It’s not every project write-up that opens with a sentence like “I had this TURBOVAC 50 turbomolecular pump laying around…”, but then again not every write-up comes from someone with a lab as stuffed ...

The primary job of most bilge pumps on most boats is to clear infliction water from the bilges (https://en.wikipedia.org/wiki/Bilge_pump). A bilge pump is a key piece ...

Heat pumps are taking the world by storm, and for good reason. Not only are they many times more efficient than electric heaters, but they can also be used to provide cooling in the summer. Efficiency ...

Beyond the wheel, the most important mechanical equipment serving humanity is the centrifugal pump. Centrifugal pumps make modern quality of life possible. Turn on a faucet and a centrifugal turbine ...

Now, the water level begins to decrease and the shorter sensor will be no longer in contact with the water, but IC1C output will be hold high by the signal return to pin #5 of IC1B, so the pump will ...

Researchers have utilized measured data from a small energy community on a Finnish university campus to simulate its operation under various control strategies. The first control strategy prioritizes ...

Article 695 covers the electric power sources and interconnecting circuits for electric motor-driven fire pumps. It also covers switching and control equipment dedicated to fire pump drivers. Article ...

Standpipe systems can be found in occupancies that range from apartments to high-rises to large commercial buildings. These systems are relatively simple, yet most of the breadth of knowledge that ...

Fig. 1. The minimum electrical requirements for installing fire pumps are found in Article 695. A general philosophy for most electrical installations is to provide ...