Variable frequency drives (VFDs), also known as variable speed drives (VSDs), are used to modulate the speed of motors in various applications, from hydronic water pumping to VAV fan units to vacuum ...

Once the condenser tubes are designed, selected, and purchased, the final step in a retubing project is to remove the old tubes and install the new ones. The success of this project is very dependent ...

The amount of liquid subcooling a refrigeration or air conditioning contains not only affects system capacity but also the effectiveness and capacity of expansion type metering devices. In today's ...