A regenerative air-conditioning apparatus is provided. The regenerative air-conditioning apparatus includes an outdoor unit including a compressor and an outdoor heat exchanger, an indoor unit provided on a side of the outdoor unit, the indoor unit including an indoor heat exchanger, a refrigerant tube that connects the outdoor unit to the indoor unit to guide circulation of a refrigerant, a heat accumulation bath provided on at least one side of the outdoor unit or the indoor unit to store cool air or heat, a first tube that extends from the refrigerant tube to one side of the heat accumulation bath, a second tube that extends from the other side of the heat accumulation bath to the refrigerant tube, and a third tube branched from the second tube, the third tube being connected to the refrigerant tube.

The present application provides a refrigeration system. The refrigeration system may include a compressor and a condenser downstream of the compressor. The condenser may include a refrigerant tube, an outer jacket surrounding the refrigerant tube, and a phase change material positioned between the refrigerant tube and the outer jacket and in contact with the refrigerant tube.

A vapor compression system includes a compressor, a condenser, an expansion device, and an evaporator fluidly connected to form a closed fluid loop having a fluid circulating therethrough. A thermal storage device including a phase change material is fluidly connected to and is arranged downstream from an outlet of the compressor relative to a flow of the fluid. A storage expansion device is arranged downstream from the thermal storage device and upstream from the evaporator and a valve is adjustable between a plurality of positions to control the flow of the fluid from the compressor to the thermal storage device.