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  2. 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.

  3. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    The first mini-split system was sold in 1961 by Toshiba in Japan, and the first wall-mounted mini-split air conditioner was sold in 1968 in Japan by Mitsubishi Electric, where small home sizes motivated their development. The Mitsubishi model was the first air conditioner with a cross-flow fan.

  4. Daikin - Wikipedia

    en.wikipedia.org/wiki/Daikin

    On April 28, 2024, Daikin Philippines President Takayoshi Miki hosted Daikin's first fun run, “Daikin: Run for Clean Air 2024” at Bridgetowne with 800 runners. [26] On May 21, 2024, Daikin Industries, led by President & CEO, Masanori Togawa with Chief global group officer and board chair, Noriyuk Inhoue, celebrated its centennial founding with a commemorative ceremony attended by 2,000 at ...

  5. Mitsubishi Electric - Wikipedia

    en.wikipedia.org/wiki/Mitsubishi_Electric

    Mitsubishi Electric Corporation (三菱電機株式会社, Mitsubishi Denki kabushikigaisha, also abbreviated as MELCO) is a Japanese multinational electronics and electrical equipment manufacturing company headquartered in Tokyo, Japan.

  6. Gree Electric - Wikipedia

    en.wikipedia.org/wiki/Gree_Electric

    Gree Electric's Chairwoman is Dong Mingzhu, or "Sister Dong" as she is known in China. [2] She was appointed CEO in 2009. [citation needed] She joined the company in 1990.[citation needed] Dong was also the Chairwoman of its largest shareholder at the time, Gree Group, until November 2016. [8]

  7. Split-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Split-phase_electric_power

    The purpose of a balanced power system is to minimize the noise coupled into sensitive equipment from the power supply. Unlike a three-wire distribution system, the grounded neutral is not distributed to the loads; only line-to-line connections at 120 V are used. A balanced power system is used only for specialized distribution in audio and ...