Kotani Y., Kansha Y., Ishizuka M., Tsutsumi A., 2014, Theoretical and Experimental Investigation on the Energy Consumption of Self-Heat Recuperation using Magnetocaloric Effect, Chemical Engineering Transactions, 39, 175-180.
The minimum energy consumption needed for heat circulation is derived from the exergy destruction due to heat exchange in terms of temperature-entropy diagram. The obtained value is compared with the numerical energy consumption when magnetocaloric effect is applied to self-heat recuperation technology. Furthermore, a magnetocaloric heat circulator has newly been constructed and its energy consumption has been measured. It is explained by the temperature-entropy diagram, that the minimum energy consumption needed for heat circulation is proportional to the minimum temperature difference needed for heat exchange. In a magnetocaloric heat circulator, the heat transfer between the process fluid and the working material is direct, thus leading to small temperature difference during heat exchange and small input work required for heat circulation.
