What are the advantages of carbon dioxide heat pump water supply units?

The company has developed a carbon dioxide heat pump water supply unit, including a carbon dioxide heat pump. The carbon dioxide heat pump includes a first compressor, a second compressor, a first regenerator, a first cooler, a second cooler, a first throttle valve, a first Two throttle valves, a second regenerator and an evaporator, the first regenerator includes a first heat release pipe and a first heat absorption pipe, the second heat exchanger includes a second heat release pipe and a second heat absorption pipe, the first The compressor, the second compressor, the first cooler, the second cooler, the first heat release pipe, the second heat release pipe, the second throttle valve, the evaporator and the second heat absorption pipe are connected in sequence to form a loop. The flow valve and the first heat absorbing pipe are connected in series and in parallel with the second compressor, the first cooler and the second cooler in sequence through pipes. According to the carbon dioxide heat pump water supply unit of the utility model, the compression ratio can be reduced, the throttling loss can be reduced, and the energy efficiency ratio of the system can be improved.