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  2. Is It Time for a Furnace Upgrade? 10 Warning Signs to ... - AOL

    www.aol.com/time-furnace-upgrade-10-warning...

    6. Continuously Cycles On and Off. Generally, a furnace activates when the thermostat detects that the home's temperature has dropped below the set point, running until it reaches the desired ...

  3. Texas City refinery explosion - Wikipedia

    en.wikipedia.org/wiki/Texas_City_Refinery_explosion

    The gas fueling the furnace was shut off, but the raffinate feed into the splitter tower was not. The operators believed the level transmitter reading which was now down to 78% (7.9 feet [2.4 m]) but the fluid level in the 170-foot (52 m) tall splitter tower had now reached 158 feet (48 m).

  4. Furnace (central heating) - Wikipedia

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

    The fourth category of furnace is the high-efficiency condensing gas furnace. High efficiency condensing gas furnaces typically achieve between 90% and 98% AFUE. [3] A condensing gas furnace includes a sealed combustion area, combustion draft inducer and a secondary heat exchanger. The primary gain in efficiency for a condensing gas furnace, as ...

  5. Staged combustion - Wikipedia

    en.wikipedia.org/wiki/Staged_combustion

    The technique involves shutting off the fuel flow from one burner or more to create fuel-rich and fuel-lean zones, achieving some NO x emission control (10%). The technique is not widely used in pulverized coal-fired plants (2 units, 350 MW e). Another method of fuel staged combustion is fuel biasing.

  6. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    Such a system contains a boiler, furnace, or heat pump to heat water, steam, or air in a central location such as a furnace room in a home, or a mechanical room in a large building. The heat can be transferred by convection, conduction, or radiation. Space heaters are used to heat single rooms and only consist of a single unit.

  7. 'Remington is Ilion': Village must find future without ... - AOL

    www.aol.com/remington-ilion-village-must-future...

    Ilion and Herkimer County are in the early stages of trying to figure out how to move forward without 207-year-old Remington Arms ... lay off all of its not quite 300 workers ... RemArms furnace ...

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