: Gravity Water Flow Calculations
- Replies: 1
- Views: 4020
Re: Gravity Water Flow Calculations
Here is the report that I have using pressure drop calculator Calculation report Pipe pressure drop calculator 1. volume flow rate (q): q : 2058.0613 gpm US 3. pipe length (L): L : 1500 ft 4. pipe diameter (D): D : 7 in 5. pipe roughness (kr): kr : 0.01 mm 6. density (ρ): ρ : 1000 kg/m3 7. kinematic...
- Sat Oct 15, 2011 10:56 am
- Forum: Flow calculators and fluid flow problems
- Topic: Pipe size calculation
- Replies: 4
- Views: 6283
Re: Pipe size calculation
What is the height difference between free water level and pump inlet. If pump is bellow water level, than it is ok to use 3" or even smaller pipe. If pipe is high from water level than it should be checked. Anyway, for 2000 gph velocity is ok for both 4" and 3" pipe (less than 0.5 m/...
- Sat Oct 15, 2011 10:52 am
- Forum: Flow calculators and fluid flow problems
- Topic: negative absolute pressure
- Replies: 2
- Views: 10575
Re: negative absolute pressure
Well you can not have negative absolute pressure, might be your gauge is not accurate for low pressure readings. Your pump might be able to give 148 feet head, actual pump working pressure is just enough to over come all friction losses plus gravity head difference between to tanks level. If both ta...
- Sat Oct 08, 2011 8:09 am
- Forum: Flow calculators and fluid flow problems
- Topic: air flow coefficient through an orifice plate
- Replies: 2
- Views: 5114
Re: air flow coefficient through an orifice plate
Hope orifice plate calculator can help. Use absolute pressures in calculations.
- Sat Oct 08, 2011 8:08 am
- Forum: Flow calculators and fluid flow problems
- Topic: Can flow be calculated in a pipe that has vacuum
- Replies: 3
- Views: 5361
Re: Can flow be calculated in a pipe that has vacuum
That is OK.
Here you can find diameter and flow calculator that can help you in calculations.
Here you can find diameter and flow calculator that can help you in calculations.