Laboratory capacity modulation experiments, analyses and validation

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6912178

Miller, W A

A combined experimental and analytical project was conducted on a breadboarded continuously variable speed air-to-air heat pump (CVSHP). The split-system residential unit of nominal 2-3/4-ton (9. 7-kW) cooling capacity was instrumented and tested in environmental chambers. The steady-state, frosting/demand defrosting, and cycling efficiency characteristics of the CVSHP with first generation components (e.g., heat exchangers, compressor, and indoor blower, both having variable speed induction motors) were measured in the laboratory for compressor drive frequencies ranging from 15 through 90 Hz. Steady-state efficiency data were used to validate an initial version of the Oak Ridge National Laboratory steady-state modulating heat pump design program. Algorithms were developed from reduced dynamic loss data from which calculations were made of the seasonal losses for the test CVSHP. 18 refs., 10 figs., 5 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6912178
• Report Number(s): CONF-8804100-17; ON: DE88012930
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
CALORIMETRY
CAPACITY
COMPRESSORS
DATA
DIAGRAMS
EFFICIENCY
ENERGY EFFICIENCY
EXPERIMENTAL DATA
FLOWSHEETS
FLUIDS
HEAT EXCHANGERS
HEAT PUMPS
INFORMATION
NUMERICAL DATA
OPTIMIZATION
PERFORMANCE TESTING
REFRIGERANTS
TESTING
THERMAL CYCLING
WORKING FLUIDS