Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR027221 |
Diurnal pumped‐storage operation minimizes methane ebullition fluxes from hydropower reservoirs | |
Jorge Encinas Ferná; ndez; Hilmar Hofmann; Frank Peeters | |
2020-11-20 | |
发表期刊 | Water Resources Research
![]() |
出版年 | 2020 |
英文摘要 | Hydropower is considered green energy and promoted to reduce greenhouse warming. However, hydropower is typically generated using reservoirs and reservoirs are known to emit substantial amounts of the greenhouse gas methane (CH4) to the atmosphere. In many reservoirs ebullition is the dominant pathway of CH4 emission. We show that continuous diurnal pumped‐storage operation, which combines water pumping into the reservoir typically during the night and water drawdown during high demand of electricity, is beneficial for reducing CH4 ebullition associated with hydropower generation. This conclusion is based on ebullition fluxes and water levels measured over three months in Schwarzenbach reservoir located in Germany. The reservoir was managed using three modes of operation: (1) diurnal pumping and turbination, (2) no pumping and no turbination, and (3) diurnal turbination. Cross‐correlation analysis indicates that ebullition fluxes predominantly occur during diurnal water level decrease associated with turbination. Consistently, average ebullition fluxes of CH4 were negligible during mode (2) and substantial during modes (1) and (3). During mode (3) the average CH4 ebullition flux was ~197 mg m‐2d‐1, ~12 times larger than during mode (1) (16 mg m‐2d‐1). Our data indicate that overall CH4 ebullition is about three times larger during 51 days of operation consisting of 38 days of no turbination followed by 13 days of diurnal turbination than during 51 days of continuous diurnal pumped‐storage operation. This suggests that continuous diurnal pumped‐storage operation leads to reduced CH4 ebullition from reservoirs and is therefore advantageous compared to modes of operations involving long‐term, large‐amplitude turbination cycles. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/304297 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Jorge Encinas Ferná,ndez,Hilmar Hofmann,等. Diurnal pumped‐storage operation minimizes methane ebullition fluxes from hydropower reservoirs[J]. Water Resources Research,2020. |
APA | Jorge Encinas Ferná,ndez,Hilmar Hofmann,&Frank Peeters.(2020).Diurnal pumped‐storage operation minimizes methane ebullition fluxes from hydropower reservoirs.Water Resources Research. |
MLA | Jorge Encinas Ferná,et al."Diurnal pumped‐storage operation minimizes methane ebullition fluxes from hydropower reservoirs".Water Resources Research (2020). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论