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HC-12a, also called ES-12a, OZ-12a, DURACOOL 12a [1] and Hydrocarbon Blend B, is marketed as a "drop-in" replacement refrigerant for R-12 and other refrigerants. HC-12a is a mixture of hydrocarbons , specifically propane (R-290) and isobutane (R-600a), and is therefore considered nearly non-ozone-depleting.
1,1,1,2-Tetrafluoroethane (also known as norflurane (), R-134a, Klea 134a, Freon 134a, Forane 134a, Genetron 134a, Green Gas, Florasol 134a, Suva 134a, HFA-134a, or HFC-134a) is a hydrofluorocarbon (HFC) and haloalkane refrigerant with thermodynamic properties similar to R-12 (dichlorodifluoromethane) but with insignificant ozone depletion potential and a lower 100-year global warming ...
47-year-old An-12 still operational, seen at Malmö Airport, Sweden An An-12A of Vega Air makes a smoky takeoff from Kastrup Airport in 2004. On 8 January 2009, following numerous incidents involving the An-12 in the United Arab Emirates (UAE), the General Civil Aviation Authority (GCAA) issued a temporary ban of the An-12 from UAE airspace. [10]
R-407c container . R-407C is a mixture of hydrofluorocarbons used as a refrigerant.It is a zeotropic blend of difluoromethane (R-32), pentafluoroethane (R-125), and 1,1,1,2-tetrafluoroethane (R-134a).
Note: EIA-170 only appears on the cover page of the document, internal pages are labeled RS-170 in the upper right corner. EIA-170/RS-170 applies only to monochrome (black & white) video. The later color video version is RS-170A which shows color burst and the 4 color field sequence of NTSC.
In 2016, when the Mall of America in Bloomington, Minn., upended a 24-year-old tradition by inviting a Black Santa to take part in its annual “Santa Experience,” both the mall and “Santa ...
According to a "Santa Census" conducted by The Tampa Bay Times in 2017, less than 5% of the professional Santas that work at meet and greets in malls and at other celebrations are Hispanic, Asian ...
A Compatible sideband transmission, also known as amplitude modulation equivalent (AME) or Single sideband reduced-carrier (SSB-RC), is a type of single sideband RF modulation in which the carrier is deliberately reinserted at a lower level after its normal suppression to permit reception by conventional AM receivers. The general convention is ...