Optimal heat pumps for solar-assisted heat-pump systems

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:5689211

Catan, M A

Work at Brookhaven National Laboratory (BNL) investigates the design of optimal heat pumps for solar assisted heat pump (SAHP) systems. Heat pump designs suitable for two generic systems, identified in the course of recent analytical work, are being studied. These are series SAHP systems operating at evaporator temperatures in the -5 to 10/sup 0/C range and those operating at evaporator temperatures in the 10 to 35/sup 0/C range. A heat pump simulator has been constructed with liquid based source subsystem and two load subsystems, one for testing air cooled condensers and one for testing water cooled condensers. Heat pumps tested were composed of various components including several types of variable and fixed capacity compressors, two types of expansion devices, and heat exchangers varying in size and type. Refrigerant pressures and temperatures, water and air temperatures, and flowrates, air moisture content, compressor and parasitic power consumption were measured under transient and steady state operating conditions appropriate for the system being simulated. Heat pump performance data demonstrating the devices used to achieve high coefficients of performance (COP) under various SAHP conditions are presented. Incipient and future work is described.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5689211
• Report Number(s): BNL-30140; CONF-810865-5; ON: DE82004798
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140901* -- Solar Thermal Utilization-- Space Heating & Cooling
AIR CONDITIONERS
ANALOG SYSTEMS
COEFFICIENT OF PERFORMANCE
COMPRESSORS
DESIGN
ENERGY SYSTEMS
EQUIPMENT
EVAPORATORS
FUNCTIONAL MODELS
GAS COMPRESSORS
HEAT PUMPS
HEATING SYSTEMS
OPTIMIZATION
PERFORMANCE TESTING
SIMULATORS
SOLAR AIR CONDITIONERS
SOLAR COOLING SYSTEMS
SOLAR EQUIPMENT
SOLAR HEATING SYSTEMS
SOLAR-ASSISTED HEAT PUMPS
TEMPERATURE DEPENDENCE
TESTING