Open AccessPreliminary design and evaluation of large‐diameter superconducting cable toward GW‐class hybrid energy transfer of electricity, liquefied natural gas, and liquefied nitrogen
Author(s) -
Chen Yu,
Jiang Shan,
Chen Xiao Yuan,
Wang Ya Fang,
Li Tao
Publication year - 2020
Publication title -
energy science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 29
ISSN - 2050-0505
DOI - 10.1002/ese3.634
Subject(s) - liquefied natural gas , natural gas , electricity , heat transfer , liquid nitrogen , capital cost , nuclear engineering , environmental science , petroleum engineering , waste management , engineering , electrical engineering , chemistry , mechanics , physics , organic chemistry
Considering the temperature rises caused by the friction loss and heat leakage, long‐distance and high‐capacity transportation of liquefied natural gas (LNG) is currently not very feasible by using a cryogenic pipeline. As a fire‐proof and pollution‐free liquid, liquefied nitrogen (LN 2 ) is introduced to cool the LNG pipe and high temperature superconducting (HTS) cable simultaneously for exploring a new hybrid energy transfer (HET) concept of the LNG, LN 2 , and electricity. In this new concept, both the LNG pipe and HTS cable are inserted into the same LN 2 pipe, and these two coaxial assemblies are designed to have very large diameters for enhancing the energy transfer capacity. As case studies, two HTS cables rated at 2 kA and 10 kA are structurally optimized by using a particle swarm optimization method. Two performance indicators of required tape length and generated AC loss per meter cable are introduced to evaluate the capital cost and operating cost with thousands of optimized parameters. The results show that this new HET concept has significant potentials to avoid excessive LNG temperature rise and reduce the HTS tape and cooling costs, and thus lays some bases for the use in future power and energy transfer applications.