| DOI: | 10.2172/1029225
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| 报告号: | ORNL/TM-2011/441
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| 报告题名: | Wireless Sensing, Monitoring and Optimization for Campus-Wide Steam Distribution |
| 作者: | Not Available
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| 出版年: | 2011
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| 发表日期: | 2011-11-01
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | Energy efficiency
; steam distribution system
; wireless sensor networks
; state estimation
; steam trap diagnostics
; flow rate estimation
; spectrogram
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| 英文摘要: | The US Congress has passed legislation dictating that all government agencies establish a plan and process for improving energy efficiencies at their sites. In response to this legislation, Oak Ridge National Laboratory (ORNL) has recently conducted a pilot study to explore the deployment of a wireless sensor system for a real-time measurement-based energy efficiency optimization. With particular focus on the 12-mile long steam distribution network in our campus, we propose an integrated system-level approach to optimize energy delivery within the steam distribution system. Our approach leverages an integrated wireless sensor and real-time monitoring capability. We make real time state assessment on the steam trap health and steam flow estimate of the distribution system by mounting acoustic sensors on the steam pipes/traps/valves and observing measurements of these sensors with state estimators for system health. Our assessments are based on a spectral-based energy signature scheme that interprets acoustic vibration sensor data to estimate steam flow rates and assess steam traps status. Experimental results show that the energy signature scheme has the potential to identify different steam trap states and it has sufficient sensitivity to estimate flow rate. Moreover, results indicate a nearly quadratic relationship over the test region between the overall energy signature factor and flow rate in the pipe. We are able to present the steam flow and steam trap status, sensor readings, and the assessed alerts as an interactive overlay within a web-based Google Earth geographic platform that enables decision makers to take remedial action. The goal is to achieve significant energy-saving in steam lines by monitoring and acting on leaking steam pipes/traps/valves. We believe our demonstration serves as an instantiation of a platform that extends implementation to include newer modalities to manage water flow, sewage and energy consumption. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1029225
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/40052
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1029225.pdf（2288KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Not Available. Wireless Sensing, Monitoring and Optimization for Campus-Wide Steam Distribution. 2011-01-01.
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