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 ...

Bob and Tim are on their way to a spring start up for a chiller in an office building. It is a 100-ton water cooled reciprocating chiller with the chiller in the basement and the cooling tower on the ...

When looking for ways to maximize the energy efficiency of a chilled water system, it’s common to pay attention to the chiller itself - and all too common to overlook other opportunities. Production ...

The University of Miami Central Energy Plant represents one of the largest facilities of its kind in South Florida. Among its features: three high-efficiency, variable-flow 3900-ton chillers piped in ...

Although absorption chillers were introduced over a century ago, today it is worth examining what’s new and what’s next while dispelling some old misconceptions. Absorption chiller technology has ...

Gas turbines have been widely deployed in industrial applications for decades and are used to produce the power to drive propellers, pumps and compressors. In particular, gas turbines are favored by ...

Given the size of today’s sport-fishing boats, the large majority of builders use chilled-air systems to cool their boats. This type of system works by circulating cooled fresh water through a closed ...

Conventional district heating systems are generally designed around the load. However, an alternate approach would be to design around potential heat sources, including the waste heat from power ...