ABSTRACT This study presents extensive experimental measurements in a modern Finnish ice rink arena including temperature, relative humidity, carbon dioxide, air speed, air flow and pressure difference measurements in addition to smoke tests. Furthermore, the air exchange rate (ACH), air-exchange efficiency, and mixing factor were calculated. The main aim was to determine ventilation effectiveness, vertical stratification of the air and how commonly re-circulation can be used in a modern ice rink arena representing common practice. Results show that re-circulation of return air was virtually continuous and in normal operating conditions the outdoor air fraction of the supply air was only 3.7% corresponding to ACH of 0.03 1/h. The ceiling distributed mixing ventilation was not able to mix the whole volume sufficiently, leading to two imperfectly mixed zones with an average air-exchange efficiency of 39% in the lower zone, corresponding to a mixing factor of 1.7.

中文翻译：

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溜冰场空气分布及通风效率的实验研究

摘要 本研究展示了在现代芬兰溜冰场竞技场中进行的大量实验测量，包括温度、相对湿度、二氧化碳、空气速度、气流和压差测量以及烟雾测试。此外，还计算了空气交换率 (ACH)、空气交换效率和混合系数。主要目的是确定通风效率、空气的垂直分层以及再循环在代表常见做法的现代溜冰场中的使用频率。结果表明，回风的再循环实际上是连续的，在正常运行条件下，供气的室外空气分数仅为 3.7%，对应于 0.03 1/h 的 ACH。天花板分布式混合通风无法充分混合整个体积，