The figure-of-merit indicating the quality of a refrigeration unit is usually the coefficient of performance COP heat absorbedet work put in What is the COP for this magnetic refrigeration device? (use wnet=100J/mol ) In this problem, you will consider an "unusual" solid-state refrigeration device that achieves cooling by varying the magnetization of the working material (gadolinium sulphate octahydrate) at constantpressure conditions. By contrast, most refrigeration cycles achieve cooling based on manipulating pressures of the working fluid. The device functions roughly as shown at the right wherein a paramagnetic wheel is rotated through different regions: - i ) a low-temperature region (12) - ii) a low-magnetic field region (23) - iii) a high-temperature region (34) - iv) a high-magnetic field region (41) In the figure, the thermodynamic state at the point of entry/exit from each region is shown. The figure-of-merit indicating the quality of a refrigeration unit is usually the coefficient of performance COP heat absorbedet work put in What is the COP for this magnetic refrigeration device? (use wnet=100J/mol ) In this problem, you will consider an "unusual" solid-state refrigeration device that achieves cooling by varying the magnetization of the working material (gadolinium sulphate octahydrate) at constantpressure conditions. By contrast, most refrigeration cycles achieve cooling based on manipulating pressures of the working fluid. The device functions roughly as shown at the right wherein a paramagnetic wheel is rotated through different regions: - i ) a low-temperature region (12) - ii) a low-magnetic field region (23) - iii) a high-temperature region (34) - iv) a high-magnetic field region (41) In the figure, the thermodynamic state at the point of entry/exit from each region is shown