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2. Internally grooved copper tube - Wikipedia

   en.wikipedia.org/wiki/Internally_grooved_copper_tube

   Grooved coils facilitate more efficient heat transfer than smooth coils. [1] [2] Small diameter coils have better rates of heat transfer than conventionally-sized condenser and evaporator coils with round copper tubes and aluminum or copper fin that have been the standard in the HVAC industry for many years. Small diameter coils can withstand ...

3. Copper in heat exchangers - Wikipedia

   en.wikipedia.org/wiki/Copper_in_heat_exchangers

   Today, steam, evaporator, and condenser coils are made from copper and copper alloys. [3] These heat exchangers are used in air conditioning and refrigeration systems, industrial and central heating and cooling systems, radiators, hot water tanks, and under-floor heating systems.

4. Air handler - Wikipedia

   en.wikipedia.org/wiki/Air_handler

   Small air handlers, for local use, are called terminal units, and may only include an air filter, coil, and blower; these simple terminal units are called blower coils or fan coil units. A larger air handler that conditions 100% outside air, and no recirculated air, is known as a makeup air unit ( MAU ) or fresh air handling unit ( FAHU ).

5. Thermal expansion valve - Wikipedia

   en.wikipedia.org/wiki/Thermal_expansion_valve

   A thermal expansion valve is a key element to a heat pump; this is the cycle that makes air conditioning, or air cooling, possible.A basic refrigeration cycle consists of four major elements: a compressor, a condenser, a metering device and an evaporator.

6. 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 ...

7. Patriots fire Jerod Mayo after final win loses franchise No ...

   www.aol.com/patriots-fire-jerod-mayo-final...

   Bill Belichick's replacement has lasted just one season.. The New England Patriots have fired first-year head coach Jerod Mayo after going 4-13 in his first and only season, including a Week 18 ...