Emissions estimates of HFC-152a (1,1-difluoroethane, CH(3)CHF(2); 0.82 +/- 0.11 Gg) and HFC-134a (1,1,1,2-tetrafluoroethane, CH(2)FCF(3); 1.16 +/- 0.22 Gg) in LA County for 2008 were obtained using the observed HFC: carbon monoxide (CO) enhancement ratio. Emission rates ...
R152a即1,1-二氟乙烷,是继R134a之后又一个重要的HFC制冷剂。与R134a相比,R152a的分子量更小,饱和蒸汽压更高,在相同蒸发温度下可多获得30%的制冷量。R152a的ODP为0,GWP仅为124,是目前GWP最低的HFC制冷剂。但R152a有轻微可燃性,其燃烧下限高达4.8%。在阳光下,R152a还可发生光解反应。尽管如此,R152a仍...
Coal-based route is mainly adopted to produce HFC-134a, which suffers from large waste and CO2 emissions. Natural gas is a low-carbon and clean energy resource, and no research has been found on the environment and economy of producing HFC-134a from natural gas. In this study, CML 2001 ...
Future emissions and atmospheric fate of HFC-1234yf from mobile air conditioners in Europe. HFC-1234yf (2,3,3,3-tetrafluoropropene) is under discussion for replacing HFC-134a (1,1,1,2-tetrafluoroethane) as a cooling agent in mobile air conditioner... S Henne,DE Shallcross,S Reimann,......
(HFC-free)y 2015,sesultf work with Greenpeacehategan in 2000.heransitionoFC-freeefrigeration willeducehe equipment's direct greenhouse gas emissionsy 99%.ecenteportyopcientistshowshatFCs willeesponsibleoretween 28%nd 45%farbon-equivalent emissionsy 2050 ifocietyeducesarbon dioxide while leavingFC...
G.: Global and regional emissions estimates of 1,1-difluoroethane (HFC-152a, CH3CHF2) from in situ and air archive observations, Atmos. Chem. Phys., 16, 365-382, https://doi.org/ 10.5194/acp-16-365-2016, https://www.atmos-chem-phys.net/16/365/2016/, 2016....
Yearly global emissions of HFC-152a from 1994 to 2004 are derived using the global mean HFC-152a observations and a 12-box 2-D model. The global emission of HFC-152a has risen from 7 Kt/yr to 28 Kt/yr from 1995 to 2004. On the basis of observations of above-baseline elevations ...
This paper documents the latest international research and developments on: 1) refrigerants that satisfy the Montreal Protocol and national environmental regulations; 2) secondary loop MAC (SL-MACs) that achieve lower refrigerant emissions and higher energy efficiency in cooling-only and cooling and ...
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