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.
Every air conditioning system needs a refrigerant (also called a coolant) that actually creates the cool air -- that's the role of Freon. As necessary as Freon is to the optimal performance of your your air conditioner, you do not want to handle a potential Freon problem yourself.If you do believe your air conditioner's refrigerant lines might need recharging, call a professional to do it.In fact, it's probably a good idea to call a professional to inspect your air conditioning system just before the beginning of each cooling season.s necessary as Freon is to the optimal performance of your your air conditioner, you do not want to handle a potential Freon problem yourself. If you do believe your air conditioner's refrigerant lines might need recharging, call a professional to do it.