A High Precision Laser-based Mobile SEnsor for Detection of Trace Amounts of Hydrogen

氢是一种领先的零排放燃料，因此应用肯定会增加。例如，天然气、钢铁和汽车等行业正在慢慢采用绿色氢气技术。这种对化石能源的转变为快速、移动和灵敏的氢传感器创造了一个独特的市场空间。因此，本项目的目标是开发一种基于快速灵敏的光学测量技术--可调谐二极管激光吸收光谱(TDLAS)的痕量氢气传感器。与传统的传感器模式相比，基于激光的气体传感器将具有更高的速度、灵敏度和选择性。初始检测下限的目标是0.02vol%，这与现有技术的状态是一致的。一个由光学气体传感专家组成的联盟在利益相关者的协助下，如英国网络-H2倡议，使该项目具有独特性。气体传感器的一个关键部件将与Eblana Photonics Ltd(都柏林)合作开发，基于他们的离散模式平台，这是一种低成本、可扩展的技术。将与瑞士的IRSweep合作开发一种新型的轻量级多程气室。作为最轻的气体分子，H2在采样方面提出了一些挑战，因此，提出了一种使用附加光学气体成像(OGI)技术的双模式方法来确定最佳采样条件。将在氢气设施进行空中测量活动，并将与我们的工业合作伙伴进行进一步的开发和商业化。

Hydrogen is a leading zero-emission fuel and hence applications are bound to increase. For example, industries such as the natural gas, steel and automotive are slowly adopting green hydrogen technologies. This shift away from the fossil-based energy sources creates a distinctive market space for hydrogen sensors that are rapid, mobile and sensitive. Thus, the aim of the project is to develop a trace gas sensor for H2 based on a fast and sensitive optical measurement technique - tunable diode laser absorption spectroscopy (TDLAS). Laser based gas sensors will have improved speed, sensitivity and selectivity compared to conventional sensor paradigms. An initial detection limit of 0.02 vol% has been targeted which is consistent with the state of the art. A consortium of optical gas sensing experts assisted by stakeholders such as the UK Network-H2 initiative, give the project its uniqueness. A key component of the gas sensor will be developed in coillaboration with Eblana Photonics Ltd (Dublin), based on their discrete mode platform which is a low-cost, scalable technology. A novel-lightweight multipass gas cell will be developed in collaboration with IRsweep (Switzerland). Being the lightest gas molecule, H2 poses several challenges in sampling and, hence, a dual modal approach using an additional optical gas imaging (OGI) technique is proposed to identify optimal sampling conditions. An aerial measurement campaign will be conducted at a hydrogen gas facility and further development and commercialisation will be undertaken with our industrial partners.