TY - JOUR
T1 - A Novel Design of Liquefied Natural Gas (LNG) Regasification Power Plant Integrated with Cryogenic Energy Storage System
AU - Park, Jinwoo
AU - Lee, Inkyu
AU - Moon, Il
N1 - Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/2/8
Y1 - 2017/2/8
N2 - Natural gas is transported in its liquid state over long distances and thus must be gasified before use. This study focused on the alternative use of cold energy in an LNG regasification power plant integrated with a cryogenic energy storage (LPCES) system that supports variation over time. Energy demands change over time; these dynamics must be considered to improve overall energy efficiency. During off-peak times, the LNG cold energy is stored in the cryogenic energy storage (CES) system. In contrast, during on-peak times, the stored cryogenic energy is released as electricity to meet higher energy demands. To evaluate the efficiency of the proposed LPCES system, the total power used in the CES system was optimized and a thermodynamic analysis was conducted. In addition, a case study was performed to investigate the effect of the LPCES system with respect to an hourly reserve margin. The results indicated a 95.2% round-trip efficiency for the proposed LPCES system, which is higher than the efficiencies (up to 75%) offered by existing bulk power management systems using hydropower and compressed air. (Figure Presented).
AB - Natural gas is transported in its liquid state over long distances and thus must be gasified before use. This study focused on the alternative use of cold energy in an LNG regasification power plant integrated with a cryogenic energy storage (LPCES) system that supports variation over time. Energy demands change over time; these dynamics must be considered to improve overall energy efficiency. During off-peak times, the LNG cold energy is stored in the cryogenic energy storage (CES) system. In contrast, during on-peak times, the stored cryogenic energy is released as electricity to meet higher energy demands. To evaluate the efficiency of the proposed LPCES system, the total power used in the CES system was optimized and a thermodynamic analysis was conducted. In addition, a case study was performed to investigate the effect of the LPCES system with respect to an hourly reserve margin. The results indicated a 95.2% round-trip efficiency for the proposed LPCES system, which is higher than the efficiencies (up to 75%) offered by existing bulk power management systems using hydropower and compressed air. (Figure Presented).
UR - https://www.scopus.com/pages/publications/85013036615
U2 - 10.1021/acs.iecr.6b04157
DO - 10.1021/acs.iecr.6b04157
M3 - Article
AN - SCOPUS:85013036615
SN - 0888-5885
VL - 56
SP - 1288
EP - 1296
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 5
ER -
