《Energy and CO2 emissions associated with mechanical planters used in biomass plantations》

  • 来源专题:广州能源研究所信息监测
  • 编译者: linlis@ms.giec.ac.cn
  • 发布时间:2016-03-15
  • Until now, SRC has been studied from many points of view (economic sustainability, environmental impact, harvesting systems, etc.), but few studies of the actual planting operations have been carried out. The objective of this study was to evaluate the energy input and CO2 emission were evaluated during very Short Rotation Coppice (vSRC) planting. The analysis was performed considering different planter types and tree species (poplar, willow and black locust).

    This work showed that the energy input and CO2 emission of vSRC planting is linked to different planter types and, consequently, to the type of planting material used (rods, cuttings and rooting plants). Among the combinations tested, rods planters showed the lowest value for energy consumption (356 MJ ha−1) and CO2 emission (31 kg ha−1) compared to universal planters type (1028 MJ ha−1 and 92 kg ha−1). No difference between tree species was observed in this experiment. Results highlighted that the energy input required by the planting operation is only 1.7% of the total energy input of the vSRC.

相关报告
  • 《Temporal CO2 emissions associated with electricity generation: Case study of Singapore》

    • 来源专题:广州能源研究所信息监测
    • 编译者:giecinfo
    • 发布时间:2016-03-12
    • Abstract Studying temporal patterns in emissions associated with electricity generation is increasingly important. On the supply side, there is interest in integrating renewable energy sources (solar, wind), which are known to vary daily and hourly. On the demand side, the concept of demand response is driving a need to better understand the impact of peak versus off-peak loading, with the objective of maximizing efficiency. In this study, we examine the case of electric power generation in Singapore, and aim to assess the half-hourly variation in associated average carbon dioxide emissions. Given the country’s serious push for clean energy solutions and a possibility of adopting carbon trading in the future, we feel the need to address the currently existing gap in research on daily CO2 emissions patterns. By associating representative electricity generation data with the characterized fleet of power plants, half-hourly emissions are found to range between 415 and 455 kg CO2 per MW h. Marginal emission factors show a fluctuating daily pattern between 390 and 800 kg CO2/MW h. Policy makers able to work with real generation data can use this approach to understand the carbon footprint of short-term supply and demand interventions. Keywords Marginal emissions; Emission factors; Carbon dioxide; Power grid; Power generation; Turbine efficiency
  • 《Study shows Minnesota biodiesel use has caused reduction of 7.4 billion pounds of CO2 emissions》

    • 来源专题:广州能源研究所信息监测
    • 编译者:giecinfo
    • 发布时间:2016-04-13
    • In Minnesota, a recent study from the American Lung Association in Minnesota (ALAMN) has demonstrated the use of biodiesel’s significant positive impact on air quality. The study demonstrated that the summer (B10) and winter blends (B5) used in Minnesota prevent 130 tons of particulate matter, 319 tons of hydrocarbon, and 2,634 tons of carbon monoxide emissions from entering the air each year. ALAMN also found that during the 10-year period with biodiesel as a fuel standard for Minnesota, the state has realized a reduction of more than 7.4 billion pounds, or 3.7 million tons, of carbon dioxide emissions.