Carbon dioxide air conditioning system for building and contain this air conditioning system's building

The utility model relates to a carbon dioxide air conditioning system for building and contain this air conditioning system's building. The utility model discloses a carbon dioxide air conditioning system for building, including indoor heat exchanger, carbon dioxide gas compressor, source heat exchanger and switching -over device, indoor heat exchanger, carbon dioxide gas compressor and ground source heat exchanger pass through the carbon dioxide cycle tube coupling and form circulation circuit, the setting of switching -over device is in the carbon dioxide cycle pipeline, indoor heat exchanger setting is in the building floor and/or in the wall body, ground source heat exchanger setting underground. The beneficial effects are that: utilize carbon dioxide with geothermol power perhaps cold heat circulate in the building, provide heat source or cold source through the thermal mode of radiative interchange, with low costs, low energy consumption, pollution -free, temperature uniformity good. Can not only practice thrift the space, indoor temperature distributes evenly moreover, and the room temperature is undulant little, does not have blow sense, noiseless, and human body comfort and energy -conserving benefit are better than conventional air conditioner.