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Simulation Study of a Hierarchical, Rule-Based Method for System-Level Fault Detection and Diagnostics in HVAC Systems.


pdf icon Simulation Study of a Hierarchical, Rule-Based Method for System-Level Fault Detection and Diagnostics in HVAC Systems. (242 K)
Schein, J.; Bushby, S. T.

NISTIR 7216; 20 p. April 2005.

Keywords:

heating; ventilation; air conditioning; simulation; fault detection; environmental engineering; fault location; methodology; decision making

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.