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The Unitary Products business group manufacture products in categories including air conditioners, air coolers, [7] commercial refrigerators, water coolers, and water dispensers. Voltas [8] is the largest air conditioning brand in India. It started manufacturing air conditioners in the 1960s under license from the Carrier Corporation. [9]
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.
The line to neutral voltage is half the line-to-line voltage. Lighting and small appliances may be connected between a line wire and the neutral. Higher-power appliances, such as cooking equipment, space heating, water heaters, clothes dryers, air conditioners and electric vehicle charging equipment, are connected to the two line conductors.
Air-conditioner sizes are often given as "tons" of cooling, where 1 ton of cooling equals 12,000 BTU/h (3.5 kW). 1 ton of cooling equals the amount of power that needs to be applied continuously over a 24-hour period to melt 1 ton of ice. The annual cost of electric energy consumed by an air conditioner may be calculated as follows:
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.
The Pearl Street Station also provided DC at 110 V, considered to be a "safe" voltage for consumers, beginning 4 September 1882. [17] AC systems started appearing in the US in the mid-1880s, using higher distribution voltage stepped down via transformers to the same 110 V customer utilization voltage that Edison used. In 1883, Edison patented a ...
A 440-volt capacitor can be used in place of a 370-volt, but not a 370-volt in place of a 440-volt. [2] The capacitance must remain within 5% of its original value. [ 2 ] Round cylinder-shaped dual run capacitors are commonly used for air conditioning , to help in the starting of the compressor and the condenser fan motor. [ 2 ]
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]