Jiaye Xu, Qichao Zhang, Nina Ye, Zhongxiao Zhang, Xiaojiang Wu, Haojie Fan
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Abstract
The flexible peak shaving capacity of coal-fired power units has a direct impact on the trajectory of renewable energy in China’s evolving energy landscape, and therefore, the achievement of carbon peak and carbon neutrality goals. In this paper, the concept of flexible peak shaving is delineated. The developmental status of flexible peak shaving in China is introduced, and the challenges of flexible boiler peak shaving are summarised. The genesis, principles, efficacy, advantages, and limitations of three technologies, namely, thermo-hydrodynamic system optimisation, external energy storage system configuration, and control system optimisation, are elaborated. Ongoing research is summarised, and the leading teams in China are highlighted. This review describes five demonstration projects undertaken in China and explains policy support and compensation mechanisms. It is found that flexible peak shaving can be achieved by combining deep and fast peak shaving. The fast peak shaving capacity of China’s coal-fired boilers is insufficient, and the primary challenge is the lack of energy supply capacity. For fast peak shaving, external energy storage system configuration techniques such as Ruths steam storage and molten salt thermal energy storage are more appropriate. To improve the enthusiasm for fast peak shaving of coal-fired power units, a national compensation mechanism should be implemented in China.
期刊介绍：
Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.
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