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2. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Dehumidification (air drying) in an air conditioning system is provided by the evaporator. Since the evaporator operates at a temperature below the dew point, moisture in the air condenses on the evaporator coil tubes. This moisture is collected at the bottom of the evaporator in a pan and removed by piping to a central drain or onto the ground ...

3. Evaporator - Wikipedia

   en.wikipedia.org/wiki/Evaporator

   An evaporator is a type of heat exchanger device that facilitates evaporation by utilizing conductive and convective heat transfer, which provides the necessary thermal energy for phase transition from liquid to vapour. Within evaporators, a circulating liquid is exposed to an atmospheric or reduced pressure environment causing it to boil at a ...

4. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   This is partly because ice forms on the outdoor unit's heat exchanger coil, which blocks air flow over the coil. To compensate for this, the heat pump system must temporarily switch back into the regular air conditioning mode to switch the outdoor evaporator coil back to the condenser coil, to heat up and defrost. Therefore, some heat pump ...

5. Heat exchanger - Wikipedia

   en.wikipedia.org/wiki/Heat_exchanger

   For cooling coils, chilled water and refrigerant are most common. Chilled water is supplied from a chiller that is potentially located very far away, but refrigerant must come from a nearby condensing unit. When a refrigerant is used, the cooling coil is the evaporator, and the heating coil is the condenser in the vapor-compression ...

6. Economizer - Wikipedia

   en.wikipedia.org/wiki/Economizer

   An internal heat exchanger is simply a heat exchanger that uses the cold gas leaving the evaporator coil to cool the high-pressure liquid that is headed into the beginning of the evaporator coil via an expansion device. The gas is used to chill a chamber that normally has a series of pipes for the liquid running through it.

7. College Football Playoff: Which teams are in position for the ...

   www.aol.com/sports/college-football-playoff...

   The College Football Playoff cake is getting close to baked, which means much of the angst and anger of the past few weeks over hypothetical and projected scenarios have proved a waste of time.

8. NFL Winners and Losers: If NFL cares about player safety ...

   www.aol.com/sports/nfl-winners-losers-nfl-cares...

   It was the type of hit the NFL has been trying to remove from the game for years. Daryl Johnston, the former Dallas Cowboys fullback and longtime Fox analyst, said the hit showed disrespect for a ...

9. Heater core - Wikipedia

   en.wikipedia.org/wiki/Heater_core

   In a car equipped with air conditioning, outside air, or cabin air if the recirculation flap has been set to close the external air passages, is first forced, often after being filtered by a cabin air filter, through the air conditioner's evaporator coil. This can be thought of as a heater core filled with very cold liquid that is undergoing a ...