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  2. Ton of refrigeration - Wikipedia

    en.wikipedia.org/wiki/Ton_of_refrigeration

    It was originally defined as the rate of heat transfer that results in the freezing or melting of 1 short ton (2,000 lb; 907 kg) of pure ice at 0 °C (32 °F) in 24 hours. [1] [2] The modern definition is exactly 12,000 Btu IT /h (3.516853 kW). Air-conditioning and refrigeration equipment capacity in the U.S. is often specified in "tons" (of ...

  3. Category:1970s in India by state or union territory - Wikipedia

    en.wikipedia.org/wiki/Category:1970s_in_India_by...

    1970s in the Andaman and Nicobar Islands (1 C) 1970s in Andhra Pradesh (1 C, 4 P) 1970s in Arunachal Pradesh ... India (1 C, 6 P) R. 1970s in Rajasthan (1 C, 4 P) S.

  4. 1970 in India - Wikipedia

    en.wikipedia.org/wiki/1970_in_India

    [1] 7 September – Maharashtra Pollution Control Board is established under the provisions of Maharashtra Prevention of Water Pollution Act, 1969. 17 September - 1970 Kerala Legislative Assembly election in which Communist Party of India and Indian National Congress contested as a United Front against a Communist Party of India (Marxist) led ...

  5. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    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 ...

  6. Friedrich Air Conditioning - Wikipedia

    en.wikipedia.org/wiki/Friedrich_Air_Conditioning

    1972 SM10310 model, 10,300 BTU/h, 115V 60 Hz, 7 1 ⁄ 2 amps, 860W, and EER of 12.0. It was once the most high-efficiency room air conditioner made by Friedrich. [10] QuietMaster: Professional grade room air conditioners manufactured from the 1976 until 2010, when it was replaced by the S/M/L chassis Kühl models. They were manufactured in ...

  7. Category:1970 in India - Wikipedia

    en.wikipedia.org/wiki/Category:1970_in_India

    1970 elections in India (1 C, 2 P) I. Indira Gandhi administration (6 C, 60 P) N. 1970 Indian novels (5 P) S. 1970 in Indian sport (4 C, 2 P) Pages in category "1970 ...

  8. Category:Indian companies established in 1970 - Wikipedia

    en.wikipedia.org/wiki/Category:Indian_companies...

    Pages in category "Indian companies established in 1970" The following 17 pages are in this category, out of 17 total. This list may not reflect recent changes .

  9. Category:1970s in India by city - Wikipedia

    en.wikipedia.org/wiki/Category:1970s_in_India_by...

    Category: 1970s in India by city. ... (1 C, 5 P) This page was last edited on 22 March 2020, at 19:11 (UTC). Text is available under the Creative ...