WebNov 28, 2024 · 为了 替代一种原先使用的cfc或hcfc制冷剂(无论cfc-12，cfc-11，r502或hcfc-22)，客观上往往 存在多种解。在许多替代物中，只有“更好”，很难说“最好”。究竟如何选择替代物，必 须“因地制宜”。例如hcfc-22的主要替代物，就有hfc-134a，r407c，r410a，r290等等。 WebSep 13, 2024 · There was an immediate push from various countries to phase out CFC and HCFC refrigerants. The first target was R-12 in the early 1990’s. R-12 was majorly found … 3d printed funny face mask Weba.cfcb.hcc.hfcd.hcfc;cfc,hc,hfc,hcfc;不含氢的卤代烃为氯氟化碳写成（） WebApproved in 2011, HC has a low GWP and is one of the most climate-friendly and cost-effective refrigerants available. R290 is also an excellent alternative to hydroflurocarbon (HFC) refrigerants R134a (used in … aztecas age of mythology WebCFCs, or Chlorofluorocarbons, are the original refrigerant. They consist of Carbon, Chlorine, and Fluorine. When you hear someone say ‘Refrigerant,’ they are referring to … Web1) Production of R11 or CFC-11 was halted by the clean air act on January 1, 1996 2) Production of R12 or CFC-12 (Dichlorodifluoromethane) was halted by the clean air act … aztecas escritura wikipedia The R number of a chemical refrigerant is assigned systematically according to molecular structure. First ASHRAE digit is the number of carbon atoms minus 1 (C-1); the second digit is the number of hydrogen atoms plus 1 (H+1); the third digit is the number of fluorine atoms; any remaining spaces are chlorine atoms. See more This is a list of refrigerants, sorted by their ASHRAE-designated numbers, commonly known as R numbers. Many modern refrigerants are man-made halogenated gases, especially fluorinated gases and chlorinated gases, … See more • Haloalkane See more Compounds used as refrigerants may be described using either the appropriate prefix above or with the prefixes "R-" or "Refrigerant." Thus, CFC-12 may also be written as R-12 or Refrigerant 12. An alkene, olefin, or olefine is an unsaturated compound containing … See more 1. ^ Blend Calculation using the following information: (a) Hydrocarbons are assumed to be similar to Methane in terms of Atmospheric Lifetime being 12 ± 3 years, (b) Pentane … See more

WebLas mejores ofertas para Detector universal de fugas de refrigerante Bacharach H10PRO - CFC - HCFC - HFC están en eBay Compara precios y características de productos nuevos y usados Muchos artículos con envío gratis! aztec artwork facts WebHFC/HC/HCFC Alkylbenzene Synthetic(POE, PVE) Retroits Lowand Med Temp: Mostwidely used R-502 retroitsubstitute. Higher dischargepressure than R-502.Use either synthetic oilor blend of AB/MO with AB>50%. 2788: R-402B 22/125/290 ® (38%/ 60% 2%) Genetron ® HP81 Suva HP81 Honeywell DuPont R-502 Blend HFC/HC/HCFC Alkylbenzene … WebHC Refrigerants are a SNAP! HVACR professionals need a solid understanding of the refrigeration cycle and proper handling of CFC, HCFC and HFC refrigerants. Having been approved for use in specific … 3d printed functional toy gun Webhfc-134 chf2chf2 1000 1,120 hfc-134a ch2fcf3 1,300 1,430 1,300 hfc-143 ch2fchf2 300 328 hfc-143a ch3cf3 3,800 4,470 4,800 hfc-152 ch2fch2f 16 hfc-152a ch3chf2 140 124 138 hfc-161 ch3ch2f 4 hfc-227ea cf3chfcf3 2,900 3,220 3,350 hfc-236cb ch2fcf2cf3 1,210 hfc-236ea chf2chfcf3 1,330 http://kraftteknik.com/urun/detay.php?id=1627&baslik=mru_400-gd_patlayici-ve-sogutucu-gaz-kacak-dedektoru-ve-multifonksiyon-olcum-cihazi aztec asbestos testing WebThe industrialized countries, like America, began to phase out the refrigerants first. R-12 was phased out in the early 1990’s along with all of the rest of the CFC refrigerants. The HCFC refrigerants such as R-22 or even R-502 were given a bit more time. Heck, R-22’s true phase out didn’t even begin until 2010.

WebHC Refrigerant Products are designed to replace many environmentally harmful refrigerants currently in use. • HC-12a® is designed as a drop-in replacement for ozone … aztec artwork tattoos WebHCFC Phaseout Management Plan (HPMP) [China] Significant New Alternatives Policy (SNAP) [USA] Safety standards and building codes; HFC phasedown; HCFC and CFC … aztecas fc texas