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  2. 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 ...

  3. 8 of the Best Ab Gliders for an Ultra-Toned Core - AOL

    www.aol.com/10-best-ab-gliders-ultra-163500132.html

    3. AbCoaster Max Ab Glider. Best Ab Glider for All Levels. Sculpt your lower, middle and upper abdominals with this reliable apparatus that works by creating a natural arc with a slider motion ...

  4. Thermal wheel - Wikipedia

    en.wikipedia.org/wiki/Thermal_Wheel

    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. Fan coil unit - Wikipedia

    en.wikipedia.org/wiki/Fan_coil_unit

    The equipment used can consist of machines used to remove heat such as a chiller or a cooling tower and equipment for adding heat to the building's water such as a boiler or a commercial water heater. Hydronic fan coil units can be generally divided into two types: Two-pipe fan coil units or four-pipe fan coil units. Two-pipe fan coil units ...

  6. Micro combined heat and power - Wikipedia

    en.wikipedia.org/wiki/Micro_combined_heat_and_power

    Micro combined heat and power, micro-CHP, μCHP or mCHP is an extension of the idea of cogeneration to the single/multi family home or small office building in the range of up to 50 kW. [1] Usual technologies for the production of heat and power in one common process are e.g. internal combustion engines , micro gas turbines , stirling engines ...

  7. Ground source heat pump - Wikipedia

    en.wikipedia.org/wiki/Ground_source_heat_pump

    A heat pump is the central unit for the building's heating and cooling. It usually comes in two main variants: Liquid-to-water heat pumps (also called water-to-water) are hydronic systems that carry heating or cooling through the building through pipes to conventional radiators, underfloor heating, baseboard radiators and hot water tanks. These ...

  8. The Surprising Resistance Band Ab Exercises That ... - AOL

    www.aol.com/lifestyle/surprising-resistance-band...

    “Resistance bands are good for ab workouts because they are easily accessible and can provide a good deal of tension during the exercise that helps activate the core throughout the entirety of ...

  9. Nest Thermostat - Wikipedia

    en.wikipedia.org/wiki/Nest_Thermostat

    It is an electronic, programmable, and self-learning Wi-Fi-enabled thermostat that optimizes heating and cooling of homes and businesses to conserve energy. [ 2 ] The Google Nest Learning Thermostat is based on a machine learning algorithm: for the first weeks users have to regulate the thermostat in order to provide the reference data set.