Kia Soul EV: Heat Pump / Description and Operation

Kia Soul EV (PS EV) 2015-2020 Service Manual / Heating,Ventilation, Air Conditioning / Heat Pump / Description and Operation

Heat Pump Configuration and Operation
Heat pump is configured to circulate refrigerant flow for cooling/heating function.
This process minimizes battery consumption by the heater resulting in enhanced driving distance of EV.
[Heating]

1.
Outer Condenser - Evaporates liquid refrigerant and forms low temp-low pressure gas substance.
2.
3-Way Solenoid Valve #2 - Redirects the refrigerant direction towards the chiller when heat pump is active.
3.
Chiller - Uses waste heat from the motor and performs secondary heat exchange on low temp-low pressure gas.
4.
Accumulator - Separates gas/liquid so that only the refrigerant in gas state can flow into the compressor.
5.
Electric Compressor - Compressor is operated by electric motor. Converts low temp-low pressure gas refrigerant into high temp-high pressure gas and sends it to inner condenser.
6.
Inner Condenser - Condenses high temp-high pressure gas refrigerant and transforms it into high temp-high pressure liquid refrigerant.
7.
2-Way Solenoid Valve #1 - Instantly expands refrigerant to create low temp-low pressure refrigerant.
8.
2-Way Solenoid Valve #2 - Sends the refrigerant to the evaporator if DEFROST Mode is used when heating.
9.
3-Way Solenoid Valve #1 - Bypasses the refrigerant to chiller if refrigerant accumulation in the outer condenser is detected.
[Cooling]

1.
Outer Condenser - Condenses high temp-high pressure gas refrigerant and transforms it into high temp-high pressure liquid refrigerant.
2.
3-Way Valve #2 - Directs refrigerant flow to expansion valve when A/C is operating.
3.
Expansion Valve - Instantly expands refrigerant to create low temp-low pressure gas.
4.
Evaporator - Operates blower fan to cool the air passing through the evaporator pin while the refrigerant in foggy state is transformed into gas (surrounding area gets cold).
5.
Accumulator - Separates gas/liquid so that only gas state refrigerant can flow into the compressor.
6.
Electric Compressor - Compressor is operated by electric motor. Converts low temp-low pressure gas refrigerant into high temp-high pressure gas and sends it to inner condenser.
7.
Inner Condenser - Condenses high temp-high pressure gas refrigerant and transforms it into high temp-high pressure liquid refrigerant.
8.
2-Way Solenoid Valve #1 - Does not expand but circulates refrigerant when A/C is operating.
9.
2-Way Solenoid Valve #2 - Prevents refrigerant from flowing into evaporator.
10.
3-Way Solenoid Valve #1 - Circulates refrigerant to outer condenser.
Heat Pump
...

Refrigerant Direction Control Valve Components and Components Location
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