Comparison of field performance of a high-efficiency heat pump with and without a desuperheater water heater
Conference
·
· ASHRAE Trans.; (United States)
OSTI ID:6118519
An air-to-air heat pump run alternately with an electric-resistance water heater and a desuperheater water heater was tested under field conditions. Results from these tests indicate that the desuperheater system has an annual performance factor (measured over a six-month period consisting of three winter and three summer months) 14% better than that of the system using electric resistance water heating. An analytical model predicts a 21% improvement over an entire year with average weather for the desuperheater system. The simple payback period ranges from seven years (for a 21% improvement) to about nine years (for a 14% improvement).
- Research Organization:
- Oak Ridge National Laboratory
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6118519
- Report Number(s):
- CONF-840124-
- Conference Information:
- Journal Name: ASHRAE Trans.; (United States) Journal Volume: 90:1B
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320101* -- Energy Conservation
Consumption
& Utilization-- Residential Buildings-- (-1987)
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
AIR SOURCE HEAT PUMPS
APPLIANCES
BUILDINGS
COEFFICIENT OF PERFORMANCE
EFFICIENCY
ELECTRIC HEATING
HEAT PUMPS
HEATERS
HEATING
MATHEMATICAL MODELS
MEDIUM TEMPERATURE
PAYBACK PERIOD
PERFORMANCE TESTING
RESIDENTIAL BUILDINGS
RESISTANCE HEATING
SEASONAL VARIATIONS
SUPERHEATERS
TESTING
THERMAL EFFICIENCY
VARIATIONS
WATER HEATERS
WEATHER
320101* -- Energy Conservation
Consumption
& Utilization-- Residential Buildings-- (-1987)
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
AIR SOURCE HEAT PUMPS
APPLIANCES
BUILDINGS
COEFFICIENT OF PERFORMANCE
EFFICIENCY
ELECTRIC HEATING
HEAT PUMPS
HEATERS
HEATING
MATHEMATICAL MODELS
MEDIUM TEMPERATURE
PAYBACK PERIOD
PERFORMANCE TESTING
RESIDENTIAL BUILDINGS
RESISTANCE HEATING
SEASONAL VARIATIONS
SUPERHEATERS
TESTING
THERMAL EFFICIENCY
VARIATIONS
WATER HEATERS
WEATHER