Heat storage based mobile LNG emergency supply unit

doi:10.3969/j.issn.2095-4239.2015.04.002

Abstract

Abstract: The use of mobile lng emergency units (MLEU) is an effective method to meet urgent gas supply demand. Current MLEU using ambient air vaporizer (MLEU-AAV) and gas fired water bath vaporizer (MLEU-GFWB) have a poor stability, and the MLEU-GFWB is expensive. This paper introduces a novel mobile LNG emergency unit with a heat storage vaporizer (MLEU-HSV). The working principle, conceptual design and techno-economic evaluation of the MLEU-HSV are outlined. The results show that the specific emergency gasification cost for large and medium-sized MLEU-HSV is comparable to MLEU-AAV, 2.23 yuan/Nm³ and 2.42 yuan/Nm³, respectively. They are about 0.1 yuan/Nm³ lower than that of MLEU-GFWB. The gasification intensity can reach 70 Nm³/(m²·h), comparable to that of MLEU-GFWB. These results suggest that MLEU-HSV be a promising alternative to the current technologies.

Key words: heat storage, LNG, emergency gas supply, conceptual design

CLC Number:

TQ028.8

SUN Chao, FAN Shuanshi, LANG Xuemei, WANG Yanhong. Heat storage based mobile LNG emergency supply unit[J]. Energy Storage Science and Technology, 2015, 4(4): 347-352.

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