A heating, ventilation, and air condition (HVAC) unit may include a casing, an evaporator, a heater core, and a first damper. The casing may define a front airflow passageway, a rear airflow passageway having an inlet, and first and second outlets in fluid communication with the rear airflow passageway. The evaporator and the heater core may be disposed within the casing. The first damper may be disposed within the casing between the evaporator and the heater core and movable between a first position in which airflow is directed to the heater core and a second position in which airflow is directed away from the heater core. Airflow across the evaporator from the front airflow passageway to the rear airflow passageway is directed to the first and second outlets when the first damper is moved from the first position toward the second position.

A heating, ventilation, and air condition (HVAC) unit may include a casing, an evaporator, a heater core, and a first damper. The casing may define a front airflow passageway, a rear airflow passageway having an inlet, and first and second outlets in fluid communication with the rear airflow passageway. The evaporator and the heater core may be disposed within the casing. The first damper may be disposed within the casing between the evaporator and the heater core and movable between a first position in which airflow is directed to the heater core and a second position in which airflow is directed away from the heater core. Airflow across the evaporator from the front airflow passageway to the rear airflow passageway is directed to the first and second outlets when the first damper is moved from the first position toward the second position.

A humidity detector a humidity sensor detecting a relative humidity of an air inside a sensor case housing the humidity sensor. The humidity detector has an air volume obtaining section, a flow direction obtaining section, a setting section, and a correction section. The air volume obtaining section obtains air volume information correlated with an air volume of the air flowing around the humidity sensor. The flow direction obtaining section obtains flow direction information correlated with a flow direction of the air flowing around the humidity sensor. The setting section sets correction factors configuring a dynamic compensator based on the air volume information and the flow direction information. The dynamic compensator compensates for a response delay of the humidity sensor. The correction section corrects a detection value, which is detected by the humidity sensor, by using the dynamic compensator to obtain the relative humidity of the air.

A vehicle air conditioning apparatus is provided that can extend the mileage of a vehicle by reducing the power consumed by the operation of a compressor and a heater. When a required quantity of heating Q_req is acquired, the minimum power sharing ratio between quantity of heat release Q_hpof a water-refrigerant heat exchanger 22 and quantity of heat release Q_htrof a water heater 32 is calculated, which allows the power consumption W_total to be minimized, and a compressor 21 and the water heater 32 are operated based on the result of the calculation.

A controller of an airflow control system is configured to determine a target position of a door of an airflow control assembly, a first flow rate of a first airflow from a recirculated air blower, and a second flow rate of a second airflow from a fresh air blower based at least in part on a target total airflow rate into an interior of a and a target fresh airflow rate into the interior of the cab. The fresh air blower receives a mixture of fresh air and recirculated air based on a position of the door. The controller is further configured to instruct the airflow control assembly to move the door to the target position, instruct the recirculated air blower to output the first airflow at the first flow rate, and instruct the fresh air blower to output the second airflow at the second flow rate.

An airflow control system of a work vehicle includes a cool box input flow passage configured to only receive a cooling system output airflow and to provide only the cooling system output airflow to the cool box. In addition, the airflow control system includes a cool box input valve fluidly coupled to the cool box input flow passage. The cool box input valve is configured to control the cooling system output airflow through the cool box input flow passage. The airflow control system also includes a controller communicatively coupled to the cool box input valve. The controller is configured to instruct the cool box input valve to selectively transition to an open position, a closed position, and a position between the open and closed positions to control a temperature within an interior of the cool box.

An airflow control system of a work vehicle includes a front vent assembly and a front blower configured to provide a front airflow to the front vent assembly. In addition, the airflow control system includes a rear vent assembly and a rear blower configured to provide a rear airflow to the rear vent assembly. Furthermore, the airflow control system includes an air distribution system fluidly coupled to the front blower and to the rear blower. The airflow control system also includes a sensor configured to output a signal indicative of a position of the sun relative to the work vehicle. In addition, the airflow control system includes a controller communicatively coupled to the front blower, the rear blower, and the sensor. The controller is configured to control the front blower and the rear blower based at least in part on the signal.

A magnetic refrigeration system constructed in such a way that a refrigerant transfer part transfers refrigerant from a first refrigerant discharge part of one refrigerant port to a first refrigerant circulation circuit after a magnetic field is applied to a magnetic working material by a magnetic field applying and removing part and that the refrigerant transfer part transfers refrigerant from a second refrigerant discharge part of other refrigerant port to a second refrigerant circulation circuit after the magnetic field is removed from the magnetic working material by the magnetic field applying and removing part.

A device and a method for a controlling compressor of vehicles may include a cabin temperature sensor, an outdoor temperature sensor, an evaporator temperature sensor detecting a temperature of a cooling medium in an evaporator, an engine speed sensor detecting rotation speed of an engine, and a throttle position sensor detecting a throttle opening, an air conditioning system including a condenser condensing and liquefying the cooling medium, an evaporator, the compressor, a temperature control door controlling a temperature of an air flowed in a cabin, an intake door selectively flowing an inner air or an outer air in the cabin, a blower blowing the air to the intake door, and a controller determining acceleration mode and an allowable temperature at each acceleration mode when an acceleration condition occurs, and decreasing an operation of the compressor according to a difference between the evaporator temperature and the allowable temperature.

An electrified vehicle includes a vehicle body establishing an interior space, a battery pack mounted within the interior space, and a battery thermal management system including a control module configured to command evacuation of hot air within the interior space if an external temperature of the battery pack exceeds a predefined temperature threshold.