Laboratory examination and seasonal analyses of the dynamic losses for a continuously variable speed heat pump

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

OSTI ID:7174165

Miller, W A

An air-to-air split-system, continuously variable speed heat pump of nominal; 2-1/2 ton (8.8 kW) cooling capacity was instrumented and tested in this laboratory. The system operating conditions, coefficient of performance, and system capacity were measured during frosting/defrosting tests and during both heating and cooling mode cycling tests. Frosting/defrosting tests were conducted for a range of compressor speeds, outdoor air temperatures, and relative humidities. Cycling tests were conducted for a range of compressor speeds and outdoor temperatures. Dynamic loss algorithms were developed from the data and seasonal analysis simulations were made to estimate the potential energy savings due to compressor and indoor blower modulation. For Ft. Worth (Tex.), Knoxville (Tenn.), and Syracuse (N.Y.), analysis of energy cost savings due to modulation justify a cost premium of $400 for three-year payback. 14 refs., 12 figs., 7 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7174165
• Report Number(s): CONF-880627-3; ON: DE88013207
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
COEFFICIENT OF PERFORMANCE
COMPRESSORS
CONTROL EQUIPMENT
COOLING SYSTEMS
COST BENEFIT ANALYSIS
DATA
DEFROSTING
EFFICIENCY
ENERGY CONSERVATION
ENERGY EFFICIENCY
ENERGY SYSTEMS
EQUIPMENT
EXPERIMENTAL DATA
HEAT EXCHANGERS
HEAT PUMPS
HEATING SYSTEMS
INFORMATION
NUMERICAL DATA
PERFORMANCE TESTING
SEASONAL VARIATIONS
SPEED REGULATORS
TESTING
VAPOR COMPRESSION REFRIGERATION CYCLE
VARIATIONS