enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

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. 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.

5. 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.

6. Barbara Haviland Minor - Wikipedia

   en.wikipedia.org/wiki/Barbara_Haviland_Minor

   Barbara Haviland Minor is an American chemical engineer, known for the development of refrigerants.She was technical leader for chemical company DuPont in the development of R-1234yf, [1] a refrigerant which, as of 2018, was used in 50% of all new vehicles produced by original equipment manufacturers, [2] and which represented an important contribution to countering global warming.

7. Liquid-ring pump - Wikipedia

   en.wikipedia.org/wiki/Liquid-ring_pump

   Single-stage vacuum pumps typically produce vacuum to 35 torr (mm Hg) or 47 millibars (4.7 kPa), and two-stage pumps can produce vacuum to 25 torr, assuming air is being pumped and the ring-liquid is water at 15 °C (59 °F) or less. Dry air and 15 °C sealant-water temperature is the standard performance basis, which most manufacturers use for ...