Climate-control system with thermal storage

A climate-control system comprising:

• a compressor configured to compress a working fluid, the compressor comprising a suction inlet, an intermediate-pressure inlet, an intermediate-pressure outlet, a discharge outlet, and a plurality of compression pockets, wherein the plurality of compression pockets includes a suction-pressure pocket, a first intermediate-pressure pocket, a second intermediate-pressure pocket, and a discharge-pressure pocket;
• a thermal storage device including a conduit in fluid communication with the compressor, the thermal storage device containing a phase-change material surrounding the conduit;
• an outdoor heat exchanger in fluid communication with the compressor;
• an indoor heat exchanger in fluid communication with the compressor;
• a first expansion valve in fluid communication with the indoor heat exchanger and the outdoor heat exchanger;
• and
• a second expansion valve in fluid communication with the indoor heat exchanger and the outdoor heat exchanger;
• wherein the intermediate-pressure outlet of the compressor receives working fluid from the first intermediate-pressure pocket of the compressor,
• wherein the intermediate-pressure inlet of the compressor provides working fluid to the second intermediate-pressure pocket of the compressor,
• wherein working fluid in the discharge-pressure pocket is at a higher pressure than working fluid in the first intermediate-pressure pocket, wherein working fluid in the first intermediate-pressure pocket is at a higher pressure than working fluid in the second intermediate-pressure pocket, wherein working fluid in the second intermediate-pressure pocket is at a higher pressure than working fluid in the suction-pressure pocket,
• wherein when the climate-control system is operating in a discharging mode, the climate-control system is operable in a heating mode and a cooling mode,
• wherein when the climate-control system is operating in the discharging mode and the heating mode, the working fluid absorbs heat from the phase-change material as the working fluid flows through the conduit of the thermal storage device, and
• wherein when the climate-control system is operating in the discharging mode and the cooling mode, the phase-change material transfers heat to the working fluid as the working fluid flows through the conduit of the thermal storage device.