Design and Energy-Saving Analysis of a New LNG Vaporizer Based on Mg-Based Hydrogen Storage Metal

Wenke Yuan (), Zixuan Yin, Yan Su, Zhangyu Liu, Leyi Bao and Jinyu An ()
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Wenke Yuan: School of Civil Engineering, Guizhou University, Guiyang 550025, China
Zixuan Yin: School of Architecture and Urban Planning, Guizhou University, Guiyang 550025, China
Yan Su: School of Civil Engineering, Guizhou University, Guiyang 550025, China
Zhangyu Liu: School of Civil Engineering, Guizhou University, Guiyang 550025, China
Leyi Bao: School of Economics, Guizhou University, Guiyang 550025, China
Jinyu An: School of Civil Engineering, Guizhou University, Guiyang 550025, China

Energies, 2025, vol. 18, issue 4, 1-18

Abstract: In order to save the large amount of energy consumption associated with traditional water-bath LNG vaporizer, this paper proposes a novel design for a liquefied natural gas (LNG) vaporizer by comprehensively applying the exothermic property of hydrogen storage metals and the high efficiency of solar energy storage devices. In this paper, the working theory of the proposed LNG vaporizer is first addressed; then, a system featuring a new LNG vaporizer with 1312 mm diameter and 4000 mm length is designed, and its feasibility is demonstrated through technical and economic analysis. After comparison, Mg 2 Ni has higher economic benefits as a hydrogen storage metal than Mg. When Mg 2 Ni is used as the hydrogen storage metal, the daily power consumption for vaporizing 1000 m 3 of LNG at night during winter is just 89.78 kW·h, with an energy efficiency of about 50%. Combined with solar energy storage devices, for a northern city in China (about 40° N), the savings in electricity costs could be about $2200 per year.

Keywords: LNG vaporizer; hydrogen storage metals; solar energy applications; energy conservation (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: 2025
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