magnetic refrigeration by fousiya

WELCOMEPREPARED BY FOUZIYA K

MAGNETIC REFRIGERATION

PRESENTED BY, FOUSIYA K 2nd MSc.PHYSICS

MAGNETIC REFRIGERATION

•It is a cooling technology based on magnetic caloric effect

•Used to attain extremely low temperature as well as the ranges used in common refrigerators

HISTORY•Descovered by: P.Weiss & A.Piccard

• Fundamental principle suggested:P Debye & W Giaque

•First working magnetic refrigerators were constructed by several groups beginning in 1933

MAGNETOCALORIC EFFECT

•Magneto thermodynamic phenomenon

•In which temperature change of a suitable material is caused by exposing the material to a changing magnetic field.

GADOLINIUM ALLOY HEATS UP INSIDE A MAGNETIC FIELD

EQUATIONMCE can be quantified with the equation

∆Tad=-∫((T/C(T,H))H((∂M(T,H)/∂T))H dH

REFERENCES•“WHO DISCOVERED MCE”-Journal of magnetism by Pecharsky V K

•Wikipedia