PipeFlowCalculations.com added several new flow calculators to its website. These calculators are highlighted below with links to use them.

1. Nozzle and Venturi nozzle calculator – www.pipeflowcalculations.com/nozzle

Nozzles and Venturi nozzles are used for flowrate measurement and calculation based on the pressure drop between the upstream side and the throat of nozzle. Flowrate can be calculated from measured value of pressure drop and from the knowledge of flowing fluid characteristics.

Nozzles and Venturi nozzles are devices that are inserted in circular cross-section conduit to create pressure difference of static pressure. Based on that pressure difference, flowrate of flowing fluid can be calculated.

Three types of nozzles are covered in calculator: ISA 1932 nozzle, long-radius nozzle, and Venturi nozzle. All three types differ from each other based on shape. All nozzles have radius-shaped convergent inlet with cylindrical throat. The Venturi nozzle also has a divergent part as the outlet.

Nozzle and Venturi nozzle calculator can be used for both liquids and gases. The calculator is applicable for subsonic flow and single-phase fluid. Gas is considered as compressible and ideal. For gas flow, pressure ratio p2/p1 must be equal or greater than 0.75. The calculator is not for pulsating flow.

2. Orifice plate and Venturi tube redesigned calculator – www.pipeflowcalculations.com/orifice

The orifice plate and classical Venturi tube calculator have been redesigned to better comply with ISO 5167:2003.

All three calculators for fluid flow measurement by means of pressure differential devices inserted in circular cross-section conduits running full – Orifice plates, nozzles and Venturi nozzles, and classical Venturi tubes are now in compliance with ISO 5167:2003.

Limits of use according to ISO 5167 are now applied and calculators can be used for compressible flow also.

3. Pipe pressure drop redesigned calculator – www.pipeflowcalculations.com/pressuredrop

The pipe pressure drop calculator has been updated to support rectangle-shaped channels as well as circular pipes.

4. Gas control valves and pressure regulators sizing calculator – www.pipeflowcalculations.com/gascontrolvalve

With the gas control valve and gas pressure regulator sizing calculator, users can calculate flow coefficient Cg and Kg and choose correct valve from manufacturer”s flow table. Also, for known flow coefficient Cg or Kg, users can calculate the maximum capacity of control valve or pressure regulator for given upstream and downstream pressure.