Does this mean I canât ever say âciao?â Of course the answer to this is no. Youâll hear ciao being said all over Italy â itâs an incredibly common greeting throughout the country. But if youâre paying closer attention, youâll see that itâs almost always used between people who know one another or are in the same peer group.
In building construction, a plenum (pronounced PLEH-nuhm, from Latin meaning full) is a separate space provided for air circulation for heating, ventilation, and air-conditioning (sometimes referred to as HVAC) and typically provided in the space between the structural ceiling and a drop-down ceiling.n buildings with computer installations, the plenum space is often used to house connecting communication cables. Because ordinary cable introduces a toxic hazard in the event of fire, special plenum cabling is required in plenum areas.
Ad. When used in engines and other machinery, the plenum chamber acts as an exhaust chamber to help cool the engine or motor. A positive-pressure plenum space is situated between the air intake assembly and the valves on the engine.Fresh air remains in the plenum until the valves open, allowing air into the engine.hese 10 facts about space will blow your mind. A plenum chamber is essentially a type of ventilation or air transfer system. These air-filled chambers can be found on vehicles and machinery, or in the floors and ceilings of a room.