Comprehensive Analysis for Air Supply Fan Faults Based on HVAC Mathematical Model

Abstract:

Due to the growing demand on high efficient heat ventilation and air conditioning (HVAC) systems, how to improve the efficiency of HVAC system regarding reduces energy consumption of system has become one of the critical issues. Reports indicate that efficiency and availability are heavily dependent upon high reliability and maintainability. Recently, the concept of e-maintenance has been introduced to reduce the cost of maintenance. In e-maintenance systems, the fault detection and isolation (FDI) system plays a crucial role for identifying failures. Finding healthy HVAC source as the reference for health monitoring is the main aim in this area. To dispel this concern a comprehensive transient model of heat ventilation and air conditioning (HVAC) systems is developed in this study. The transient model equations can be solved efficiently using MATLAB coding and simulation technique. Our proposed model is validated against real HVAC system regarding different parts of HVAC. The developed model in this study can be used for a pre tuning of control system and put to good use for fault detection and isolation in order to accomplish high-quality health monitoring and result in energy saving. Fan supply consider as faulty device of HVAC system with six fault type. A sensitivity analysis based on evaluated model shows us three features are sensitive to all faults type and three auxiliary features are sensitive to some faults. The magnitude and trait of features are a good potential for automatic fault tolerant system based on machine learning systems

• Periodical: Advanced Materials Research (Volumes 452-453)
• Pages: 460-468
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.452-453.460
• Online since: January 2012
• Authors: Davood Dehestani, Jafar Madadnia, Homa Koosha, Fahimeh Eftekhari
• Keywords: Control Tuning, FDI, HVAC, Mathematical Modeling, Sensitivity Analysis, Supply Fan Faults

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