| 摘要 |
PURPOSE: An air conditioning system with non-defrost is provided to increase the efficiency of the air conditioning system by performing stable coolant circulation and non-defrost driving. CONSTITUTION: An air conditioning system with non-defrost comprises a dual pipe heat exchanger(400), a first thermal supply line(610), a second thermal supply line(630), and a third thermal supply line(650). The dual pipe heat exchanger is installed for the heat exchanging of low pressure coolant and low pressure low temperature coolant and to pass the coolant passed through a first expansion part(161) through an external pipe. The first thermal supply line transfers the heat energy of the lower pressure coolant to a coolant line returned to a compressor(110). The second thermal supply line comprises an auxiliary heater(635). The auxiliary heater transfers the heat energy of high pressure high temperature coolant passing through a compressor to the coolant passing through a condenser. The third thermal supply line the heat energy of high pressure high temperature coolant passing through a compressor to coolant returned to a compressor.
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