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This is a list of refrigerants, sorted by their ASHRAE-designated numbers, commonly known as R numbers. Many modern refrigerants are human-made halogenated gases, ...
A Battery: Eveready 742: 1.5 V: Metal tabs H: 101.6 L: 63.5 W: 63.5 Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threaded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.
R-421A is for use in "air conditioning split systems, heat pumps, supermarket pak systems, dairy chillers, reach-in storage, bakery applications, refrigerated transport, self-contained display cabinets, and walk-in coolers". Uses mineral oil (MO), Alkylbenzene (AB), and POE. R-422B is for use in low-, medium-, and high-temperature applications.
Powered by a 625 hp (466 kW) R-1510-92 radial, later converted into biplane as the XS4C-1. 1933 Never 1 F2F: Naval fighter Grumman Designed for both carrier- and land-based operation, it served as a standard for the United States Navy between 1936 and 1940. 1933 1935 55 XF3U: Fighter Vought 1933 Never 1 XF3J: Carrier fighter. Berliner-Joyce ...
Ordered in May 2000, half of them tracked, the other half wheeled. Due to deliver in three batches by the end of 2005–12 in 2003, 24 in 2004 and 14 in 2005. Prices given were US$ 734 million (including a US$100 million advance payment to complete R&D), [141] with the price per single unit being about US$15 million. Delivery postponed after ...
A rechargeable battery, storage battery, or secondary cell (formally a type of energy accumulator), is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use.
The first generation rechargeable alkaline batteries were introduced by Union Carbide and Mallory in the early 1970s. [3] [5] Several patents were introduced after Union Carbide's product discontinuation and eventually, in 1986, Battery Technologies Inc of Canada was founded to commercially develop a 2nd generation product based on those patents, under the trademark "RAM".
R-410A was invented and patented by Allied Signal (now Honeywell) in 1991. [5] Other producers around the world have been licensed to manufacture and sell R-410A. [6] R-410A was successfully commercialized in the air conditioning segment by a combined effort of Carrier Corporation, Emerson Climate Technologies, Inc., Copeland Scroll Compressors (a division of Emerson Electric Company), and ...
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