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  2. Thermal expansion valve - Wikipedia

    en.wikipedia.org/wiki/Thermal_expansion_valve

    A thermal expansion valve is a key element to a heat pump; this is the cycle that makes air conditioning, or air cooling, possible. A basic refrigeration cycle consists of four major elements: a compressor, a condenser, a metering device and an evaporator. As a refrigerant passes through a circuit containing these four elements, air ...

  3. Radiator (heating) - Wikipedia

    en.wikipedia.org/wiki/Radiator_(heating)

    Radiator (heating) Heat exchange by built-in bathroom radiator uses hot water flow through the stainless steel pipes seen here to raise the temperature of the ambient air. The radiator depicted here also serves as a towel rack and warmer. Radiators and convectors are heat exchangers designed to transfer thermal energy from one medium to another ...

  4. Thermal cutoff - Wikipedia

    en.wikipedia.org/wiki/Thermal_cutoff

    Thermal cutoff. An assortment of thermal fuses. A thermal cutoff is an electrical safety device (either a thermal fuse or thermal switch) that interrupts electric current when heated to a specific temperature. These devices may be for one-time use (a thermal fuse), or may be reset manually or automatically (a thermal switch).

  5. Heat pump and refrigeration cycle - Wikipedia

    en.wikipedia.org/wiki/Heat_pump_and...

    e. Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pump, air conditioning and refrigeration systems. A heat pump is a mechanical system that transmits heat from one location (the "source") at a certain temperature to another location (the "sink" or "heat sink") at a higher temperature. [1]

  6. Tankless water heating - Wikipedia

    en.wikipedia.org/wiki/Tankless_water_heating

    Gas water heaters have an exhaust vent or one to two exhaust pipes on the top, and still require electric power for electronics, sensing and ignition. A three-phase, 21 kW, 400-volt tankless water heater in Europe, with new European color coding for three-phase power. There are also heaters that use several single-phase circuits instead.

  7. Water dispenser - Wikipedia

    en.wikipedia.org/wiki/Water_dispenser

    A water dispenser, sometimes referred to as a water cooler (if used for cooling only), is a machine that dispenses and often also cools or heats up water with a refrigeration unit. It is commonly located near the restroom due to closer access to plumbing. A drain line is also provided from the water cooler into the sewer system.

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