An air-conditioning control system includes an air-conditioning device mounted in a host vehicle, a determination unit mounted in the host vehicle or a server and configured to determine whether a boarding position at which a boarding event in which an occupant boards the host vehicle occurs is a point with a predetermined attribute, and a control unit mounted in the host vehicle and configured to control the air-conditioning device based on a determination result from the determination unit. The control unit sets a ventilation capacity of the air-conditioning device to be greater when the determination unit determines that the boarding position is a point with the predetermined attribute than when the determination unit does not determine that the boarding position is a point with the predetermined attribute.

An air conditioner system for electric motor vehicles reduces the thermal load on the air conditioner system during air conditioning using a desiccant-coated heat exchanger and improves energy efficiency thereof using waste heat obtained while cooling electric devices during regeneration of a desiccant-coated heat exchanger.

A reheating process for operating a cooling system having a heat pump function for a motor vehicle. The reheating process includes steps of determining a heat differential value by comparing a heat emission actual value at the heating register to a heat emission target value, and adjusting at least one operating setting of the cooling system, so that the power consumption in the cooling system is increased if the heat differential value is greater than 0 and less than a heat differential threshold value.

A heating, ventilation, and air-conditioning device includes: a heating part disposed in a windshield glass of a vehicle and configured to heat the windshield glass; a collection part configured to collect state information on a state of the windshield glass and environment information on internal and external environments of the vehicle; and a control part. The control part is configured to determine a defrosting or dehumidifying mode for the windshield glass based on the state information or the environment information collected by the collection part and to control an operation of the heating part depending on the determined defrosting or dehumidifying mode.

An air conditioner is configured to be switchable between a heating mode and a cooling mode. In the cooling mode, a high-temperature heat medium circulates between a high-pressure side refrigerant-heat medium heat exchanger and a high-temperature heat medium-outside air heat exchanger in a state where a refrigerant circulates in an air-cooling heat exchanger. In the heating mode, the high-temperature heat medium circulates between the high-pressure side refrigerant-heat medium heat exchanger and an air-heating heat exchanger, while a low-temperature heat medium circulates between a low-pressure side refrigerant-heat medium heat exchanger and a low-temperature heat medium-outside air heat exchanger, in a state where the refrigerant circulates in the low-pressure side refrigerant-heat medium heat exchanger.

A vehicle cooling/heating system includes a coolant line in which coolant is circulated between a heat source component of a vehicle that provides waste heat and a chiller and a refrigerant line in which refrigerant is circulated through a compressor, a condenser, an expansion valve, and an evaporator. The refrigerant line performs indoor cooling through the evaporator. A controller controls the coolant line such that, during a king mode in which it is necessary to dry the evaporator, the coolant in the coolant line is circulated or not circulated through the heat source component and the chiller; and controls the coolant line such that the refrigerant in the refrigerant line flows in an order of the compressor, the evaporator, and the chiller.

A heat pump system for a vehicle includes an air conditioner circulating a refrigerant through a refrigerant line, a coolant circulation device circulating a coolant through a coolant line, a first chiller connected to the coolant circulation device through the coolant line, connected to the refrigerant line through a first refrigerant connection line, and heat-exchanges a selectively introduced coolant with a refrigerant supplied from the air conditioner to control a temperature of a coolant, and a second chiller connected to the coolant circulation device through the coolant line, connected to a second refrigerant connection line so that a refrigerant is supplied from the air conditioner, and increases a temperature of a refrigerant by heat-exchanging a coolant and a refrigerant so that waste heat is recovered from a coolant selectively flowing thereinto, wherein the air conditioner includes a gas injection part that bypasses some of a refrigerant passing through a condenser to a compressor to increase a flow rate of a refrigerant circulating in the refrigerant line.

A system is for preventing molding on an evaporator associated with a vehicle air conditioning system for supplying conditioned air to a vehicle passenger cabin. The system includes a blower for selectively directing airflow over the evaporator and a controller for controlling the blower based on a sensed humidity adjacent the evaporator. The controller may also control a pump for circulating warm coolant from an engine cooling system to a heater core to warm the airflow directed to the evaporator by the blower, and thus contribute to the drying provided. Related methods are also disclosed.

A vehicle air conditioner is capable of selecting and changing an optimum operation mode so that a desirable air conditioning performance can be exerted on conditions such as an environment and a set temperature. A controller changes and executes at least one of a heating mode, a dehumidifying and heating mode, a dehumidifying and cooling mode, and a cooling mode. In the dehumidifying and heating mode, the controller shifts to the dehumidifying and cooling mode on the basis of a situation where heat absorption in a heat absorber (9) runs short or heat radiation in a radiator (4) becomes excessive, and also in this dehumidifying and cooling mode, the controller shifts to the dehumidifying and heating mode on the basis of a situation where the heat radiation in the radiator (4) runs short.

There is disclosed an air-conditioning apparatus for vehicle which is capable of selecting an appropriate operation mode while inhibiting the operation mode from being unnecessarily changed, and achieving rapid and stable vehicle interior air conditioning. A controller has respective operation modes of a heating mode, a dehumidifying and heating mode, a dehumidifying and cooling mode, and a cooling mode, and selects and executes these operation modes. The controller has a dehumidifying and heating mode maximum radiator temperature MAP and a dehumidifying and cooling mode maximum radiator temperature MAP. The controller selects an operation mode in which a radiator target temperature TCO is achievable by heat radiation in a radiator 4 with reference to each MAP, on startup or at a time of change of the operation mode.