Hyfindr Tech Talk # 1- Instrumentation in Hydrogen Refueling Stations explained

Hydrogen Refueling Stations

In this video, Steven Oji (Hyfindr) and Christian Wirl (WIKA) discuss the engineering measurement technology that is used in hydrogen refueling stations. Christian has brought along several devices, including a gauge, electronic pressure sensors, a temperature sensor, and a valve, to demonstrate their use and explain their importance in the hydrogen refueling process.

Learn about Hydrogen Refueling Stations an related Mesurement, Sensors and Instrumentation

Christian explains that these devices are often used in hydrogen refueling stations to measure pressure, temperature, and flow rates of hydrogen gas. Pressure indicators and transmitters are used at various stages of the process, such as at the inlet of a compressor or at storage tanks, to ensure that the hydrogen is being handled and stored safely and efficiently. The temperature of the hydrogen gas is also an important factor to consider, as it can affect the pressure and the overall performance of the system.

In addition to these measurement devices, Christian also discusses the use of manual valves in the hydrogen refueling process. These valves are used as shut-off devices in the system to manually open and close the hydrogen flow, for example in case of maintenance.

Christian reveals that the gauge he has brought along contains Swiss Movement technology, which is used to transfer the movement of the bourdon tube and measure pressure within the system. The bourdon tube and all parts in contact with hydrogen consist of 316L steel and are manufactured to ensure maximum tightness.

In this video, Christian discusses the importance of temperature control in the hydrogen economy. He explains that hydrogen gas warms up when it expands. It is important to keep the temperature of the gas below 85 degrees when filling a vehicle with hydrogen. To do this, the gas is typically cooled to around -40 degrees before it is dispensed.

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Christian also discusses the use of temperature sensors and transmitters in the hydrogen refueling process, which are used to measure the temperature of the gas and transmit this information to the control system. Temperature as well as pressure sensors and transmitters must be explosion-proof and made of materials that can withstand high pressures, such as 316L Steel (1.4404). The sensitivity and precision of these sensors is also an important consideration, as misreading in temperature can have significant effects on the overall performance of the system.

To illustrate the high-pressure conditions that can be found in the hydrogen economy, Christian demonstrates a high-pressure temperature sensor that can withstand pressures of up to 1050 bar. This is especially an important consideration in hydrogen mobility and its infrastructure, with fuel tank pressures in vehicles up to 700 bar. The durability and reliability of these sensors is crucial to ensure the safe handling and distribution of hydrogen gas.

Summary: The video provides a thorough overview of the engineering technology that is used in the hydrogen refueling stations. It highlights the importance of accurate measurement and control in the hydrogen refueling process and the role that devices like gauges, pressure and temperature sensors, and valves play in ensuring the safe and efficient handling of hydrogen gas. It provides a detailed overview of the importance of temperature control in the hydrogen economy. It highlights the role of temperature sensors and transmitters in the hydrogen refueling process and the challenges and considerations involved in choosing the right sensors for the task. Engineers and anyone interested in the hydrogen economy will likely find this video informative and educational.

If you like the video, please also subscribe to our new Hyfindr Youtube Channel. We will launch Hyfindr Tech Talks in January – a new format that is specifically designed for engineers who are interesed in the hydrogen economy!

Steven is a fuel cell system designer and he will deep-dive into the technology that makes the hydrogen economy work with real experts. We hope you will like the new format.

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