| 变流量冷媒水系统温度及流量传感器故障诊断 |
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| 引用本文： | 惠广海,晋欣桥,杜志敏.变流量冷媒水系统温度及流量传感器故障诊断[J].建筑热能通风空调,2003,22(6):13-18. |
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| 作者姓名： | 惠广海 晋欣桥 杜志敏 |
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| 作者单位： | 上海交通大学制冷及低温工程研究所 |
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| 摘 要： | 本文针对中央空调冷媒水侧的6个流量计和8个温度传感器，提出了一种基于数理统计的故障诊断方法。在变水量动态仿真器上，对选取的控制体建立守恒方程，根据测量的温度、流量值，运用守恒关系的残差表达式判断传感器是否有故障，再根据残差表达式的统计数学特性建立了诊断方程组，通过求解诊断方程组，得到传感器的固定偏差。
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| 关 键 词： | 温度传感器 流量计 故障诊断 变流量水系统 中央空调 |
| 文章编号： | 1003-0344(2003)06-013-06 |
Faults Detection and Diagnosis for Temperature and Flow Sensors in VWV Chilled Water Systems |
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| Hui Guanghai,Jin Xinqiao and Du Zhimin.Faults Detection and Diagnosis for Temperature and Flow Sensors in VWV Chilled Water Systems[J].Building Energy & Environment,2003,22(6):13-18. |
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| Authors: | Hui Guanghai Jin Xinqiao and Du Zhimin |
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| Abstract: | A statistic-based Faults Detection and Diagnosis (FDD) method for 8 temperature sensors and 6 flow meters in VWV chilled water systems is presented. The conservation equations of the control volume are set up, the volume balance residual is obtained according to the measured data. The equations for fault diagnosis are set up based on the residual equations and the mathematical characters. The fixed bias of the sensors and meters are obtained by solving these diagnosis equations. |
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| Keywords: | temperature sensors flow meters FDD VWV system |
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