Various embodiments of a parking cooler are provided which may be operated from battery power, for example during engine off operation. Further, the parking cooler or air conditioning system may have varying cooling capacities based on operating modes in order to maximize performance or maximize battery life. The parking cooler may include one or more condensers and a housing to accommodate such variation of cooling capacity.

Systems and methods for operating a heater for a passenger cabin of a vehicle. In one example, fan speed of an evaporator cooling fan is adjusted to improve heating efficiency. In particular, fan speed is incrementally increased and maintained at the higher speed if output power of a compressor is reduced by more than an amount of power used to incrementally increase the fan speed.

A climate control system including an air controller switchable between fresh air, recirculated air, and partial recirculated air modes is disclosed. The system further includes a control module connected to the controller and a link operatively connecting the washer fluid system and the module. When the washer fluid system is activated, the module switches the controller from the fresh air mode to the recirculated air mode, preventing washer fluid odors from entering the vehicle cabin while the washer fluid system is activated. The module can also selectively switch the air controller between fresh, recirculated, and partial recirculated air modes based on condition inputs. Non-limiting examples of condition inputs include a fog look-up table, wet bulb level, humidity level, air quality level, and temperature level. The module directs the air controller to switch to the fresh air mode based on information generated by one or more of the condition inputs.

In an embodiment, an apparatus includes a processor including logic to determine from data received from one or more sensors, whether the apparatus is in physical contact with a user. The logic is further to set a power management policy of the apparatus based on a processor context, where the processor context is determined based at least in part on whether the apparatus is in physical contact with the user, and where the power management policy is used by the logic to determine a level of power consumption at which to operate the processor. Other embodiments are described and claimed.

A system and method for controlling a transport heating, ventilation, and air conditioning (HVAC) system having a fresh air intake is disclosed. The fresh airflow intake system includes a fresh air damper configured to regulate a flow of fresh air into the transport HVAC system, an evaporator fan having at least a high-speed mode and a low speed mode, and a controller. The controller is configured to determine whether a fresh air condition is met and increase a fresh airflow in response to determining the fresh air condition is met. The controller is further configured to increase an evaporator fan speed when the fresh airflow is increased.

A refrigeration system for a refrigerated cargo container includes two or more refrigeration circuits, each circuit configured to cool a compartment of the refrigerated cargo container. Each circuit includes a compressor (38) to compress a gaseous flow of refrigerant, a gas cooler (40) in fluid communication with the compressor to cool the compressed flow of refrigerant, and an evaporator (46) located at the compartment and in fluid communication with the gas cooler and the compressor. An electrical generator (34) is operably connected to the compressor of each circuit to drive the compressors and a control system operably connected to the electrical generator and the two or more circuits. The control system is configured to calculate a maximum electrical power generated by the generator, calculate a target electrical load of the components of each circuit, and distribute the available electrical power from the generator to meet the target electrical load of each circuit.

Disclosed are climate systems for vehicles and methods for controlling the climate systems. In some implementations, a climate system includes: (1) a temperature sensor configured to measure a temperature within the compartment of the vehicle; (2) a first compressor powered by an engine of the vehicle to compress a refrigerant; (3) a second compressor driven by an electric motor to compress the refrigerant; and (4) a controller electrically coupled to the first compressor and the second compressor. The controller configured to: (1) calculate a thermal load of the compartment based on a difference between a desired temperature and a measured temperature; and, (2) based on the calculated load, selectively activate: (i) the engine, (ii) the first compressor, and/or (iii) the second compressor.

Methods and systems for controlling a transport refrigeration system are provided. In one instance, the method includes identifying an operational mode change request for a heat exchanger unit of the transport refrigeration system. The method also includes preparing the transport refrigeration system for the operational mode change of the heat exchanger unit, wherein preparing the transport refrigeration system for the operational mode change of the heat exchanger unit includes performing a load control action, the load control action preventing a power source of the transport refrigeration system from at least one of operating outside of a predefined revolutions per minute (RPM) bandwidth and exceeding a predefined power limit of the power source. Also, the method includes changing the operational mode of the heat exchanger unit; and removing the load control action.

A hybrid vehicle, an air conditioning system and a method for controlling the air conditioning system are provided. The air conditioning system includes: an electric compressor; a mechanical compressor, connected with the electric compressor in parallel; a power battery, connected with the electric compressor and configured to supply power to the electric compressor; an engine, connected with the mechanical compressor and configured to supply a power source to the mechanical compressor; an engine controller, connected with the engine and configured to start the engine when the mechanical compressor is to be started; a battery manager, connected with the power battery and configured to detect a state of charge of the power battery; and a controller, connected with the engine controller and the battery manager and configured to start the electric compressor and the mechanical compressor at different time according to the state of charge of the power battery.

A method for drying an evaporator of a vehicle air conditioner comprises closing an air duct after cooling of the vehicle air conditioner is stopped, operating the heating core and the fan, so as to generate, by means of the heating core and the fan, hot air which can circulate in the air duct. During circulation, the hot air carries away condensed water precipitated on a surface of the evaporator core for conversion into hot and humid air. The method includes directly venting the hot and humid air from the air duct to exterior environment, so that the evaporator core is dried. The method can implement the drying of the evaporator with high-efficiency and low energy consumption.