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  2. Air source heat pump - Wikipedia

    en.wikipedia.org/wiki/Air_source_heat_pump

    The main components of a split-system (called split as there are both inside and outside coils) air source heat pump are: An outdoor evaporator heat exchanger coil, which extracts heat from ambient air; One or more [9] indoor condenser heat exchanger coils. They transfer the heat into the indoor air, or an indoor heating system such as water ...

  3. Variable refrigerant flow - Wikipedia

    en.wikipedia.org/wiki/Variable_refrigerant_flow

    Variable refrigerant flow (VRF), also known as variable refrigerant volume (VRV), is an HVAC technology invented by Daikin Industries, Ltd. in 1982. [1] Similar to ductless mini-split systems, VRFs use refrigerant as the primary cooling and heating medium, and are usually less complex than conventional chiller-based systems.

  4. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    Evaporator, indoor unit, or terminal, side of a ductless split-type air conditioner. Ductless systems (often mini-split, though there are now ducted mini-split) typically supply conditioned and heated air to a single or a few rooms of a building, without ducts and in a decentralized manner. [63]

  5. Samsung C&T Corporation - Wikipedia

    en.wikipedia.org/wiki/Samsung_C&T_Corporation

    Samsung Construction and Trading Corporation (Korean: 삼성물산 주식회사; stylized as Samsung C&T) is a South Korean construction and engineering company. It was founded in 1938 as the first Samsung company and was initially involved in construction and overseas trading operations. Since 1995, it has largely focused on global engineering ...

  6. Toshiba - Wikipedia

    en.wikipedia.org/wiki/Toshiba

    The first mini-split ductless air conditioner was sold in 1961 by Toshiba in Japan. [21] ... Samsung Electronics, Canon and Panasonic). [116] ...

  7. Electric power distribution - Wikipedia

    en.wikipedia.org/wiki/Electric_power_distribution

    Most of the Americas use 60 Hz AC, the 120/240 volt split-phase system domestically and three phase for larger installations. North American transformers usually power homes at 240 volts, similar to Europe's 230 volts. It is the split-phase that allows use of 120 volts in the home. Japan's utility frequencies are 50 Hz and 60 Hz.