Pressure drop calculators
Calculator's features:
- Calculate pressure drop for known flow rate
- Calculate flow rate for known pressure drop
- Darcy formula for friction coefficient calculation
- Colebrook-White formula for turbulent flow calculation
- Flow in valves and fittings
- Laminar and turbulent flow
- Flow velocity/diameter calculation
Pressure Drop
For incompressible fluids
- Liquids and low-pressure gases
- Circular or rectangular pipes
- Incompressible flow (ρ = const)
- Colebrook-White equation
Gas Pressure Drop Calculator
For any perfect gas flow
- Applicable for any perfect gas in a long and closed round pipe
- Compressible ρ ≠ const.
- Isothermal T=const.
Compressible air flow
Flow rate of air flow calculations
- Flow of air in a closed round pipe
- Compressible flow ρ ≠ const.
- Isothermal flow T=const.
High pressure natural gas
Flow rate calculations of natural gas
- Applicable for natural gas lines over 1 bar, longer than 1 m
- Calculations available based on the Van der Waals method and
- Redlich-Kwong method
Calculators for pressure differential devices
Calculator's features:
- Calculate flow rate in pipe based on the created pressure drop,
- For liquids and perfect gases,
- Flow velocity calculation,
- Convert between volume and mass flow rate,
- Reynolds number calculation,
- Discharge coefficient calculation.
Venturi tube
Venturi effect calculation
- Quickly calculate the actual flow rate through the Venturi tube
- Flow rate calculation from the measured pressure difference caused by the flow contraction
Orifice plate calculator
Calculate orifice diameters
- Quickly calculate the actual flow rate through the orifice
- Flow rate calculation from the measured pressure drop caused by the orifice plate inserted in the pipeline
Nozzle and Venturi nozzle
Nozzle calculation
- Calculate flow rate using the static pressure difference between inlet pressure and pressure in the nozzle throat
- The calculation is according to ISO 5167-3
Prandtl probe - Pitot tube
Calculate flow velocity
- Calculate flow velocity by measuring a difference between stagnation pressure and static pressure in a single point of a flow streamline
- Applicable for airflow in rectangular and round ducts
Easy calculators for quick calculations
Pipe diameter calculator
Calculate flow velocity
- Quick pipe diameter calculation in closed, round, rectangular pipes and ducts
- Enter flow rate and velocity in text fields in the calculator and click calculate button to get results
Resistance coefficient K
Flow in valves and fittings
- Resistance coefficient (or resistance factor) K calculation for flow through valves and fittings
- Should be used with pressure drop calculator or with gas compressible flow calculator
Reynolds number
Laminar or turbulent flow
- Analyze what makes fluid flow regime laminar and what is needed to force the fluid to flow in the turbulent regime
- Calculator for all fluids and flow rates without any restriction
Thermal energy
Calculate heat energy, thermal power and flow rate
- Calculator for heat power calculation, and the flow rate calculation
- Suitable for hot water boilers, water and air heat exchangers, chillers, heaters, and other equipment
Gas offtake
Calculate offtake of gas
- Calculation of gas outflow from the pipe or through the valve to the atmosphere or to a reservoir
- Calculate the maximum flow rate when you know pressure difference and pipe diameter
LPG flow
Calculate heat power and flow rate of LPG
- Calculate flow rate, pipe diameter and heat power of liquefied petroleum gas – LPG
- Determine flow rate of an LPG in a gas furnace, for burner heat power
Control valve sizing calculator
Calculate flow coefficient
- Calculate maximum flow rate through valve for pressure drop and flow coefficient Cv
- Compare control valves from different manufacturers
Gas control valve sizing calculator
Calculate flow coefficient
- Calculate valve capacity for given upstream and downstream pressure and known Cg or Kg
- The calculator is in line with the standard EN334
Pump performance calculator
Calculate pipe flow rate and head
- Calculate the actual flow and required head of the pump (or ventilator)
- Calculate variable pump speed for known flow rate and head
Pipe wall thickness calculator
Calculation of pipe wall size
- calculate the thickness of the pipe wall based on the known value of the internal pressure and the permitted specified minimum yield stress in the pipe
- Based on the ASME B31.8 standard
- Calculation of actual stress in the pipe
- Checking the thickness of the pipe wall for the known value of the permissible stress
- Carbon steel, stainless steel, copper and PVC pipes.