Fraunhofer Institute for Wind Energy and Energy System Technology (IWES), Division Bioenergy System Technology, Königstor 59, D-34119 Kassel, Germany.
Department of Engineering Science, University of Applied Sciences Aschaffenburg, Würzburger Str. 45, D-63743 Aschaffenburg, Germany.
Bioresour Technol. 2015 Mar;179:348-358. doi: 10.1016/j.biortech.2014.12.007. Epub 2014 Dec 19.
The environmental performance of biogas plant configurations for a demand - oriented biogas supply for flexible power generation is comparatively assessed in this study. Those configurations indicate an increased energy demand to operate the operational enhancements compared to conventional biogas plants supplying biogas for baseload power generation. However, findings show that in contrast to an alternative supply of power generators with natural gas, biogas supplied on demand by adapted biogas plant configurations saves greenhouse gas emissions by 54-65 g CO(2-eq) MJ(-1) and primary energy by about 1.17 MJ MJ(-1). In this regard, configurations with flexible biogas production profit from reduced biogas storage requirements and achieve higher savings compared to configurations with continuous biogas production. Using thicker biogas storage sheeting material reduces the methane permeability of up to 6m(3) d(-1) which equals a reduction of 8% of the configuration's total methane emissions.
本研究比较了面向需求的沼气供应的沼气厂配置的环境性能，以用于灵活发电。与传统的沼气厂相比，这些配置为基本负荷发电供应沼气，需要增加能源需求来运行运行增强功能。然而，研究结果表明，与使用天然气的替代发电机供应相比，通过适应的沼气厂配置按需供应沼气可节省 54-65gCO2-eqMJ(-1)的温室气体排放和约 1.17MJ MJ(-1)的一次能源。在这方面，具有灵活沼气生产的配置得益于减少的沼气存储要求，并与具有连续沼气生产的配置相比实现了更高的节省。使用更厚的沼气存储片材可将甲烷渗透率降低高达 6m(3)d(-1)，这相当于配置总甲烷排放量的 8%。
