Performance of heat pumps at elevated evaporating temperatures: with application to solar input

Conference · Mon Jan 01 04:00:00 EST 1979

OSTI ID:5886078

Kush, E A

As part of the study of Solar Assisted Heat Pump (SAHP) systems, the performance of the heat pump component itself under conditions attendant to series solar input is being investigated. Notably the effect of high source temperatures, for which current heat pumps are not designed, and the associated thermodynamic potential to raise peformance are of interest. Theoretical predictions, results of systematic experiments run on a special heat pump simulator, and interpretation/analysis of how high Coefficients of Performance (COP) heat pumps can be used in installed SAHP systems are presented. The latter aspect is vital for - although results have shown that substantial increase in COP can be achieved even using off-the-shelf heat pump components - the more difficult problem is supplying sufficient solar energy to the heat pump with a practical, cost-competitive system. The approach taken to the high temperature heat pump study makes the results generally applicable to any vapor compression heat pump with elevated evaporating temperatures.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• OSTI ID: 5886078
• Report Number(s): BNL-26772; CONF-791205-15
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140901* -- Solar Thermal Utilization-- Space Heating & Cooling
AIR CONDITIONERS
ANALOG SYSTEMS
APPLIANCES
COEFFICIENT OF PERFORMANCE
EFFICIENCY
ELECTRIC APPLIANCES
EVAPORATORS
FUNCTIONAL MODELS
HEAT EXCHANGERS
HEAT PUMPS
HEATING SYSTEMS
PERFORMANCE
SIMULATORS
SOLAR AIR CONDITIONERS
SOLAR COOLING SYSTEMS
SOLAR HEATING SYSTEMS
SOLAR-ASSISTED HEAT PUMPS
SYSTEMS ANALYSIS
TEMPERATURE DEPENDENCE
THERMODYNAMICS
VAPOR COMPRESSION REFRIGERATION CYCLE
WATER SOURCE HEAT PUMPS