Microfabricated fuel heating value monitoring device
    1.
    发明授权
    Microfabricated fuel heating value monitoring device 有权
    微型燃油发热值监测装置

    公开(公告)号:US07708943B1

    公开(公告)日:2010-05-04

    申请号:US11355661

    申请日:2006-02-16

    IPC分类号: G01N25/20

    CPC分类号: G01N33/225

    摘要: A microfabricated fuel heating value monitoring device comprises a microfabricated gas chromatography column in combination with a catalytic microcalorimeter. The microcalorimeter can comprise a reference thermal conductivity sensor to provide diagnostics and surety. Using microfabrication techniques, the device can be manufactured in production quantities at a low per-unit cost. The microfabricated fuel heating value monitoring device enables continuous calorimetric determination of the heating value of natural gas with a 1 minute analysis time and 1.5 minute cycle time using air as a carrier gas. This device has applications in remote natural gas mining stations, pipeline switching and metering stations, turbine generators, and other industrial user sites. For gas pipelines, the device can improve gas quality during transfer and blending, and provide accurate financial accounting. For industrial end users, the device can provide continuous feedback of physical gas properties to improve combustion efficiency during use.

    摘要翻译: 微加料燃料加热值监测装置包括与催化微量热计相结合的微细气相色谱柱。 微量热计可以包括参考热导率传感器以提供诊断和保证。 使用微细加工技术,该设备可以以低单位成本生产。 微加料燃料加热值监视装置能够使用空气作为载气,以1分钟分析时间和1.5分钟循环时间连续测定天然气的发热值。 该设备适用于偏远天然气采矿站,管道交换和计量站,涡轮发电机等工业用户场所。 对于天然气管道,该设备可以在转移和混合过程中提高气体质量,并提供准确的财务会计。 对于工业终端用户,该设备可以提供物理气体性能的连续反馈,以提高使用过程中的燃烧效率。

    Capacitive chemical sensor
    3.
    发明授权
    Capacitive chemical sensor 有权
    电容化学传感器

    公开(公告)号:US08736000B1

    公开(公告)日:2014-05-27

    申请号:US11583442

    申请日:2006-10-19

    IPC分类号: H01L29/78

    CPC分类号: G01N27/221

    摘要: A microfabricated capacitive chemical sensor can be used as an autonomous chemical sensor or as an analyte-sensitive chemical preconcentrator in a larger microanalytical system. The capacitive chemical sensor detects changes in sensing film dielectric properties, such as the dielectric constant, conductivity, or dimensionality. These changes result from the interaction of a target analyte with the sensing film. This capability provides a low-power, self-heating chemical sensor suitable for remote and unattended sensing applications. The capacitive chemical sensor also enables a smart, analyte-sensitive chemical preconcentrator. After sorption of the sample by the sensing film, the film can be rapidly heated to release the sample for further analysis. Therefore, the capacitive chemical sensor can optimize the sample collection time prior to release to enable the rapid and accurate analysis of analytes by a microanalytical system.

    摘要翻译: 微型电容化学传感器可用作较大的微量分析系统中的自主化学传感器或分析物敏感的化学预浓缩器。 电容化学传感器检测传感膜介电性能的变化,例如介电常数,电导率或维度。 这些变化是由目标分析物与传感膜的相互作用所致。 该功能提供了一种适用于远程和无人值守感应应用的低功率自加热化学传感器。 电容化学传感器还可以实现智能的分析物敏感化学预浓缩器。 在通过感测膜吸附样品后,可以快速加热膜以释放样品用于进一步分析。 因此,电容化学传感器可以在释放之前优化采样时间,以便通过微量分析系统快速准确地分析分析物。