A chemical heat storage device includes a reaction vessel accommodating a heat storage material, a heat exchange flow path provided so that a heat-exchange fluid flows along an outer surface of the reaction vessel, and the chemical heat storage device being configured in such a manner that the reaction vessel is rotated and the heat storage material is agitated, by a flow force of the heat-exchange fluid.

A chemical heat storage device includes a reaction vessel accommodating a heat storage material, a heat exchange flow path provided so that a heat-exchange fluid flows along an outer surface of the reaction vessel, and the chemical heat storage device being configured in such a manner that the reaction vessel is rotated and the heat storage material is agitated, by a flow force of the heat-exchange fluid.

A radiator apparatus and a radiator assembly include a plurality of radiators stacked together such that a fluid passing through the radiator apparatus passes through each radiator of the plurality of radiators. Each radiator has fins spanning across a thickness of the radiator. The fins define channels for the fluid to flow through the radiator. The channels have respective orientations in the plurality of radiators. The orientations of the channels in adjacent radiators differ such that a direction of the fluid passing through the plurality of radiators changes between adjacent radiators.

A radiator apparatus and a radiator assembly include a plurality of radiators stacked together such that a fluid passing through the radiator apparatus passes through each radiator of the plurality of radiators. Each radiator has fins spanning across a thickness of the radiator. The fins define channels for the fluid to flow through the radiator. The channels have respective orientations in the plurality of radiators. The orientations of the channels in adjacent radiators differ such that a direction of the fluid passing through the plurality of radiators changes between adjacent radiators.