- Author
-
Dougherty, B. P.
- Title
- Proposed Methodology for Rating Integrated Air-Source Heat Pumps.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Sponsor
- Department of Energy, Washington, DC
Electric Power Research Institute, Palo Alto, CA
- Report
-
Research Project 2033-26; EPRI CU-6813,
April 1990,
107 p.
- Keywords
-
heat pumps
|
rating methodology
|
integrated appliance
|
space heating
|
air conditioning
|
water heating
|
seasonal performance
|
potable water
- Abstract
- At the National Institute of Standards and Technology (NIST), work is on-going to develop a proposed procedure for testing and rating air-source heat pumps that heat, cool, and provide domestic water heating. The family of appliances providing these three functions are referred to here as integrated (or combined) heat pump/water heating appliances. For these appliances, the heat pump contributes to heating the water in a storage-type water heater through the use of a refrigerant-to-potable water heat exchanger. The work at NIST has centered upon developing a proposed rating methodology for integrated appliances that heat water in a water heating only mode and while simultaneously air-conditioning or space heating. Despite the emphasis, the proposed methodology provides a framework for rating other types of integrated heat pump/water heating appliances. The laboratory testing, the calculation procedure, and the method for reporting performance are described. The testing is an adaption of the laboratory tests conducted when rating conventional heat pumps and water heaters. Seasonal estimates of energy consumption rates are calculated using a bin type approach. Combined performance factors and operating costs are used for reporting performance.