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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]
The first residential AC was installed by 1914, and by the 1950s there was "widespread adoption of residential AC". [ 13 ] The invention of the components of HVAC systems went hand-in-hand with the Industrial Revolution , and new methods of modernization, higher efficiency, and system control are constantly being introduced by companies and ...
Sanyo worked with Energy Efficiency Services Limited to develop a 1.5-ton inverter air conditioner (AC) with an Indian Seasonal Energy Efficiency Ratio (ISEER) of 5.2. Distribution of these air conditioners began in September 2017. [39] On April 4, 2019, Sanyo launched a new AC range exclusively on Amazon. [40] [41]
The Mitsubishi model was the first air conditioner with a cross-flow fan. [64] [65] [66] In 1969, the first mini-split air conditioner was sold in the US. [67] Multi-zone ductless systems were invented by Daikin in 1973, and variable refrigerant flow systems (which can be thought of as larger multi-split systems) were also invented by Daikin in ...
In addition to mobile phones, Samsung's factories in Noida and Sriperumbudur produce appliances and consumer electronics such as refrigerators, LED televisions, washing machines, and split air conditioners. [58] In February 2015, Huawei opened an R&D center in Bengaluru with an investment of US$170 million.
Early 50 Hz AC railway electrification in the United Kingdom was planned to use sections at 6.25 kV AC where there was limited clearance under bridges and in tunnels. Rolling stock was dual-voltage with automatic switching between 25 kV and 6.25 kV.
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