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  2. Heating, ventilation, and air conditioning - Wikipedia

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

    Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality.

  3. Internally grooved copper tube - Wikipedia

    en.wikipedia.org/wiki/Internally_grooved_copper_tube

    To use smaller tubes instead of conventional-sized tubes in air conditioners, heat exchangers must be redesigned including the fin and tube circuits. [12] Design optimization requires the use of computational fluid dynamics to analyze airflow around the tubes and fins, as well as computer simulations of refrigerant flow and temperatures inside the tubes.

  4. Dielectric heating - Wikipedia

    en.wikipedia.org/wiki/Dielectric_heating

    In agriculture, RF dielectric heating has been widely tested and is increasingly used as a way to kill pests in certain food crops after harvest, such as walnuts still in the shell. Because RF heating can heat foods more uniformly than is the case with microwave heating, RF heating holds promise as a way to process foods quickly. [8]

  5. Friedrich Air Conditioning - Wikipedia

    en.wikipedia.org/wiki/Friedrich_Air_Conditioning

    In 2012, the entry-level Uni-Fit (thru-the-wall units) and Chill (window units) lines of room air conditioners were introduced. The Uni-Fit and Chill were manufactured by LG and produced in China. However, both lines were revamped in 2019 and 2021, respectively, at which point TCL began to produce them. They are low-cost alternatives to the ...

  6. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    Air source heat pumps, which can be used for heating as well as cooling, are becoming increasingly common in cooler climates. Air conditioners can reduce mortality rates due to higher temperature. [7] According to the International Energy Agency (IEA) 1.6 billion air conditioning units were used globally in 2016. [8]

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