- Author
-
Maxwell, B. R.
- Title
- Procedures for Testing, Rating, and Estimating the Seasonal Performance of Engine-Driven Heat Pump Systems.
- Coporate
- National Bureau of Standards, Washington, DC
- Sponsor
- Department of Energy, Washington, DC
- Report
-
NBSIR 79-1911
September 1979
- Distribution
- Available from National Technical Information Service
- Keywords
-
heat pumps; space heating; cooling systems; buildings; performance; seasonal variations; computation
- Abstract
- A generic test and rating procedure is developed for heat engine-driven air-to-air heat pump systems. The procedures are classified according to whether the systems have single-speed, two-speed, or variable-speed capability, and whether they are operating in the heating or cooling mode. The test requirements generally consist of a series of steady-state tests to establish the impact of outdoor temperature on performance, two or more part-load (cyclic) tests to determine the effect of 'on-off' cycling, two steady-state intermediate speed tests to determine part-speed performance, and a single frost accumulation test to estimate the effect of frost. A generalized calculation and rating procedure is developed. The system is rated in both modes based upon its steady-state performance at the ARI standard rating points, its seasonal performance factor, and its seasonal operating cost. A frost degradation coefficient is also established. The seasonal parameters are based upon either a residential or commercial/industrial building application which is located in either a generalized northern or southern climate.