Application of Automated Fault Detection and Diagnostics For Rooftop Air Conditioners in California
Haorong Li and James E. Braun, Purdue University
Keywords
Abstract
The primary goal of the research described in this paper was to apply a decoupling-based
fault detection and diagnosis (FDD) technique and economic assessment method to light
commercial cooling and heating equipment in California. The paper describes the decouplingbased
FDD methodology and the economic assessment method. The methods have been applied
to a number of field sites. Detailed results are given for a single site and summary results are
given for the other sites. About 70% of the investigated systems were impacted by faults and
about 40% had more than one fault. Service was justified for about 40% of the units. The FDD
technique was able to diagnose most of the existing faults. The estimated 10-year cost savings
for FDD ranged from about $800 to $1700 per ton.
Paper
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Panels of the 2004 ACEEE Summer Study on Energy Efficiency in Buildings
Panel 1. Residential Buildings: Technologies, Design, Performance Analysis, and Building Industry Trends
Panel 2. Residential Buildings: Program Design, Implementation, and Evaluation
Panel 3. Commercial Buildings: Technologies, Design, Performance Analysis, and Building Industry Trends
Panel 4. Commercial Buildings: Program Design, Implementation, and Evaluation
Panel 5. Utility Regulation and Deregulation: Incentives, Strategies, and Policies
Panel 6. Market Transformation: Designing for Lasting Change
Panel 7. Human and Social Dimensions of Energy Use: Trends and Their Implications
Panel 8. Energy and Environmental Policy: Changing the Climate for Energy Efficiency
Panel 9. Efficient Buildings in Efficient Communities
Panel 10. Roundtables: Thinking Outside the Box
Panel 11. Appliances and Equipment