A review of fault detection and diagnosis methodologies on air-handling units

Yu, Yuebin; Woradechjumroen, Denchai; Yu, Daihong

doi:10.1016/j.enbuild.2014.06.042

Cited by 225 publications

(74 citation statements)

References 28 publications

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“…In the literature, miscellaneous FDD methods have been proposed, mainly including three techniques and their combinations, such as analytical modelbased, signal-based and knowledge-based methods [9,10,11,12,13]. The model- monitoring [10,12].…”

Section: Introductionmentioning

confidence: 99%

Fault detection and diagnosis for building cooling system with a tree-structured learning method

Zhou

et al. 2016

Energy and Buildings

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Section: Introductionmentioning

confidence: 99%

Fault detection and diagnosis for building cooling system with a tree-structured learning method

Zhou

et al. 2016

Energy and Buildings

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“…In the classification of faults, those with sensors and controllers are considered as one type only because feedback controllers are normally applied to modern engineering systems that mainly guarantee stability if the controller gains are suitably selected (Yuebin et al, 2014). This research focused on the three common faults of supply fans, valves, and heat exchangers.…”

Section: Fault Characteristicsmentioning

confidence: 99%

Fault Detection and Diagnosis with Modelica Language using Deep Belief Network

Lee

Shin

2015

Linköping Electronic Conference Proceedings

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The air handling unit (AHU) is the main component of heating, ventilation and airconditioning (HVAC) systems, and irregular faults in AHUs are major sources of energy consumption. For energy efficient operation of HVAC, this paper aims to detect and diagnose three abnormal states in the AHU with the popular deep learning model, called Deep Belief Network (DBN), where we train it using various data generated by Modelica.

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“…This will necessitate the need for monitoring of the operating performance of these systems so that air quality or building energy efficiency is not detrimentally affected [2,3]. The monitoring of airflow rates can indicate problems in the design, installation and operation of a HVAC system [2,3,4]. …”

Section: Introductionmentioning

confidence: 99%

Development of an Ultrasonic Airflow Measurement Device for Ducted Air

Raine

Aslam

Underwood

et al. 2015

Sensors

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In this study, an in-duct ultrasonic airflow measurement device has been designed, developed and tested. The airflow measurement results for a small range of airflow velocities and temperatures show that the accuracy was better than 3.5% root mean square (RMS) when it was tested within a round or square duct compared to the in-line Venturi tube airflow meter used for reference. This proof of concept device has provided evidence that with further development it could be a low-cost alternative to pressure differential devices such as the orifice plate airflow meter for monitoring energy efficiency performance and reliability of ventilation systems. The design uses a number of techniques and design choices to provide solutions to lower the implementation cost of the device compared to traditional airflow meters. The design choices that were found to work well are the single sided transducer arrangement for a “V” shaped reflective path and the use of square wave transmitter pulses ending with the necessary 180° phase changed pulse train to suppress transducer ringing. The device is also designed so that it does not have to rely on high-speed analogue to digital converters (ADC) and intensive digital signal processing, so could be implemented using voltage comparators and low-cost microcontrollers.

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A review of fault detection and diagnosis methodologies on air-handling units

Cited by 225 publications

References 28 publications

Fault detection and diagnosis for building cooling system with a tree-structured learning method

Fault detection and diagnosis for building cooling system with a tree-structured learning method

Fault Detection and Diagnosis with Modelica Language using Deep Belief Network

Development of an Ultrasonic Airflow Measurement Device for Ducted Air

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