- Author
-
Domanski, P. A.
- Title
- Rating Procedure for Mixed Air-Source Unitary Heat Pumps Operating in the Heating Mode.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Sponsor
- Department of Energy, Washington, DC
- Report
-
NISTIR 90-4298,
May 1990,
14 p.
- Distribution
- Available from National Technical Information Service
- Keywords
-
capacity
|
heat pumps
|
mixed system
|
mixed-matched system
|
rating procedure
|
seasonal efficiency
- Abstract
- A procedure is presented for determining the heating performance ratings of air-source unitary heat pumps consisting of an outdoor section and an indoor section which were not tested together as a system. The procedure allows calculation of capacity at the 47 deg F rating point and heating seasonal performance factor, HSPF, using as a reference point performance ratings of the outdoor unit tested under current DoE procedures in conjunction with a different indoor section. This procedure requires as input data the matched system rated performance, the ratio of condensing capacities of mixed and matched indoor coils, and the ratio of powers of mixed and matched indoor fans.