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  2. Rotary dryer - Wikipedia

    en.wikipedia.org/wiki/Rotary_dryer

    A rotary dryer is a type of industrial dryer used to reduce or minimize the moisture content of the material it is handling by bringing it into contact with a heated gas. [1] The dryer is made up of a rotating cylinder ("drum" or "shell"), a drive mechanism, and a support structure (commonly concrete posts or a steel frame).

  3. Thermal efficiency - Wikipedia

    en.wikipedia.org/wiki/Thermal_efficiency

    For a heat engine, thermal efficiency is the ratio of the net work output to the heat input; in the case of a heat pump, thermal efficiency (known as the coefficient of performance or COP) is the ratio of net heat output (for heating), or the net heat removed (for cooling) to the energy input (external work). The efficiency of a heat engine is ...

  4. Heat pump - Wikipedia

    en.wikipedia.org/wiki/Heat_pump

    Until 2027 fixed heat pumps have no Value Added Tax (VAT). [102] As of 2022 the installation cost of a heat pump is more than a gas boiler, but with the "Boiler Upgrade Scheme" [103] government grant and assuming electricity/gas costs remain similar their lifetime costs would be similar on average. [104]

  5. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    Air conditioner equipment power in the U.S. is often described in terms of "tons of refrigeration", with each approximately equal to the cooling power of one short ton (2,000 pounds (910 kg) of ice melting in a 24-hour period. The value is equal to 12,000 BTU IT per hour, or 3,517 watts. [60]

  6. Washing machine - Wikipedia

    en.wikipedia.org/wiki/Washing_machine

    Typically, the power plug for the washing machine is connected to a special detector receptacle or cable, to allowing monitoring of the power draw. [139] Although pressurized water supply leaks can cause the most damage in the least amount of time, water drainage can also cause problems if not handled properly.

  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. Infrared - Wikipedia

    en.wikipedia.org/wiki/Infrared

    Infrared communications are useful for indoor use in areas of high population density. IR does not penetrate walls and so does not interfere with other devices in adjoining rooms. Infrared is the most common way for remote controls to command appliances. Infrared remote control protocols like RC-5, SIRC, are used to communicate with infrared.

  9. 2021 Texas power crisis - Wikipedia

    en.wikipedia.org/wiki/2021_Texas_power_crisis

    Some gas compressor stations lost power when utilities began shutdowns, and overall gas supply fell by 85%. [57] University of Texas professor Michael Webber said, "This is the moral hazard of the market which is when wind or solar or coal or nuclear underperforms, they lose money.

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