Pipe flow calculation

Pipe flow calculation web site offers several fluid flow calculators for flow problems solving. Here you can find calculators for pressure drop calculation, flow in Venturi tube, flow through an orifice, Reynolds number calculation, pressure drop in natural gas line and more... Here is the list of currently available pipe flow calculators which you can find on this site:

1. PRESSURE DROP CALCULATOR

This calculator can be used for pressure drop calculation for laminar and turbulent flow. You can calculate pressure drop or flow rate through a pipe including friction losses and local resistance pressure drop calculation, based on Bernoully equation.

2. PIPE DIAMETER CALCULATOR

This calculator can be used for pipe diameter calculation when flow rate and velocity are known or you can calculate velocity for known flow rate and pipe diameter. Also, conversion between volumetric flow rate and mass flow rate can be calculated. If the flowing fluid is gas and if it is considered as ideal, you can calculate volumetric flow rate at different pressures and temperatures, for constant mass flow rate.

3. CONTROL VALVE SIZING CALCULATOR

Correct control valve sizing is very important. Too small valve size will not pass the required flow. An oversized valve is more expensive and may couse instability and other problems. With this calculator you can calculate flow coefficient and select the proper flow control valve size. Many manufacturers are providing flow coefficient as the key parameter for flow control valve selection. Also, for given flow coefficient you can calculate the maximum flow of control valve for given pressure drop.

4. VENTURI TUBE CALCULATOR

For known Venturi tube diameters and measured pressures on the Venturi tube inlet and throat, you can calculate velocities, volumetric and mass flow rate through the Venturi tube.

5. ORIFICE CALCULATOR

Orifice plate is used for flow rate measuring in pipe systems. With orifice plate, pressure drop is created. Based on the magnitude of pressure drop, flow rate can be calculated. This instrument is very practical for large tube diameters and for dirty fluid when turbines are not applicable.

6. REYNOLDS NUMBER CALCULATOR

Input either volumetric, mass flow rate or velocity, dynamic or kinematic viscosity, fluid density, pipe diameter and calculate Reynolds number and determine if flow is laminar or turbulent.

7. COMPRESSIBLE AIR FLOW CALCULATOR

Air is very frequently used fluid for many applications in the industry. Air flow calculator can be applied for air flow through round pipe. Pressure drop or flow rate can be calculated, as temperature is considered to be constant.

8. NATURAL GAS PRESSURE DROP CALCULATOR

This calculator can be used for compressible flow in natural gas pipe lines where pressure is over 1 bar. It is the case in medium and high pressure natural gas pipe networks. Pressure drop or flow rate can be calculated. Input flow rate in standard conditions and calculate pressure drop, or input pressure difference in two positions and calculate flow rate at standard conditions. Calculate real natural gas flow rate, velocities and pressure drop.

9. LPG FLOW CALCULATOR

This calculator can be used for calculation of flow rate and heat power in liquified petroleum gas (propane-butane) pipe lines. Liquified petroleum gas is mixture of propane, butane and other components. This calculator is applicable for calculation of flow rate of gas and liquid phase and lpg heat power calculation (heat power is generated in gas furnaces). Calculator also can be used for calculation of clear propane or clear butane gas flow.

10. THERMAL ENERGY CALCULATOR

Thermal energy calculator can be used for both industrial space heating and cooling systems. Calculate thermal energy - power for heating or cooling, or calculate flow rate of fluid that is heated or cooled. Applicable for hot watter boilers, heat exchangers, radiators, watter chillers, air heaters, and other similar devices. Use it for calculation of hot watter production in boilers, or thermal energy - power needed for industrial space heating the specified flow rate of watter or some other fluid. Or, use it for heat exchanger dimensioning and flow rate calculation or energy exchage rate calculation in heat exchanger. It can be used for chilled watter production calculation when power of refrigiration is known, or it can calculate hot air production if input power is known, and probably many other applications.

11. PRANDTL PROBE - PITOT TUBE

Prandtl probe is one of the most frequently used instruments for velocity, and also flow rate measuring. It is based on measuring pressure difference between total pressure and static pressure of fluid in a particular point of fluid field. Also, you can use this calculator for Pitot tube as well. To remaind, Pitot tube is used for measuring of total pressure only. Static pressure has to be measured by some other instrument. Then the difference in pressures (total and static) is giving the dynamic pressure, which is used to calculate the velocity.