冰球场载冷剂管道优化设计

Ice rink secondary coolant pipe optimization design

一个良好的冰球场载冷剂管道设计可以为冰球竞技场节省大量的初期投资成本和运营成本。冰球场的载冷剂管道设计着重于寻找一种具有节省成本的管道布置以及管道上的最佳混凝土覆盖方案,从而可以在载冷剂和冰层之间提供足够的传热率。本文建立了一个理论模型,模拟了不同直径、间距和混凝土覆盖层厚度的冰球场载冷剂管道的传热特性;对常用载冷剂氯化钙和乙二醇水溶液进行了比较,找出了这两种二次载冷剂的优缺点;模型预测结果与ASHRAE进行了比较,以期获得最佳的冰球场制冷装置方案。

A good design of the ice rinks floor can save plenty of first capital investment and operational cost for hockey arena.The ice rink floor design focuses on finding a cost-effective tube arrangement and the optimal concrete coverage over the tubes that can provide sufficient heat transfer rate between the coolant and freezing ice.The paper proposed a theoretical model to simulate the heat transfer characteristic of different tube diameter,spacing distance and thickness of the concrete coverage on the tubes of ice rink.Also,calcium chloride and ethylene glycol with water solutions were compared to figure out the pros and cons for these two secondary coolants.The model prediction was compared with the ASHRAE standard recommendation to discover the best floor arrangement scenario.