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  2. Glossary of HVAC terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_HVAC_terms

    The higher the unit's SEER rating the more energy efficient it is. smoke damper A damper or adjustable louver designed to augment the ventilation of a space during a fire. split system A split system is the combination of an outdoor unit and an indoor unit. This is the most common type of system. superheat

  3. Electric fireplace - Wikipedia

    en.wikipedia.org/wiki/Electric_fireplace

    An electric fireplace. An electric fireplace is an electric heater that mimics a fireplace burning coal, wood, or natural gas.Electric fireplaces are often placed in conventional fireplaces, which can then no longer be used for conventional fires. [1]

  4. Electric arc furnace - Wikipedia

    en.wikipedia.org/wiki/Electric_arc_furnace

    Industrial arc furnaces range in size from small units of approximately one-tonne capacity (used in foundries for producing cast iron products) up to about 400-tonne units used for secondary steelmaking. Arc furnaces used in research laboratories and by dentists may have a capacity of only a few dozen grams. Industrial electric arc furnace ...

  5. IEC 62056 - Wikipedia

    en.wikipedia.org/wiki/IEC_62056

    Most metering units have special modes for calibration and resetting meter registers. These modes are usually protected by anti-tampering features such as switches that sense if the meter enclosure has been opened. The HHU may also be given limited rights to set or reset certain parameters in the meter. The handheld unit then sends a sign-off ...

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