Combustion characterization of hybrid methane-hydrogen gas in domestic swirl stoves. (1st February 2023)

• Record Type: Journal Article
• Authors: Liu, Xiaozhou; Zhu, Guangyu; Asim, Taimoor; Mishra, Rakesh
• Is Part Of: Fuel. Volume 333(2023)Part 2
• Publication Date: 2023-02-01
• Subjects: Swirl gas stoves -- Hybrid methane-hydrogen mixture -- Hot-state tests -- Numerical simulations -- CO emission; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2022.126413
• Languages: English
• ISSNs: 0016-2361

Abstract

Graphical abstract: Highlights: Development of a simplified chemical reaction model for methane-hydrogen combustion. Simplified model tested numerically and validated using methane combustion hot test. Parametric combustion investigations on the concentration of hydrogen in methane. Demonstration of reduced CO production from hybrid methane-hydrogen combustion. Establishing optimal hydrogen concentration for use in domestic swirl gas stoves. Abstract: Combustion of hybrid natural gas (methane) and hydrogen mixture in domestic swirl stoves has been characterized using hot-state experiments and numerical analysis. The detailed combustion mechanism of methane and hydrogen (GRI-Mech 3.0) has been simplified to obtain reduced number of chemical reactions involved (82 % reduction). The novel simplified combustion mechanism developed has been used to obtain combustion characteristics of hybrid methane-hydrogen mixture. The difference between the calculations from the detailed and the simplified mechanisms has been found to be <1 %. A numerical model, based on the simplified combustion model, is developed, rigorously tested and validated against hot-state tests. The results depict that the maximum difference in combustion zone's average temperature is <13 %. The investigations have then been extended to hybrid methane-hydrogen mixtures with varying volume fraction of hydrogen. The results show that for a mixture containing 15 % hydrogen, the release of CO due to combustion reduces by 25 %, while the combustion zone's average temperature reduces by 6.7 %. The numerical results and hot-state tests both confirm that the temperature remains stable when hybrid methane-hydrogen mixture is used in domestic swirl gas stoves, demonstrating its effectiveness in cooking processes.