magnetic refrigeration by fousiya
TRANSCRIPT
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