Pressure loss calculation with hydrogen up to 1000 bar

When refuelling with hydrogen at pressures up to 900 bar, problems occur at flow rates above several 100m/s. The resulting pressure losses in some cases are of the order of several 100 bar. This not only causes considerable temperature changes in the gas through the Joule-Thomson effect but also exerts a massive mechanical load on the components.

For this reason knowledge and optimisation of the pressure drop is essential. The difficulty in the calculation of this pressure loss lies in the real gas behaviour of hydrogen at very high pressures and low temperatures. At the same time much experience in the correct choice of pressure loss coefficients is called for.

Our engineers have already calculated hundreds of cases, of which many have also been validated experimentally. Thus we not only have an appropriate basic program, capable of calculating the material data correctly up to 1000 bar, but also the necessary experience to solve your problem fast and reliably. Pressure loss coefficients can be determined experimentally by partner laboratories where required or obtained from the literature (e.g. I. E. Idelchik, M. O. Steinberg: Handbook of Hydraulic Resistance).

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