A method extends battery life of a battery powered indoor air quality (IAQ) sensor that includes a IAQ detector, a radio, the battery, and a microcontroller with a memory and a processor. The method includes detecting IAQ at predetermined intervals to prov...

A method is described for operating a refrigerant circuit that includes a compressor (10) with a driveshaft (18) and one or more gas bearings (22) for supporting the driveshaft. The method includes operating the refrigerant circuit in a first mode which in...

The present disclosure relates to a chiller system comprising: a refrigeration circuit comprising, in flow order, a compressor, a main condenser, an expansion valve and an evaporator; an auxiliary cooling branch configured to receive an auxiliary refrigera...