摘要
采用生命周期评价的方法,针对一种混合动力燃气热泵系统在全生命周期的碳排放进行了评估。基于生命周期(LCA)评价理论,确定了系统边界,建立了系统生命周期内碳排放核算模型,得到了系统在生产阶段、运输安装阶段、运行阶段和回收利用阶段的碳排放当量。结果表明:系统在运行使用阶段CO2-eq排放量最大,为35387.6kg,大约占据了整个生命周期的84%,主要来源为电力和天然气的使用;生产安装阶段CO2-eq排放量次之,约为6187kg,运输安装及废弃阶段碳排放量很小,几乎可以忽略。因此,要降低系统在全生命周期中的温室气体排放量,应重点放在对电力和天然气的合理使用和新能源的开发上。对比分析了其与单独电力驱动热泵在全生命周期内的碳排放量。分析结果表明:在全生命周期内,混合动力燃气热泵与单独电力驱动热泵相比碳减排量约为20430.9kg。最后进一步讨论了系统的碳减排方法和减排潜力。
Life cycle assessment method was used to evaluate the full life cycle carbon emissions of a kind of hybrid-power gas engine heat pump.With the system boundaries and the accounting mode established based on the life cycle（LCA） assessment,the carbon equivalent emissions in the periods of production,transportation and installation,operation and recycling of the system are figured out respectively.The results show that the system CO 2-eq emissions（35387.6kg） is the highest in running phase,accounting for approximately 84% of the entire life time,and the main source is from the usage of electricity and natural gas;followed by the production phase which are approximately 6178kg;the transportation-installation phase and disposal phase can be neglected because of their low carbon emissions.Therefore,in order to reduce the greenhouse gas emissions of the system in the full life time,more attentions should be paid to the rational use of electricity and natural gas and the development of new energy.Secondly,its carbon emissions are compared with separate power-driven heat pump,and the analysis results show that hybrid-power gas engine heat pump could reduce 20430.9kg carbon emissions.Finally,carbon emission reduction method and emission reduction potential of the system are further discussed.
出处
《制冷学报》
CAS
CSCD
北大核心
2013年第6期52-58,共7页
Journal of Refrigeration
关键词
热泵
碳排放
生命周期
混合动力
heat pump
carbon emissions
life cycle assessment
hybrid-power
