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2. 2,3,3,3-Tetrafluoropropene - Wikipedia

   en.wikipedia.org/wiki/2,3,3,3-Tetrafluoropropene

   R-1234yf is also a component of zeotropic refrigerant blend R-454B. HFO-1234yf has a GWP less than carbon dioxide , [ 4 ] [ 2 ] itself 1,430 times less potent than R-134a . [ 5 ] For this reason, 2,3,3,3‑tetrafluoropropene is the pre-eminent replacement for R-134a in vehicular air conditioners .

3. trans-1,3,3,3-Tetrafluoropropene - Wikipedia

   en.wikipedia.org/wiki/Trans-1,3,3,3-tetrafluoro...

   trans-1,3,3,3-Tetrafluoropropene (HFO-1234ze(E), R-1234ze(E)) is a hydrofluoroolefin.It was developed as a "fourth generation" refrigerant to replace fluids such as R-134a, as a blowing agent for foam and aerosol applications, and in air horns and gas dusters. [3]

4. Hydrofluoroolefin - Wikipedia

   en.wikipedia.org/wiki/Hydrofluoroolefin

   HFOs in use include: 2,3,3,3-tetrafluoropropene (HFO-1234yf, trademarked as Opteon YF) and 1,3,3,3-tetrafluoropropene (HFO-1234ze). [7]cis-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz-Z; DR-2) shows also a promise in high temperature applications like cogeneration, heat recovery and medium temperature heat pumps.

5. Automotive air conditioning - Wikipedia

   en.wikipedia.org/wiki/Automotive_air_conditioning

   R-1234yf is a hydrofluoroolefin refrigerant that contains hydrogen, fluorine, and also carbon elements. The refrigerant was developed by the DuPont/Honeywell company and is more expensive per pound than R-134a. R-1234yf can be found in late-model cars and is not cross-compatible with older R-134a or R-12 systems.

6. Vapor recovery - Wikipedia

   en.wikipedia.org/wiki/Vapor_recovery

   Vapor recovery towers are also used in the oil and gas industry to provide flash gas recovery at near atmospheric pressure without the chance of oxygen ingress at the top of the storage tanks. The ability to create the vapor flash inside the tower often reduces storage tank emissions to less than six tons per year, exempting the tank battery ...

7. Vacuum pump - Wikipedia

   en.wikipedia.org/wiki/Vacuum_pump

   In the field of oil regeneration and re-refining, vacuum pumps create a low vacuum for oil dehydration and a high vacuum for oil purification. [44] A vacuum may be used to power, or provide assistance to mechanical devices. In hybrid and diesel engine motor vehicles, a pump fitted on the engine (usually on the camshaft) is used to produce a vacuum.

8. The 20 Best Winter Vegetables to Enjoy This Season - AOL

   www.aol.com/20-best-winter-vegetables-enjoy...

   Just toss them with olive oil, season with salt and pepper, and you’ve got a simple dish that delivers a ton of nutritional value. Ralf Geithe/Istockphoto. 7. Radishes.

9. Scroll compressor - Wikipedia

   en.wikipedia.org/wiki/Scroll_compressor

   A scroll compressor (also called spiral compressor, scroll pump and scroll vacuum pump) is a device for compressing air or refrigerant. [1] It is used in air conditioning equipment, as an automobile supercharger (where it is known as a scroll-type supercharger ) and as a vacuum pump .