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  2. Fireplace fireback - Wikipedia

    en.wikipedia.org/wiki/Fireplace_fireback

    The primary functions of a fireback are to protect the wall at the back of the fireplace and radiate heat from the fire into the room. The protection was especially important where the wall was constructed of insubstantial material such as daub (a mud and straw mixture coating interwoven wooden wattles), brick or soft stone.

  3. Air preheater - Wikipedia

    en.wikipedia.org/wiki/Air_preheater

    The heating plate elements in this type of regenerative air preheater are also installed in a casing, but the heating plate elements are stationary rather than rotating. Instead the air ducts in the preheater are rotated so as to alternatively expose sections of the heating plate elements to the upflowing cool air. [1] [2] [3]

  4. Heating system - Wikipedia

    en.wikipedia.org/wiki/Heating_system

    A heating system is a mechanism for maintaining temperatures at an acceptable level; by using thermal energy within a home, office, or other dwelling. Typically, these systems are a crucial part of an HVAC (Heating, Ventilation, and Air Conditioning) system.

  5. Register (air and heating) - Wikipedia

    en.wikipedia.org/wiki/Register_(air_and_heating)

    A register is a grille with moving parts, capable of being opened and closed and the air flow directed, which is part of a building's heating, ventilation, and air conditioning (HVAC) system. The placement and size of registers is critical to HVAC efficiency. Register dampers are also important, and can serve a safety function.

  6. What did Hunter Biden do? Here are the convictions that led ...

    www.aol.com/did-hunter-biden-convictions-led...

    Hunter Biden has been convicted of federal gun charges and federal tax evasion charges. President Joe Biden pardoned his son alleging an unfair process.

  7. Why Is My Dog Not Responding to Treatment for His Red Skin? - AOL

    www.aol.com/why-dog-not-responding-treatment...

    Red ears, red eyelids, and red private parts, including anus and tummy. Behr is 19 months old and weighs 59.6 lbs. He previously weighed 64 lbs when he came out of training but has lost weight.

  8. Butterworth cover - Wikipedia

    en.wikipedia.org/wiki/Butterworth_Cover

    When the service opening is not in use, it is sealed by a removable cover plate, commonly referred to as a Butterworth cover. [4] Butterworth hatches are not the main access hatches, but are the servicing hatches, and are generally closed with a metal cover plate with a gasket that is fastened to the deck by a number of bolts which stick up ...

  9. Explainer-What charges does Luigi Mangione face over ... - AOL

    www.aol.com/news/explainer-charges-does-luigi...

    Luigi Mangione, the suspect in the Dec. 4 killing of UnitedHealth Group executive Brian Thompson, faces two separate sets of murder charges in state and federal court in New York. Federal ...