| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner, in which the efficiency of heat exchange by heating tubes is improved, when heat exchangers are used compressor or an evaporator, and capacities of condensation and evaporation are enhanced to attain an improved cooling/heating operation. SOLUTION: Heat exchangers 3, 7, having non-azeotropic refrigerant as refrigerant, are used respectively as an evaporator or a condenser in the cooling mode or heating mode. In the heat exchangers, there are provided heating tubes, having a co-current refrigerant flow with the air flow passing through the heat exchangers 3, 7 and heating-tubes having a flow which becomes counter flow to the air flow.
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