Estimation of Emission Factor (Residual Rate) and Inventory of HFC-134a from Mobile Air Conditioners of Scrap Truck

폐트럭으로부터 온실가스 HFC-134a의 탈루배출계수와 인벤토리 산정에 대한 연구

Kim, Eui-Kun;Kim, Seungdo;Kim, Hyerim;Lee, Young Phyo;Byun, Seokho;Lee, Dong Won

  • Received : 2012.12.13
  • Accepted : 2013.05.22
  • Published : 2013.09.30


This paper attempted to estimate the emissions of HFC-134a from scrap truck as a result of measuring the residual quantities of HFC-134a in air conditioner of scrap truck. We measured the residual amounts in the scrap truck of 138 by applying commercial recover for refrigerants. The average residual rate(disposal-phase emission factor) is reported to be $44.3{\pm}3.3%$ within a confidence interval of 95%. Recent year model trucks exhibit the higher residual rates. Little variation, however, is observed in regard to vehicle size. The HFC-134a emission quantity from scrap truck in 2011 is estimated to be 55,908 $tCO_2$-eq that demonstrates 21.4% increase to compare with that in 2007. As the numbers of truck have increased dramatically during the last two decades, the emissions of HFC-134a from scrap truck would increase sharply in the next coming years. HFC-134a is a very high GWP greenhouse gas. therefore have to reduce the emissions from the scrap truck and need to find ways to recycle. The chemical compositions of refrigerants from scrap truck are quite similar to those of new refrigerants, suggesting that the refrigerants from scrap truck could be reused as refrigerant.


Scrap truck;Greenhouse gas;HFC-134a;Refrigerant;Emission factor;Residual rate


  1. IPCC, 2006, IPCC guidelines for national greenhouse gas inventories, 3, 7.80-7.92.
  2. IPCC, 2005, IPCC TEAP report, Chapter 6 : Mobile air conditioning, 299.
  3. KADRA, 2011, Scrap vehicles statistics (2007-2011).
  4. Kim, M. H., 2005, CFC Status and technology trends of alternative refrigerants for CFCs, Prospectives of Industrial Chemistry, 8(2), 11-24.
  5. Kim, S., Kim, E., Kim, H., Lee, Y. P., Byun, S., Seo, J., Lee, S., 2012a, Estimation of EF(Residual Rate) and inventory of HFC-134a from mobile air conditioners of scrap vehicles, Korea Society of Waste Management, 29(7), 650-661.
  6. Kim, S., Kim, S., Kim, E. 2012b, Development of fugitive emission model of HFC-134a from mobile air conditioner of passenger automobiles, Korea Society for Atmospheric Environment, 28(5), 518- 526.
  7. Ministry of the environment, 2012, Act in the resource recycling electrical and electronic products and automobiles.
  8. MLTM, 2012, Automobile management act.
  9. Schwarz, W., 2001, Emission of refrigerant R-134a from mobile air conditioning systems, Environmental Research and Consultancy Office, Frankfurt am Main, Germany.
  10. Stemmler, K., O'doherty, S., Buchmann, B., Reinmann, S., 2004, Emissions of the refrigerants HFC-134a, HCFC-22, CFC-12 from road traffic : results from a tunnel study, Environ. Sci. Technol., 38, 1998-2004.


Supported by : 환경부