摘要
以装机容量10 MW的增强型地热系统(EGS)为例,对其生命周期内能耗和CO2排放进行详细核算,结果表明:EGS能耗以造井和储层建造阶段能耗为主,分别占生命周期能耗的80.04%和12.73%。EGS能耗强度和CO2排放强度(合标准煤)分别为3.45 g/kWh和8.25 g/kWh,能耗强度略高于风电,显著低于光伏发电与火电;CO2排放强度以EGS为最低,相较国内单位发电量764 g/kWh的碳排放,EGS服役期满20 a后,可实现减排CO2106万t。
Considered a 10 MW installed capacity of enhanced geothermal systems （EGS）, detailed accounting of its life cycle energy Consumption and CO2 emissions. The results show that the main stages of energy consumption are well building and reservoir construction, which respectively account for 80.04% and 12.73% of the total energy consumption in EGS. The intensities of energy consumption and CO2 emissions of EGS are 3.45 g coal equivalent per kwh and 8.25 g/（kWh）, respectively. The energy consumption intensity of EGS is slightly higher than that of wind power, and obviously lower than that of photovoltaic power and coal-fired power. The CO2 emission intensity of EGS is the lowest among the considered four power generation ways. Considering the average value 764 g/（kWh） of CO2 emission intensity in China, the CO2 reduce amount will reach 1.06 million tons if a 10 MW EGS is operated normally for 20 years.
出处
《可再生能源》
CAS
北大核心
2013年第5期95-98,102,共5页
Renewable Energy Resources
基金
国家"863"项目(2012AA052802)
广东省软科学研究计划项目(2011B070300142)
关键词
增强型地热系统
生命周期评价
能耗强度
碳排放强度
Enhanced geothermal system
life cycle assessment
energy consumption intensity
CO2 emission intensity
