Passenger Compartment Heating With Heat From The Electric Drive And The Outside Air

WARNING: This page is about a different car, the 2021 Jaguar I-Pace, 2020 Jaguar I-Pace, and 2019 Jaguar I-Pace. However, it is still accessible from the selected car via links, so may be relevant.

Heat From The Electric Drive

The Air Conditioning (A/C) system uses the refrigerant for heat transfer to the climate control system and then to the passenger compartment. In the electric drive cooler, heat is moved from the electric drive coolant to the refrigerant. The refrigerant changes state from a liquid to a vapor. The electric A/C compressor circulates the refrigerant vapor to the climate control indirect condenser. In the climate control indirect condenser, the change of state of the refrigerant is reversed and the vapor is condensed into liquid refrigerant. This releases the heat from the refrigerant and transfers it to the climate control coolant.

For additional information, Refer to: ELECTRIC DRIVE TEMPERATURE CONTROL .

The climate control coolant is circulated through the climate control system to the heater core in the climate control assembly. The heat is transferred from the climate control coolant to the passenger compartment air to heat the passenger compartment.

For additional information, refer to: HEATING AND VENTILATION .

Heat From The Outside Air

The Air Conditioning (A/C) system also uses heat from the outside air to provide heat for the passenger compartment. This uses the recovery heat exchanger as an evaporator to recover heat from the outside air. The heat from the outside air changes the state of the refrigerant from a liquid to a vapor. The electric A/C compressor circulates the refrigerant vapor to the climate control indirect condenser. In the climate control indirect condenser the change of state of the refrigerant is reversed and the vapor is condensed into liquid refrigerant. This releases the heat from the refrigerant and transfers it to the climate control coolant.

Heating for the Passenger Compartment

The heat from the refrigerant is transferred to the climate control coolant in the climate control indirect condenser. The climate control coolant is circulated by the climate control coolant pump to the heater core in the climate control assembly. The blower blows air through the heater core to transfer the heat to the passenger compartment air and heat the passenger compartment. The heat from the outside air is used to heat the passenger compartment under the following conditions:

The vehicle is stationary.
Insufficient heat is available for the electric drive temperature control system alone.

Using both, the heat from the electric drive temperature control system and the outside air reduces the time that the High Voltage (HV) interior heater operates. This improves the efficiency of the passenger compartment heating and increases the vehicle travel distance particularly in cold weather.

For additional information, refer to: HEATING AND VENTILATION .