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 ...

An HVAC system’s energy efficiency is only as good as the engineering firm that monitors and upgrades it. Hemant Mehta’s WM Group must be doing something right because he and his team have been ...

A group of researchers from China's Beijing University of Civil Engineering and Architecture has conceived a new control strategy for variable water temperature and variable flow in PV-driven heat ...