* The fault evaluation agent uses symptoms and faults generated from the other two agents to estimate the impacts of faults based on their symptom severity.
The purpose of the fault evaluation agent is to provide easy-to-understand impact metrics to the building operators.
While most of the evaluated metrics seem to agree with the actual impacts, for the VAV reheat valve stuck closed fault, the fault evaluation agent overestimated the thermal comfort impact.
Metrics used in Fault Evaluation Agent Metric Unit Method Energy kWh 1,2 Thermal comfort PPD 2 Cost $ 2 Table 2.