Configurare pentru măsurarea rapidă a efectului magnetocaloric
Experimental setup for express measurements of the adiabatic temperature change in the room temperature range. The setup is intended for measurements of the magnetocaloric effect (MCE), namely adiabatic temperature change (ΔТ), in the temperature range from 273 to 370 K in order to get ΔТ versus temperature dependences rapidly and evaluate suitability of using of the material under investigation as a working body of magnetic refrigerators. The measurements in the setup are conducted by the direct method with the help of a thermocouple. The magnetic field change is accomplished by linear movement of the permanent magnet magnetic field source along the measuring insert. The setup operates in automatic mode under control of the program written on LabView.
The setup includes:
- the desktop measuring unit,
- the desktop control unit,
- the ΔТ measuring system,
- the control computer.
The enhanced algorithm of the setup operation makes possible to investigate up to 20 samples per day.