A seasonal cold storage system based on separate type heat pipe for sustainable building cooling
A seasonal cold storage system based on separate type heat pipe for sustainable building cooling
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DOI：
10.1016/j.renene.2015.07.023
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发表时间：
2016
期刊：
影响因子：
8.7
通讯作者：
Chengchu Yan;W. Shi;Xianting Li;Shengwei Wang
中科院分区：
文献类型：
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作者：
Chengchu Yan;W. Shi;Xianting Li;Shengwei Wang
季节性冷库是一种高效环保的技术，它利用冬季储存的自然冷能（例如雪、冰或寒冷的环境空气）在夏季进行自然冷却。本文介绍了一种采用分体式热管，在不消耗任何能源的情况下，在冬季自动从周围空气中获取冷能的季节性冷库系统。充电后的冷能以冰的形式储存在保温罐中，并在夏季提取为冷冻水供冷，这有助于减少冷水机的运行时间，并显著减少相关的电力消耗和温室气体排放。建立了该系统的准稳态二维数学模型，用于表征冰生长（即冷充注）的动态性能。利用在北京进行的冰充注试验的实测数据对模型进行了验证。分析了天气数据和热管关键参数等各种影响因素对冷库系统充能性能的影响。通过对北京一家幼儿园建筑的案例研究，证明了所提出的冷却系统的有效性和可持续性。
Seasonal cold storage is a high-efficient and environmental-friendly technique that uses the stored natural cold energy in winter (e.g., snow, ice or cold ambient air) for free-cooling in summer. This paper presents a seasonal cold storage system that uses separate type heat pipes to charge the cold energy from ambient air in winter automatically, without consuming any energy. The charged cold energy is stored in the form of ice in an insulated tank and is extracted as chilled water for cooling supply in summer, which help to reduce the chiller running time and reduce the associated electricity consumption and greenhouse gas emission significantly. A quasi-steady two-dimensional mathematical model of the system is developed for characterizing the dynamic performance of ice growth (i.e., cold charging). The model is validated using the field measurement data from an ice charging experiment conducted in Beijing. The impacts of various affecting factors, including the weather data and the key parameters of heat pipes, on the charging performance of the cold storage system are analyzed. The effectiveness and sustainability of the proposed system for cooling are demonstrated through a case study of a kindergarten building in Beijing.