Climate Change Data Portal
| Atmosphere to Grid: Addressing Barriers to Energy Conversion and Delivery | |
| 项目编号 | DE-SC0012671 |
| Parkinson, Bruce | |
| 项目主持机构 | University of Wyoming |
| 开始日期 | 2018-04-15 |
| 结束日期 | 2019-10-14 |
| 英文摘要 | UV/Near-IR Aerosol Absorption Monitor—Aerodyne Research, Inc., 45 Manning Road, Billerica, MA01821-3976Zhenhong Yu, Principal Investigator,zyu@aerodyne.comJiri Cistecky, Business Official,proposals@aerodyne.comAmount: $225,000 Light-absorbing aerosols caninfluence the global radiation budget and thermodynamic balance of the planetby reducing the amount of sunlight reaching the surface and heating theirsurroundings. At present, most aerosol absorption measurement techniques collectthe airborne samples on a filter substrate and then measure light attenuationdue to the collected samples. The filter-based methods usually need variouscorrections to account for changes in the filter properties due to particledeposit, which could significantly influence the accuracy of the aerosolabsorption measurement. In addition to carbonaceous substances such as blackcarbons, many ambient aerosols also contains a class of light-absorbing organiccarbon species, which have a brownish or yellowish appearance and are usuallycalled brown carbons. Absorption by brown carbons is normally weak at visiblewavelengths but increases significantly towards UV. We propose to developa highly sensitive and real-time opticalmeasurement system to monitoraerosol light absorption at 360nm and 1064nm simultaneously. This approach willuse our newly patented differential photoacoustic technique (DPAS) [U.S. PatentNo. 9696283], which takes advantages of the rapid developments on MEMS microphone,diode-pumped solid state laser, and conductive thin-film coating techniques. Iteliminates theinterferences from gaseous absorbing species such as NO2 and O3. In the visibleregion, the DPAS instrument has achieved a detection limit of 0.35 Mm-1 in 10s and0.12 Mm-1 in100s data acquisition. In this Phase Iproject, we will extend the DPAS technique from visible into UV and near-IRspectral regions. This will facilitate measurements of brown carbons and othermaterials where measurement of only visible light absorption is inadequate. We will design and build twosingle-wavelength DPAS instruments at 360nm and 1064nm, respectively. We will also provide a proof-of-conceptdemonstration in the laboratory by usingsynthetic carbon black samples and other commercial light absorbingnanoparticles. Detection limit, linear response and dynamic range of theproposed measurement technique will be evaluated in the Phase I investigation.In the subsequent Phase II study, we plan to integrate the two DPAS instrumentsinto a transportable measurement device that is capable of operating at the twowavelengths simultaneously. |
| 学科分类 | 1103 - 工程热物理与能源利用;11 - 工程与技术;04 - 物理学 |
| 资助机构 | US-DOE |
| 项目经费 | 5650000 |
| 项目类型 | Grant |
| 国家 | US |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/73245 |
| 推荐引用方式 GB/T 7714 | Parkinson, Bruce.Atmosphere to Grid: Addressing Barriers to Energy Conversion and Delivery.2018. |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Parkinson, Bruce]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Parkinson, Bruce]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Parkinson, Bruce]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
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。
