Air Quality Studies, Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong.
Air Quality Studies, Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong.
J Hazard Mater. 2014 Aug 15;278:401-8. doi: 10.1016/j.jhazmat.2014.06.020. Epub 2014 Jun 21.
During the implementation of Montreal Protocol, emission inventories of halocarbons in different sectors at regional scale are fundamental to the formulation of relevant management strategy and inspection of the implementation efficiency. This study investigated the emission profile of halocarbons used in the mobile vehicle air conditioning system, the leading sector of refrigeration industry in terms of the refrigerant bank, market and emission, in the Hong Kong Special Administrative Region, using a bottom-up approach developed by 2006 IPCC Good Practice Guidance. The results showed that emissions of CFC-12 peaked at 53 tons ODP (Ozone Depletion Potential) in 1992 and then gradually diminished, whereas HFC-134a presented an increasing emission trend since 1990s and the emissions of HFC-134a reached 65,000 tons CO2-equivelant (CO2-eq) by the end of 2011. Uncertainty analysis revealed relatively high levels of uncertainties for special-purpose vehicles and government vehicles. Moreover, greenhouse gas (GHG) abatements under different scenarios indicated that potential emission reduction of HFC-134a ranged from 4.1 to 8.4 × 10(5)tons CO2-eq. The findings in this study advance our knowledge of halocarbon emissions from mobile vehicle air conditioning system in Hong Kong.
在执行《蒙特利尔议定书》期间，制定相关管理策略和检查实施效率，都需要在区域范围内对各个部门的卤代烃排放清单进行编制。本研究采用 2006 年 IPCC 良好做法指导意见制定的自下而上方法，调查了香港特别行政区制冷行业制冷剂存量、市场和排放的主要部门——汽车空调系统中使用的卤代烃的排放特征。研究结果表明，CFC-12 的排放量在 1992 年达到了 53 吨 ODP（臭氧消耗潜能值）的峰值，随后逐渐减少，而 HFC-134a 自 20 世纪 90 年代以来呈现出增加的排放趋势，到 2011 年底，HFC-134a 的排放量达到了 65000 吨 CO2 当量（CO2-eq）。不确定性分析显示，特种车辆和政府车辆的不确定性水平相对较高。此外，不同情景下的温室气体（GHG）减排表明，HFC-134a 的潜在减排量范围为 4.1 到 8.4×10(5)吨 CO2-eq。本研究的结果增进了我们对香港汽车空调系统卤代烃排放的了解。
