使用混合物的家用气体流量传感器的可靠性
Giorgio Ficco1, Marco Dell'Isola1, Giorgio Graditi2
1Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, 03043 Cassino, Italy.
Sensors (Basel, Switzerland)
|March 13, 2024
概括
新的静态气体流量传感器,包括热质量和超声波类型,在添加剂超过2%时面临准确性问题. 与早期的热质量传感器不同,体积计和超声波计保持了准确性,影响了未来的气体计量可靠性.
科学领域:
- 能源工程 能源工程
- 计量学 计量学 计量学
- 材料科学 材料科学 材料科学
背景情况:
- 静态流量传感器 (热质量,超声波) 正在取代家用天然气的传统体积计,因为它们具有优势.
- 在天然气网络中增加混合物可能会影响这些静态传感器的使用准确性.
- 了解传感器在气体成分变化的可靠性,对于精确的气体计量和计费至关重要.
研究的目的:
- 通过实验分析静态 (热质量,超声波) 和体积气体计的使用可靠性.
- 为了评估不同添加剂对气体计准确度的影响.
- 为了确定影响热质量气流传感器性能的含量值.
主要方法:
- 使用静态和体积气体计进行了实验活动.
- 测试了测量器准确度,在天然气供应中含有不同百分比的混合物.
- 在不同的气体成分下分析了每个计型的绝对加权平均误差.
主要成果:
- 容量计和超声波气体计在验证范围内保持精度,即使添加了混合物.
- 第一代热质量气体流量传感器的准确性仅在低于2%体积的混合物范围内显示.
- 在较高度 (5-10%vol) 时,热质量传感器表现出显著的误差,范围为3.5%至15.8%.
结论:
- 容量计和超声波气体计的准确性不会受到当前混合物水平的显著影响.
- 第一代热质量气体流量传感器在气体网络中不可靠,其中混合物超过2%体积.
- 未来的气体计量基础设施可能需要先进的传感器技术或重新校准策略,以适应更高的含量.
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