Rotary recuperative magnetic heat pump

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:5982732

Kirol, L D; Dacus, M W

A bench scale rotary magnetic heat pump now being built is described. The unique design feature of this heat pump is the method for achieving recuperator fluid flow, which relies simply on parallel flow paths; the primary flow leg allows heat transfer between external load and sink and magnetic working material, while parallel flow accomplishes recuperation. The bench scale test is intended to demonstrate feasibility of the concept and to verify that all significant loss mechanisms are identified and treated poorly in performance models, but is not a scaled down version of a practical heat pump. Working material is gadolinium foil 76 ..mu..m thick with 127 ..mu..m spaces for fluid flow. Magnetic fields are created by neodymium-iron-boron permanent magnets with an air gap field of about 0.9 Tesla. Due to the low field (practical heat pumps will use superconducting magnets with field strength around 9 T), temperature lift is limited to 11 K. 8 refs., 6 figs.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 5982732
• Report Number(s): EGG-M-16087; CONF-8706125-15; ON: DE88001575
• Resource Relation: Conference: Cryogenic engineering conference, St. Charles, IL, USA, 14 Jun 1987; Other Information: Paper copy only, copy does not permit microfiche production
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
HEAT PUMPS
DESIGN
GADOLINIUM
MAGNETIC FIELDS
PERMANENT MAGNETS
SUPERCONDUCTING MAGNETS
THERMODYNAMIC CYCLES
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELEMENTS
EQUIPMENT
MAGNETS
METALS
RARE EARTHS
SUPERCONDUCTING DEVICES
320106* - Energy Conservation
Consumption
& Utilization- Building Equipment- (1987-)