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通过理论分析及空调器整机性能试验， 说明混合工质Ｒ４０７Ｃ是变频冷暖空调器中Ｒ２２ 的灌注式替代工质。
Through theoretical analysis and performance test of the whole air conditioner, it is shown that the mixed refrigerant R407C is a perfusion alternative working fluid in the R22 in the variable frequency heating and air conditioning unit.