Optimal design and application of a compound cold storage system combining seasonal ice storage and chilled water storage

Chengchu Yan, Wenxing Shi, Xianting Li and Yang Zhao

Applied Energy, 2016, vol. 171, issue C, 11 pages

Abstract: Seasonal cold storage using natural cold sources for cooling is a sustainable cooling technique. However, this technique suffers from limitations such as large storage space and poor reliability. Combining seasonal storage with short-term storage might be a promising solution while it is not explored sufficiently. This paper presents a compound cold storage system that combines a heat pipe-based seasonal ice storage system with a chilled water storage system. The seasonal ice storage system automatically charges winter cold energy in the form of ice. In summer, the stored ice is extracted for cooling, and then the melting ice is used as a chilling medium for chilled water storage. Design optimization of the seasonal ice storage system and the compound storage system is addressed, including the sizes of heat pipes, the configuration and volume of the cold storage tank and the chiller capacity. A case study is conducted to demonstrate the design and the application of the proposed system in a real building in Beijing. Results show that the appropriate combination of the two types of cold storage can greatly improve the applicability of the seasonal cold storage and reduce the life-cycle cost of a building cooling system by 40%.

Keywords: Seasonal thermal storage; Chilled water storage; Renewable energy; Optimal design; Life-cycle assessment (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (20)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:171:y:2016:i:c:p:1-11

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DOI: 10.1016/j.apenergy.2016.03.005

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