A Numerical Simulation Study on the Combustion of Natural Gas Mixed with Hydrogen in a Partially Premixed Gas Water Heater

Siqi Li, Xiaoling Li (), Hanlin Jin, Yi Liu and Yuguo Wu
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Siqi Li: College of Petroleum Engineering, Liaoning Petrochemical University, Fushun 113001, China
Xiaoling Li: College of Petroleum Engineering, Liaoning Petrochemical University, Fushun 113001, China
Hanlin Jin: College of Petroleum Engineering, Liaoning Petrochemical University, Fushun 113001, China
Yi Liu: College of Petroleum Engineering, Liaoning Petrochemical University, Fushun 113001, China
Yuguo Wu: College of Petroleum Engineering, Liaoning Petrochemical University, Fushun 113001, China

Energies, 2024, vol. 17, issue 16, 1-22

Abstract: To investigate the impact of blending natural gas with hydrogen on the combustion performance of partially premixed gas water heaters, a framelet-generated manifold (FGM) was employed for lower-order simulation of combustion processes. Coupled with the 30-step methane combustion mechanism simplified by GRI3.0, a three-dimensional computational fluid dynamics (CFD) simulation of the combustion chamber of a partially premixed gas water heater was carried out. A numerical simulation was performed to analyze the combustion process of a mixture including 0–40% natural gas and hydrogen in the combustion chamber of a partially premixed gas water heater. The results indicate that the appropriate hydrogen blending ratio for some premixed gas water heaters should be less than 20%. Furthermore, it was observed that after blending hydrogen, there was a significant increase in the combustion temperature of the water heater. Additionally, there was a slight increase in NOx.

Keywords: partial premixed gas water heater; hydrogen energy; blending natural gas; adaptability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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