| 摘要 |
An air conditioning system for selectively controlling the air temperature within an enclosed space, the air conditioning system comprising a compressor, a first exchanger utilising ambient air to cool/condense the refrigerant, an expansion valve, a second heat exchanger and means for passing ambient air from outside the enclosed space and/or re-circulated air from within the enclosed spaced through the second heat exchanger and discharging the air into the enclosed space, the air conditioning system being operable in a first state as a refrigeration system for cooling the enclosed space and in a second state as a heat pump for heating the enclosed space. When in its second state the refrigerant bypasses the first heat exchanger and is condensed/cooled in a third heat exchanger by heat transfer with air from within the enclosed space. |
