Fault Detection and Diagnosis for Thermal Energy Storage HVAC System

热能储存HVAC系统的故障检测与诊断

• 批准号: 10650587
• 负责人: SAGARA Kazunobu
• 金额: $ 2.24万
• 依托单位: Mie University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650587/
• 关键词: Thermal Energy Storage; Fault; Detection; Diagnosis; Air-conditioning; Fuzzy; Expert System; Simulation

The objective of this research project is the optimum operation of HVAC system having thermal energy storage without any faults. In order to realize the fault detection and diagnosis, the performance indices of storage operation, the tool for fault detection and diagnosis and the optimum operation with computer simulation were studied. The following is the summary of the obtained results.1. The indices for the peak shift and peak cut operations were presented to evaluate the operation condition in actual systems. And, the usefulness of these indices were validated by using the measured data in actual systems.2. An expert system was constructed by combining the fuzzy abduction algorithm for fault detection and diagnosis with knowledge database for reasons and symptoms of faults. And, the effect of the membership function on the obtained diagnosis result was studied.3. The model parameters of physical models for chiller and air-handling unit in thermal energy storage system were identified from the measured data in actual systems. And, these models were combined with the mixing model of water tank for thermal energy storage, and a computer program allowing to simulate the operation condition was built up as a tool for cost/benefit analysis of fault improvement.4. The temperature profile in water tank was predicted by using the mixing model of water tank and the measured data. And, by convergence calculation to obtain the minimum error of the predicted temperature profile, the flow rate through the water tank, chillers and air-handling units were estimated as well as the characteristics of chillers and air-handling units in actual systems. This procedure was found to allow to simulate the operation condition accurately without any physical models for chillers and air-handling units.

本课题的研究目标是无故障蓄热暖通空调系统的最佳运行。为了实现故障检测与诊断，研究了存储运行的性能指标、故障检测与诊断工具以及计算机模拟的优化运行。以下是所得结果的摘要。提出了移峰和削峰操作的指标，用以评价实际系统的运行状况。并通过实际系统的实测数据验证了这些指标的有效性。将故障检测诊断的模糊溯因算法与故障原因、故障症状知识库相结合，构建了一个专家系统。研究了隶属度函数对诊断结果的影响。根据实际系统的实测数据，确定了蓄热系统中冷水机组和空气处理机组的物理模型参数。并将这些模型与蓄热水箱的混合模型相结合，建立了运行工况的计算机模拟程序，作为故障改进的成本效益分析工具。利用水箱混合模型和实测数据对水箱内温度分布进行了预测。并通过收敛计算获得预测温度曲线的最小误差，估算出水箱、冷水机组和空处理机组的流量以及实际系统中冷水机组和空处理机组的特性。发现该程序允许在没有任何物理模型的情况下准确地模拟冷水机组和空气处理机组的运行条件。

项目成果

K.Nakai, K.Shuku, H.Kitano and K.Sagara: "Study of Evaluation of Heat Source Operation for Thermal Storage HVAC Systems"Transactions of the Society of Heating, Air-conditioning and Sanitary Engineers of Japan. No.74. 37-47 (1999)

K.Nakai、K.Shuku、H.Kitano 和 K.Sagara：“蓄热 HVAC 系统热源运行评估研究”日本供暖、空调和卫生工程师学会会刊。

K.Nakai,K.Shuku,H.Kitano and K.Sagara: "Evaluation and Simulation of cost Saving Operation for Thermal Storage HVAC System"Proc. of Building Simulation '99. Vol.2. 989-996 (1999)

K.Nakai、K.Shuku、H.Kitano 和 K.Sagara：“蓄热 HVAC 系统成本节约运行的评估和模拟”Proc。

中井一夫,北野博亮,祝家燕,相良和伸: "蓄熱式空調システムの熱源運転評価に関する研究"空気調和・衛生工学会論文集. No.74. 37-47 (1999)

Kazuo Nakai、Hiroaki Kitano、Tsubame Yuke、Kazunobu Sagara：“再生空调系统的热源运行评估研究”，空调与卫生工程师学会论文集第 74 期（1999 年）。

K.Nakai, K.Shuku, H.Kitano and K.Sagara: "Evaluation and Simulation of cost Saving Operation for Thermal Storage HVAC System"Proc.of Building Simulation '99. Vol.2. 989-996 (1999)

K.Nakai、K.Shuku、H.Kitano 和 K.Sagara：“蓄热 HVAC 系统的成本节省操作的评估和模拟”Proc.of Building Simulation 99。

中井一夫 ほか: "蓄熱式空調システムの熱源運転評価に関する研究"空気調和・衛生工学会論文集. No.74. 37-47 (1999)

Kazuo Nakai 等人：“再生式空调系统热源运行评估研究”空调与卫生工程师学会会议录第 74. 37-47 号（1999 年）。