Heating control method for vehicle and system thereof

A heating control system for a vehicle, the system comprising:

• a refrigerant configured to circulate through a compressor and a heater core to perform heating control of the vehicle;
• wherein the refrigerant comprises at least one selected from the group consisting of:
• a natural refrigerant;
• a hydrofluorocarbon (HFC)-based refrigerant;
• a hydrofluoroolefin (HFO)-based refrigerant;
• a hydrochlorofluorocarbon (HCFC)-based refrigerant;
• a hydrocarbon-based refrigerant that is not a natural refrigerant;
• and
• a halon or a perfluorocarbon (PFC)-based refrigerant.

A heating control method for a vehicle comprising:

• operating an air conditioning system in a heating mode using a refrigerant composition comprising at least one hydrofluorocarbon and at least one hydrofluoroolefin;
• controlling the heating performance of the vehicle by regulating a post-compression temperature of the refrigerant, a flow rate of the refrigerant passing through a heater core, and a rotation speed of a blower fan supplying air to the heater core, based on a temperature difference between a target temperature set by user input and an indoor temperature of the vehicle;
• wherein the at least one hydrofluorocarbon refrigerant comprises at least one selected from the group consisting of chlorodifluoromethane (R-22), chlorotetrafluoroethane (R-124), and 1-chloro-1,1-difluoroethane (R-142b);
• and
• wherein the hydrofluoroolefin (HFO)-based refrigerant comprises at least one selected from the group consisting of:
• 1,1,2-trifluoroethylene (R-1123), 1-chloro-2,3,3,3-tetrafluoropropene (R1224yd(Z)), 2,3,3,3-tetrafluoropropene (R-1234yf), 1,3,3,3-tetrafluoropropene (R-1234ze), 1,2,3,3-tetrafluoropropene (R-1234ye), 3,3,3-trifluoropropene (R-1243zf), 1,1-difluoroethylene (R-1132a), and 1,2,3,3,3-pentafluoropropene (R-1225ye).