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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. 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 ...

  4. Glossary of HVAC terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_HVAC_terms

    heating coil A heating coil is the part of the system that conducts heat. It allows electricity to act as fire. heat exchanger A heat exchanger is the part of the system that transfers heat from the hot parts of the machine or a system to the cold parts of the machine or system. heat gain heat load heat loss

  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. Refrigeration - Wikipedia

    en.wikipedia.org/wiki/Refrigeration

    That results in a mixture of liquid and vapour at a lower temperature and pressure as shown at point 5. The cold liquid-vapor mixture then travels through the evaporator coil or tubes and is completely vaporized by cooling the warm air (from the space being refrigerated) being blown by a fan across the evaporator coil or tubes.

  7. Air source heat pump - Wikipedia

    en.wikipedia.org/wiki/Air_source_heat_pump

    The main components of a split-system (called split as there are both inside and outside coils) air source heat pump are: An outdoor evaporator heat exchanger coil, which extracts heat from ambient air; One or more [9] indoor condenser heat exchanger coils. They transfer the heat into the indoor air, or an indoor heating system such as water ...

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