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  2. What should you set your heat to in the winter? Avoid ... - AOL

    www.aol.com/set-heat-winter-avoid-thermostat...

    A heating system that's running efficiently saves money. That means the cost for a professional to come to your home and inspect your unit (anywhere from $150 to $500, Consumer Reports estimates ...

  3. Unitized Group Ration - Wikipedia

    en.wikipedia.org/wiki/Unitized_Group_Ration

    The UGR-E is designed to provide hot meals where feeding a group with hot food would otherwise be unfeasible; unlike other UGRs, it uses a flameless ration heater and does not require a separate field kitchen. The UGR-E begins heating with the pull of a tab, and can fully heat a meal within 30 to 45 minutes.

  4. Fatigue Avoidance Scheduling Tool - Wikipedia

    en.wikipedia.org/wiki/Fatigue_Avoidance...

    The Fatigue Avoidance Scheduling Tool (FAST) was developed by the United States Air Force in 2000–2001 to address the problem of aircrew fatigue in aircrew flight scheduling. [2] FAST is a Windows program that allows scientists, planners and schedulers to quantify the effects of various work-rest schedules on human performance.

  5. Flameless ration heater - Wikipedia

    en.wikipedia.org/wiki/Flameless_ration_heater

    To heat a meal, the bag is first torn open, and a sealed food pouch is placed inside. About 1 US fluid ounce (30 mL) of water is then added to the bag, using the line printed on the bag as a marker. The chemical reaction begins immediately, and takes about 12 to 15 minutes to heat a food pouch to about 60 °C (140 °F).

  6. Furnace (central heating) - Wikipedia

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

    By comparison, most modern "warm air" furnaces typically use a fan to circulate air to the rooms of house and pull cooler air back to the furnace for reheating; this is called forced-air heat. Because the fan easily overcomes the resistance of the ductwork, the arrangement of ducts can be far more flexible than the octopus of old. In American ...

  7. Superheating - Wikipedia

    en.wikipedia.org/wiki/Superheating

    Superheating is an exception to this simple rule; a liquid is sometimes observed not to boil even though its vapor pressure does exceed the ambient pressure. The cause is an additional force, the surface tension, which suppresses the growth of bubbles. [4] Surface tension makes the bubble act like an elastic balloon.

  8. Convection oven - Wikipedia

    en.wikipedia.org/wiki/Convection_oven

    A convection oven (also known as a fan-assisted oven, turbo broiler or simply a fan oven or turbo) is an oven that has fans to circulate air around food [1] to create an evenly heated environment. In an oven without a fan, natural convection circulates hot air unevenly, so that it will be cooler at the bottom and hotter at the top than in the ...

  9. Oven temperatures - Wikipedia

    en.wikipedia.org/wiki/Oven_temperatures

    A moderate oven has a range of 350–375 °F (180–190 °C), and a hot oven has temperature set to 400–450 °F (200–230 °C). [1] [2] A fast oven has a range of 450-500 °F (230–260 °C) for the typical temperature. [citation needed]

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