Use of a ferrofluid as the heat-exchange fluid in a magnetic refrigerator

Journal Article · Thu Apr 01 00:00:00 EST 1982 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.331069· OSTI ID:5657755

Barclay, J A

The use of a ferrofluid is proposed as the heat-exchange fluid in a wheel-type magnetic refrigerator in order to avoid flow-control problems. An equivalent-circuit analysis of the ferrofluid flow path with several different magnetic field profiles indicates that it is possible to obtain the desired flow control in at least one case. Sample design calculations for the revised wheel-type refrigerator are presented. In addition, the results of heat-transfer measurements from kerosene to a stainless-steel screen and from a kerosene-base ferrofluid to the same screen in and out of an 8-T magnetic field are described.

• Research Organization: Group P-10, MS-764, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5657755
• Journal Information: J. Appl. Phys.; (United States), Vol. 53:4
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
MAGNETIC REFRIGERATORS
HEAT TRANSFER
DESIGN
EQUIVALENT CIRCUITS
FERROMAGNETIC MATERIALS
FLUID FLOW
FLUIDS
KEROSENE
MAGNETIC FIELDS
MATHEMATICAL MODELS
SPATIAL DISTRIBUTION
STAINLESS STEELS
THEORETICAL DATA
ALLOYS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
DATA
DISTRIBUTION
ELECTRONIC CIRCUITS
ENERGY TRANSFER
FUELS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LIQUID FUELS
MAGNETIC MATERIALS
MATERIALS
NUMERICAL DATA
PETROLEUM PRODUCTS
REFRIGERATORS
STEELS
420400* - Engineering- Heat Transfer & Fluid Flow