/// Wasserstofftools ///

Many processes in the hydrogen sector rely on complex calculation methods, as a simplification of hydrogen as an ideal gas should be avoided, due to: - the often high operating pressures - the reverse Joule-Thomson effect - the often cryogenic process temperatures - ...

The tools on this website are designed to perform calculations directly online using real data in order to obtain precise results with little effort.

A complete overview of all previous calculation aids and information can be found at „Tools“. If you have any questions or suggestions for improvement, please do not hesitate to contact me at P.Posse@hydrogentools.de .

/// News ///

12/03/2025: Neuer Rechner „Permeations-Koeffizientenumrechner“

18/07/24: Implementierung der englischsprachigen Version einiger Tools

21/04/24: Neuer Beitrag „Heizwert vs Brennwert“

18/03/24: Neuer Beitrag „Zellspannung und Stromstärke bei der Elektrolyse“

26/02/24: Aktualisierung Beitrag „Joule-Thomson-Effekt“ (Ergänzende Erklärungen)




/// Popular Topics ///

This calculator processes the inputs "temperature", "pressure" and "volume" to calculate the mass of a certain amount of hydrogen. The calculation is carried out under real conditions so that exact values can be output even under high pressures.

The reverse Joule-Thomson effect in hydrogen means that the gas heats up instead of cooling down when it is throttled. The calculator linked in the article processes the inputs "starting temperature", "starting pressure" and "final pressure" to calculate the temperature afte throttling.

This article shows how the two energy content values differ from each other and which value should ultimately be used for calculations in electrochemical processes such as in fuel cells.