Experimental study on leakage temperature field of hydrogen blending into natural gas buried pipeline

Jianlu Zhu, Sailei Wang, Jun Pan, Hao Lv, Yixiang Zhang, Hui Han, Cuiwei Liu, Zhili Duo and Yuxing Li

Applied Energy, 2024, vol. 359, issue C, No S0306261924000394

Abstract: Hydrogen blending into natural gas is a feasible approach to realize the low-carbon energy structure. The impact of the hydrogen blending ratio on the leakage characteristics of buried gas pipelines determines the safety of pipeline operations. In this study, we investigated the influence of the hydrogen blending ratio on the soil temperature field after the buried gas pipeline leak and the detection range of fiber optic sensors through a field test and numerical simulation. A critical flow model based on the Peng-Robinson (PR) equation and a soil diffusion model based on simplified throttling were established for the microleakage and diffusion stages of the buried pipeline. Furthermore, the soil temperature variation after the buried pipeline leak and the prediction model of cooling capacity caused by gas leakage were obtained. In addition, the leakage experiments were performed to evaluate the impact of hydrogen blending ratio, pipeline operation pressure, and leak direction, as well as to achieve the soil temperature field distribution near the leak point. The following conclusions can be drawn: (1) Soil temperature decreases as the hydrogen blending ratio increases; (2) The detection range of the fiber optic sensors increases as the hydrogen blending ratio increases, ensuring the applicability of the existing fiber optic detection system for detecting hydrogen blending pipeline leaks. The findings provide a valuable research topic for hydrogen pipeline leak detection.

Keywords: Hydrogen blending into natural gas; Buried pipeline leakage; Soil temperature distribution; fiber optic detection (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261924000394
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:359:y:2024:i:c:s0306261924000394

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2024.122656

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().