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2. Refrigerant - Wikipedia

   en.wikipedia.org/wiki/Refrigerant

   Refrigerant. A refrigerant is a working fluid used in the refrigeration cycle of air conditioning systems and heat pumps where in most cases they undergo a repeated phase transition from a liquid to a gas and back again. Refrigerants are heavily regulated because of their toxicity and flammability [ 1 ] and the contribution of CFC and HCFC ...

3. 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. As a refrigerant passes through a circuit containing these four elements, air ...

4. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   A ground source heat pump (also geothermal heat pump) is a heating/cooling system for buildings that use a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons. Ground-source heat pumps (GSHPs) – or geothermal heat pumps (GHP), as they are ...

5. House passes bill blocking Biden admin attempt to require two ...

   www.aol.com/news/house-passes-bill-blocking...

   A Tesla Model 3 charges at a ChargePoint electric vehicle charging station in Rhinebeck, New York, on Sept. 3. The amendment was passed with bipartisan support, with eight Democrats voting for the ...

6. Airsoft gun - Wikipedia

   en.wikipedia.org/wiki/Airsoft_gun

   An airsoft gun made by Celcius Technology (Hong Kong). This training weapon model is a replica of the M4A1 and also has a G&G Trijicon ACOG scope replica. Airsoft gun manufacturer Systema Engineering (PTW) developed a line of airsoft guns and accessories intended for military and law enforcement training.

7. Here’s how Asheville and North Carolinians are showing up for ...

   www.aol.com/news/asheville-north-carolinians...

   He’s designated eight rooms for use of their showers, a first aid station, a charging station for cellphones and has started to cook hundreds of hot meals. “There’s no greed here, no panic ...