Keywords

Abstract

Four high-efficiency heat pumps and one older unit, serving residential loads in Oregon, were monitored for one year to characterize heating and cooling performance. The monitoring sites were climatically diverse; coastal, mild valley and high desert climates were represented. The monitoring was thorough enough to quantify the true electrical input power and output thermal power for all operating modes including defrost. The results showed all units performing below expectations for identifiable reasons. The most significant failures were associated with excess icing, improper use of resistance backup heat and faulty staging of a scroll compressor. This work led to corrections that improved the system operating efficiencies as monitoring proceeded. The work also led to recommendations that can be generally applied toward improved heat pump performance.

Paper

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Panels of the 2006 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 Competition: 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. Changing the Climate for Energy Efficiency: Local, National, and International Policy Dimensions

Panel 9. Appliances, Lighting, Information Technologies, Consumer Electronics, and Miscellaneous End Uses

Panel 10. Roundtables and Interactive Sessions: Learning by Doing

Panel 11. Efficient Communities

Panel 12. Energy Conversations