This chapter provides an overview of H2 ignition and safety-related questions, to be addressed in the development of future H2 thermal engines. Basics of H2 ignition phenomena are covered in the first part, including the well-known branched-chain oxidation reactions described by Semenov & Hinshelwood, as well as useful analytical derivations of induction delay times. The second part provides an overview of classical canonical limit problems, including the explosion-limit (p,T) diagram, the propagation limits of both deflagrations and detonations, and shock-induced or thermal-induced ignitions. The two remaining parts address two opposite but complementary questions: how to ignite a H2 engine, and how to prevent hazardous H2 ignition. In the former, a list of available technologies is offered, while in the latter, simplified models are presented to predict ignition hazards from cold-flow numerical simulations.
Hydrogen ignition and safety chapter now ready
02 August 2022 by PierreThe chapter, to appear in "Hydrogen for future thermal engines" is now ready.
15 September 2021
by Pierre
15 September 2021
by Pierre
14 April 2021
by Pierre