Quantitative Analysis on Uniformity of Inflow of Fan Coil Unit in Containment Cooling System
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摘要: 分别采用数值模拟和实验测量2种方法对安全壳循环冷却机组风机盘管迎风面的进风均匀性进行了研究。数值计算分析了风机盘管的流场分布,实验测量获得了风机盘管迎风面上50个测点的进风速度数据。分别采用“断面风速均匀度”和“相对标准偏差”对测量结果和计算结果进行了数据处理,定量评定了盘管迎风面的进风均匀性,“断面风速均匀度”的评定结果不满足GB/T14294—2008规定的不低于80%的均匀性要求;“相对标准偏差”的评定结果超出了相对标准偏差值通常低于15%的均匀性要求。Abstract: The uniformity of the inflow of the fan coil unit in the containment cooling system was studied quantitatively by numerical simulation and experimental measurement in this paper. The flow field in the fan-coil unit was analyzed by numerical calculation. The inlet velocity data of 50 points on the windward face of the fan-coil unit were obtained by experimental measurement. The data from the measurement and the calculation were processed by using the definition of “Face Velocity Uniformity” and “Relative Standard Deviation”. The processing results quantitatively evaluated the uniformity of the inflow of the fan coil unit. The results of “Face Velocity Uniformity” did not meet the requirements in GB/T 14294—2008 for not less than 80%. The results of “Relative Standard Deviation” exceeded the requirement that the value was usually less than 15%.
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Key words:
- Containment /
- Fan coil unit /
- Uniformity of inflow /
- Quantitative analysis
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