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  2. Hatanagi-I Dam - Wikipedia

    en.wikipedia.org/wiki/Hatanagi-I_Dam

    The Hatanagi Project was designed as a pumped-storage hydroelectricity facility, with the discharge from Hatanagi No.1 Dam discharging through a 5 kilometres (3.1 mi) penstock into a lake created by the smaller Hatanagi No.2 Dam downstream. The reversible turbine generators at the Hatanagi No.1 power plant were designed to function as either ...

  3. Ground-coupled heat exchanger - Wikipedia

    en.wikipedia.org/wiki/Ground-coupled_heat_exchanger

    A ground-coupled heat exchanger is an underground heat exchanger that can capture heat from and/or dissipate heat to the ground. They use the Earth's near constant subterranean temperature to warm or cool air or other fluids for residential, agricultural or industrial uses.

  4. Heat recovery ventilation - Wikipedia

    en.wikipedia.org/wiki/Heat_recovery_ventilation

    Diagramatic operation of a thermal wheel Ljungström Air Preheater by Swedish engineer Fredrik Ljungström (1875–1964). A thermal wheel, also known as a rotary heat exchanger, or rotary air-to-air enthalpy wheel, energy recovery wheel, or heat recovery wheel, is a type of energy recovery heat exchanger positioned within the supply and exhaust air streams of air-handling units or rooftop ...

  5. NYT ‘Connections’ Hints and Answers Today, Sunday, December 15

    www.aol.com/nyt-connections-hints-answers-today...

    1. These are commonly added to meals in order to enhance their flavor. 2. Not meeting expectations or failing. 3. A quick way to skim or browse something. 4. Names of popular artists with a ...

  6. Plastic pipework - Wikipedia

    en.wikipedia.org/wiki/Plastic_pipework

    Plastic Pipe lengths manufactured in Australia by extruding HDPE material.. Plastic pipe is a tubular section, or hollow cylinder, made of plastic.It is usually, but not necessarily, of circular cross-section, used mainly to convey substances which can flow—liquids and gases (fluids), slurries, powders and masses of small solids.

  7. 21 Vintage Photos of Christmas Window Displays From the Last ...

    www.aol.com/21-vintage-photos-christmas-window...

    Take a trip down memory lane with by looking at these incredible photos of Christmas window displays from the last 100 years,

  8. Clemson wins ACC championship, automatic playoff berth on ...

    www.aol.com/sports/clemson-wins-acc-championship...

    December 8, 2024 at 1:06 AM. Nolan Hauser's 56-yard field goal as time expired lifted No. 17 Clemson to a 34-31 win over No. 8 SMU in the ACC championship game. With the win, ...

  9. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.