储能科学与技术 ›› 2023, Vol. 12 ›› Issue (12): 3730-3739.doi: 10.19799/j.cnki.2095-4239.2023.0536

• 复合储热专辑 • 上一篇    下一篇

基于流态冰浆蓄冷的深远海风电就地消纳

黎福超1,2(), 陈明彪1,2, 杜群1,2, 陈永珍1,2, 宋文吉1,2(), 林文野1,2, 冯自平1,2   

  1. 1.中国科学院广州能源研究所
    2.中国科学技术大学能源科学与技术学院，广东 广州 510640
  • 收稿日期:2023-08-09 修回日期:2023-09-06 出版日期:2023-12-05 发布日期:2023-12-09
  • 通讯作者: 宋文吉 E-mail:lifc@mail.ustc.edu.cn;songwj@ms.giec.ac.cn
  • 作者简介:黎福超（2000—），男，硕士研究生，研究方向为海上可再生能源，E-mail：lifc@mail.ustc.edu.cn；
  • 基金资助:
    国家重点研发计划项目(2021YFE0112500)

Research on in-situ remote offshore wind-power consumption based on ice-slurry cold storage

Fuchao LI1,2(), Mingbiao CHEN1,2, Qun DU1,2, Yongzhen CHEN1,2, Wenji SONG1,2(), Wenye LIN1,2, Ziping FENG1,2   

  1. 1.Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences
    2.School of Energy Science and Engineering, University of Science and Technology of China, Guangzhou 510640, Guangdong, China
  • Received:2023-08-09 Revised:2023-09-06 Online:2023-12-05 Published:2023-12-09
  • Contact: Wenji SONG E-mail:lifc@mail.ustc.edu.cn;songwj@ms.giec.ac.cn

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摘要：

考虑深远海风电远距离输电带来的高成本与限制性，提出了一种以冰浆作为蓄冷载体的就地消纳深远海风电的技术路线，以南海某台风力发电机为研究对象，建立了性能与经济性评价模型，对循环COP、制冰速度、单位电耗、费用年值、单位制冰费用进行分析。并与船载场景下的制冰机相对比。结果表明：风电消纳制冰浆机组在海面下取水并补充淡水制冰的情景下制冰速度可达57.18 t/h，单位电耗39.47 kWh/t，较同功率下海水片冰机制冰速度提升80.4%，单位电耗降低51.1%，产能大能效高；储冰罐全年冷量损失比率不超过制冷量的2.7%，综合各项冷量损失，全年冷量损失比率不超过5%，且几乎不随海水流速变化波动，隔热能力优秀；计入冷量损失，机组全年冰产量达95.17万吨，可冷藏至少47.59万吨海产品，供应1100艘以上千吨级渔船使用，能够满足大规模的冰需求；机组费用年值为1758.70万元，制取单位冰浆费用低至36.96元/吨，较船载场景下海水片冰机减少47.3%，具有较强竞争力，经济可行性良好。

关键词: 风电消纳, 制冰, 蓄冷, 冰浆, 经济性分析

Abstract:

Considering the high cost and limitations of long-distance offshore wind-power transmission in far-reaching sea, a technical route is proposed herein using ice slurry as a cold storage medium for wind-power elimination in remote offshore spots. Considering a single wind-driven generator in the South China Sea as the research object, performance and economic evaluation models were developed to analyze the cycle coefficient of performance, ice-making speed, unit power consumption, annual cost, and unit ice-making cost. The generator unit was also compared with ice-making machines in shipboard scenarios. The results showed that in the case of water extraction from below the sea surface and replenishing freshwater for ice making, the ice-making speed of the ice-slurry generator unit based on wind power reached 57.18 t/h and the unit power consumption was 39.47 kWh/t. Compared with seawater flake ice-making machines operating at the same power, the ice-making speed was increased by 80.4% and the unit power consumption was reduced by 51.1%. The unit exhibited high production capacity and energy efficiency; the ratio of annual cooling capacity loss from the ice storage tank did not exceed 2.7% of the refrigeration capacity, and it did not exceed 5% when all cooling capacity losses were combined. Moreover, it remained almost unaffected by changes in the seawater flow velocity. The insulation capability of the unit was also excellent. Considering the cooling capacity loss, the annual ice production of the unit reached 951700 tons, which can refrigerate at least 475850 tons of seafood and supply ice to more than 1100 1000-ton fishing ships, indicating that it could meet large-scale ice requirements. The unit's annual cost was 17587000 CNY, and the cost of producing ice slurry was as low as 36.96 CNY per ton, which was 47.3% less than that of a seawater flake ice-making machine in a shipboard scenario. These findings indicate the strong competitiveness and good economic feasibility of the unit.

Key words: wind power consumption, ice making, cold storage, ice slurry, economic analysis

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