- Author
- Schein, J. | Bushby, S. T.
- Title
- Simulation Study of a Hierarchical, Rule-Based Method for System-Level Fault Detection and Diagnostics in HVAC Systems.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
- NISTIR 7216, April 2005, 20 p.
- Keywords
- heating | ventilation | air conditioning | simulation | fault detection | environmental engineering | fault location | methodology | decision making
- Identifiers
- Fault Detection and Diagnostics (FDD) method; Air Handling Unit (AHU); Heating, Ventilation and Air Conditioning (HVAC) system; hierarchical-decision making framework; rule set for integrating multiple fault reports; flowchart of Hierarchical FDD algorithm; list of HVAC system and equipment faults; air handling unit supply air temperature setpoint too low; chilled water supply temperature fault; air handling unit supply air pressure setpoint too low
- Abstract
- A system-level fault detection and diagnostic (FDD) method for heating, ventilation and air conditioning (HVAC) systems was developed. It functions as an interface between multiple, equipment-specific FDD tools and a human operator. The method resolves conflicting fault reports from equipment-specific FDD tools, performance FDD at the system level and presents an integrated view of an HVAC system's fault status to an operator. A simulation study to test and evaluate the method was conducted.