Work

Effects of low-temperature on burst pressure of PTFE membranes and the subsequent hydrogen vent deflagration dynamics

Year: 2026

Type: article

Abstract: Low temperature affects both hydrogen combustion and membrane burst pressure, thereby altering vented-deflagration dynamics. To investigate these effects, PTFE membrane burst experiments were conducted at different temperatures and thicknesses to establish a burst-pressure model, which was incorporated into a validated SAS–TF framework to analyze flame propagation and pressure evolution of premixed hydrogen–air mixtures from 200 to 300 K. Under constant burst pressure, the peak overpressure at 200 K is 29 % higher than that at 300 K, while the maximum flame speed increases by less than 10 %. When temperature-dependent burst pressure is considered, the peak overpressure increases by more than 50 % and the maximum flame speed by over 30 %. Using the ambient-temperature burst pressure at 200 K would underestimate the flame speed and overpressure. These results show that flame acceleration is more strongly associated with burst pressure, whereas overpressure is influenced by both temperature and burst pressure.

Source: International Journal of Hydrogen Energy

DOI: 10.1016/j.ijhydene.2026.158074

Authors: Tianhao Cao, Xiangyu Shao, Haitao Wang, Ligang Zheng, Jianliang Gao

Institution: Henan Polytechnic University

Language: English

Topic: Combustion and Detonation Processes

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,730

Funders: China Postdoctoral Science Foundation, Natural Science Foundation of Henan Province, State Key Laboratory of Technologies in Space Cryogenic Propellants