Yesterday I walked up on one of our managers who was talking to a junior tech diagnosing an intermittent controls issue on a pool heat pump. In the background, you could hear an extremely loud ...

My June 7 column, “Refrigerant Migration,” dealt with refrigerant migrating back to the compressor’s crankcase during the off cycle. This migration of refrigerant was due to a pressure difference ...

Automobiles and commercial vehicles originally sported naturally aspirated engines. Back in the 1920s, the Mercedes 6/25 PS and Mercedes 10/40 PS introduced the world of road-going cars to Roots-type ...

Installing a recycle valve in parallel with the antisurge valve of a turbine-driven multistage (low pressure/high pressure) centrifugal compressor, in combination with control system modifications, ...

The business end of your basic air system consists of an air compressor, a governor to control the load and unload cycles of the compressor, three air reservoirs, and an air dryer. There’s about a ...

Installing a recycle valve in parallel with the antisurge valve of a turbine-driven multistage (low pressure/high pressure) centrifugal compressor, in combination with control system modifications, ...