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  2. 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.

  3. Grate heater - Wikipedia

    en.wikipedia.org/wiki/Grate_heater

    The ideal tubular grate heater would be built like an ideal heat exchanger with as large a surface area as possible with material suitable to minimize the heaters thermal deterioration yet provide good thermal conductivity with a high airflow rate, similar to your home furnace. However the unique environment of a fireplace and the burning of ...

  4. Category:Heat exchangers - Wikipedia

    en.wikipedia.org/wiki/Category:Heat_exchangers

    Pages in category "Heat exchangers" The following 39 pages are in this category, out of 39 total. This list may not reflect recent changes. ...

  5. Air source heat pump - Wikipedia

    en.wikipedia.org/wiki/Air_source_heat_pump

    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-filled radiators or underfloor circuits and a domestic hot water tank.

  6. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    External heat exchanger of an air source heat pump. An air source heat pump can be used to air condition the building during hot weather, and to warm the building using heat extracted from outdoor air in cold weather. Air-source heat pumps are generally uneconomic for outdoor temperatures much below freezing.

  7. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    The second category of furnace is the forced-air having atmospheric burner style with a cast-iron or sectional steel heat exchanger. Through the 1950s and 1960s, this style of furnace was used to replace the big, natural draft systems, and was sometimes installed on the existing gravity duct work.

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