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  2. Auto-defrost - Wikipedia

    en.wikipedia.org/wiki/Auto-defrost

    Instead, they use an independent cooling system (for example: an evaporator coil with a defrost heater and a circulating fan in the freezer and a cold-plate or open-coil evaporator in the refrigerator. "Frost-Free" refrigerator/freezer units usually use a heating element to defrost their evaporators, a pan to collect and evaporate water from ...

  3. Evaporator - Wikipedia

    en.wikipedia.org/wiki/Evaporator

    An industrial evaporator used in a chemical plant in Turkey. 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 ...

  4. 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 ...

  5. 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.

  6. Dehumidifier - Wikipedia

    en.wikipedia.org/wiki/Dehumidifier

    They work by drawing moist air over a refrigerated evaporator with a fan. There are 3 main types of evaporators. They are coiled tube, fin and tube, and microchannel technology. The cold evaporator coil of the refrigeration device condenses the water, which is removed, and then the air is reheated by the condenser coil. The now dehumidified, re ...

  7. Cromer cycle - Wikipedia

    en.wikipedia.org/wiki/Cromer_cycle

    Third, this is accomplished with a higher average evaporator temperature. Compare the midpoint of the evaporator's temperature, line 1 to 4’, to the midpoint of the Cromer cycle's evaporator's temperature, line 2 to 3. These lines represent the work done by the coil on the air stream (its change in enthalpy). This is significant because ...

  8. California health department reports possible bird flu case ...

    www.aol.com/news/california-health-department...

    (Reuters) -California's public health department reported a possible case of bird flu in a child with mild respiratory symptoms on Tuesday, but said there was no evidence of human-to-human ...

  9. Vapor-compression evaporation - Wikipedia

    en.wikipedia.org/wiki/Vapor-compression_evaporation

    A vapor-compression evaporator, like most evaporators, can make reasonably clean water from any water source. In a salt crystallizer, for example, a typical analysis of the resulting condensate shows a typical content of residual salt not higher than 50 ppm or, in terms of electrical conductance , not higher than 10 μS/cm .