Air conditioning system for vehicle

A vehicle air conditioning system, comprising:

• a heating duct configured to receive internal air and external air;
• a cooling duct configured to receive internal air and external air;
• a condenser disposed in the heating duct;
• an evaporator disposed in the cooling duct and connected to the condenser via a refrigerant line;
• a phase change material (PCM) stored in a housing that is separate from the refrigerant line, wherein the housing is within the heating duct and the cooling duct, and wherein the PCM stores thermal energy of the internal air passing through the heating duct and the cooling duct;
• internal/external air doors configured to open and close so as to control the mixing of the internal air and the external air introduced into the heating and cooling ducts;
• and
• first and second phase change material (PCM) doors configured to open and close so as to control the external air introduced through the heating and cooling ducts whether to pass through the PCM;
• wherein the first and second PCM doors are disposed between respective internal/external air doors and the PCM.