The method involves measuring (E2) temperature of external air flow and comparing the temperature with a temperature threshold. Moisture content of external air flow is measured (E4) if the temperature is lower than or equal to the threshold. Speed of exte...

The system has an evaporator wit a surface, at least one infrared sensor for detecting the temperatures of several regions of the evaporator surface, a processor for determining whether the detected temperature at one or more regions is below a threshold t...

A temperature sensor (42) is disposed to sense refrigerant temperature discharging from the evaporator of a vehicle air conditioning system. The temperature is averaged over the sampling interval and is inputted to an electronic controller. The controller ...