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Superconductivity-based offshore power-liquid hydrogen co-production and hybrid delivery system: Innovative design and delivery performance evaluation

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  • Yang, Jian
  • Li, Yanzhong
  • Li, Cui

Abstract

The combination of offshore wind and hydrogen production is a promising option to upgrade the flexibility and reduce curtailment or constraint of offshore wind farms (OWFs). In this study, an offshore power-liquid hydrogen (LH2) co-production and hybrid delivery system based on superconducting technologies is designed which enables highly efficient generation, low-loss direct current transmission, and access to LH2. A study is focused on the delivery performance of the proposed novel hybrid energy pipeline with cooled shield and drainage tube. Research results have shown that building a shield cooled by draining a tiny LH2 in the vacuum chamber of the pipeline is an effective measure to reduce heat permeation. Due to the combined utilization of sensible and latent heat of LH2, the delivery distance of the novel pipeline with 0.6 % of LH2 gasification can be increased by 6.6 % compared to a regular pipeline. With the position adjustment of the cooled shield, the delivery distance of the novel pipeline can be increased by up to 13.2 %. Furthermore, the actual LH2 delivery of the hybrid energy pipeline can exceed the design delivery (1.0 kg/s) by about 60 %, avoiding power curtailment of more than 13 % due to the reduced grid acceptance.

Suggested Citation

  • Yang, Jian & Li, Yanzhong & Li, Cui, 2025. "Superconductivity-based offshore power-liquid hydrogen co-production and hybrid delivery system: Innovative design and delivery performance evaluation," Renewable Energy, Elsevier, vol. 248(C).
    • Handle: RePEc:eee:renene:v:248:y:2025:i:c:s0960148125006974
    DOI: 10.1016/j.renene.2025.123035
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