Rotary magnetic heat pump

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:6796071

Kirol, L D; Mills, J I

Magnetic heat pumps use the magneto-caloric effect to produce entropy changes necessary for heat pumping. A rotary magnetic heat pump has been analyzed and computer models have been developed. The contribution of viscous heat to the regenerator heat balance has been found to significantly restrict performance. The contribution of viscous heating is at least as important as the temperature differences required for regenerator heat transfer. Multiple magnet coils on a single rotor reduce the viscous work per field change cycle and result in greatly improved performance. Operation at 80% of Carnot efficiency with a heat pumping rate of 10 kW per kilogram of magnetic material is predicted.

• Research Organization: Idaho National Engineering Lab., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 6796071
• Report Number(s): EGG-M-24283; CONF-840804-47; ON: DE84017017
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
COMPUTERIZED SIMULATION
ENERGY BALANCE
ENERGY TRANSFER
ENTROPY
FLUID FLOW
HEAT PUMPS
HEAT TRANSFER
MAGNETO-THERMAL EFFECTS
PERFORMANCE
PHYSICAL PROPERTIES
PRESSURE DROP
SIMULATION
TEMPERATURE EFFECTS
THERMODYNAMIC PROPERTIES
VISCOUS FLOW