The Hydrogen Detection System of the Hydrogen Refueling Station Must Be Integrated and Multifunctional

The hydrogen detection system of a hydrogen refueling station must not only have a hydrogen sensor with excellent performance but also the ability to integrate the system. A typical system can detect ppm and LEL. Whether hydrogen gas ignited in the air will detonate and how long it will last is determined by the concentration of hydrogen in the air. If the hydrogen concentration is too low, there is not enough fuel to sustain the explosion; If the concentration of hydrogen is too high, there is not enough oxygen to burn. Hydrogen gas can only be detonated between two concentrations, which is called the lower explosion limit (LEL) and the upper explosion limit (UEL), which is the explosion limit index of the two hydrogen gases.

In addition, it is necessary to have the ability to detect gas at multiple points, and sensors can be selected according to the installation location and application. In the event of a power outage, backup power can still be continuously monitored for long periods. When a hydrogen leak is detected, it can be notified by voice of the exact location of the leak and the information of abnormal signals. In seismic zone areas, it is required to design with seismic resistance in mind.

The development of hydrogen sensing systems is not new. It has been used in industry for many years. However, the rigidity of the industry model limits the creation of new technologies. When the popularization of hydrogen energy requires more sound infrastructure, the performance of the hydrogen sensing system needs to be improved, and experience in its application needs to be accumulated and continuously enhanced to ensure complete safety.

Reference:

• Energy Platform News, 2023-10-25, Jeong Sang-Pil, Hydrogen Leaks at 88% of Hydrogen Charging Stations, Alarms Not Working in Time
• Hydrogne Energy Navi, 水素ステーションの仕組み
• Charming Scitech, 2024-03-09, Yuman Kuo, Is it safe to transport and store hydrogen? Please take a look at hydrogen and its transportation and receiving facilities to dispel dangerous myths