Thermodynamics of Hydrogen Energy Storage

A: The requirement caps transient metal and gas temperatures from adiabatic heating, while B shifts the risk upstream, C confuses thermal limits with metering accuracy, and D treats an instrumentation artifact as the driver.

A: High-pressure hydrogen diffusion controls embrittlement risk here, whereas B needs aqueous H2S, C needs free water and CO2, and D only activates at elevated temperatures well above service.

A: Temperature stabilization isolates true leakage, while B mixes transient effects, C is qualitative and misplaced at this stage, and D ignores thermodynamic pressure–temperature coupling.

A: The bubble flags pressure normalization, while B misreads a calculation as hardware, C belongs to flow measurement, and D implies an active relief function not shown on P&IDs.