Apparatus for sustained super-saturations for condensational growth of particles

    公开(公告)号:US10882018B2

    公开(公告)日:2021-01-05

    申请号:US16372677

    申请日:2019-04-02

    Abstract: An apparatus and method for creating enlarged particles in a flow. The apparatus includes a coiled tube having a tube diameter and a coil diameter, the tube having an input receiving the flow and an output, the tube having a length between the input and the output. A heater heats a first portion of the tube along a first, longitudinal portion of the tube, and a cooler cools a second, longitudinal portion of the tube along at least a second portion of the tube. The method includes heating a first portion of the tube along a first longitudinal portion of the tube, and simultaneously cooling a second portion of the tube along at least a second longitudinal portion of the tube. While heating and cooling, the method includes introducing a flow into an interior of the tube at an input, the flow moving the output.

    COILED SYSTEM FOR CONDENSATIONAL GROWTH OF ULTRAFINE PARTICLES

    公开(公告)号:US20190226968A1

    公开(公告)日:2019-07-25

    申请号:US16372643

    申请日:2019-04-02

    Abstract: An apparatus and method for condensationally enlarging particles in a flow of air or other gas. The apparatus includes a coiled tube having a tube diameter and a coil diameter, the tube having an input receiving the flow and an output, the tube having a length between the input and the output. The walls of the tube are wetted with a condensing fluid. The walls of the first portion of the coiled tube are held a temperature that is lower than the highest temperature in the second portion of the tube. The tube may have a third vapor recovery portion with wall temperature lower than the highest temperature in the second portion, and which optionally may not be coiled. While heating and cooling, the method includes introducing a flow into an interior of the tube at an input, the flow moving the output.

    Sustained super-saturations for condensational growth of particles

    公开(公告)号:US10252237B2

    公开(公告)日:2019-04-09

    申请号:US14886661

    申请日:2015-10-19

    Abstract: An apparatus and method for creating enlarged particles in a flow. The apparatus includes a coiled tube having a tube diameter and a coil diameter, the tube having an input receiving the flow and an output, the tube having a length between the input and the output. A heater heats a first portion of the tube along a first, longitudinal portion of the tube, and a cooler cools a second, longitudinal portion of the tube along at least a second portion of the tube. The method includes heating a first portion of the tube along a first longitudinal portion of the tube, and simultaneously cooling a second portion of the tube along at least a second longitudinal portion of the tube. While heating and cooling, the method includes introducing a flow into an interior of the tube at an input, the flow moving the output.

    SUSTAINED SUPER-SATURATIONS FOR CONDENSATIONAL GROWTH OF PARTICLES
    25.
    发明申请
    SUSTAINED SUPER-SATURATIONS FOR CONDENSATIONAL GROWTH OF PARTICLES 审中-公开
    颗粒稳定生长的持续超饱和度

    公开(公告)号:US20160107137A1

    公开(公告)日:2016-04-21

    申请号:US14886661

    申请日:2015-10-19

    Abstract: An apparatus and method for creating enlarged particles in a flow. The apparatus includes a coiled tube having a tube diameter and a coil diameter, the tube having an input receiving the flow and an output, the tube having a length between the input and the output. A heater heats a first portion of the tube along a first, longitudinal portion of the tube, and a cooler cools a second, longitudinal portion of the tube along at least a second portion of the tube. The method includes heating a first portion of the tube along a first longitudinal portion of the tube, and simultaneously cooling a second portion of the tube along at least a second longitudinal portion of the tube. While heating and cooling, the method includes introducing a flow into an interior of the tube at an input, the flow moving the output.

    Abstract translation: 一种用于在流中产生增大的颗粒的装置和方法。 该设备包括具有管直径和线圈直径的盘管,该管具有接收流量的输入和输出,该管具有在输入和输出之间的长度。 加热器沿着管的第一纵向部分加热管的第一部分,并且冷却器沿着管的至少第二部分冷却管的第二纵向部分。 该方法包括沿着管的第一纵向部分加热管的第一部分,同时沿着管的至少第二纵向部分冷却管的第二部分。 在加热和冷却的同时,该方法包括在输入端将流引入到管的内部,流动移动输出。

    AEROSOL MOBILITY IMAGING FOR RAPID SIZE DISTRIBUTION MEASUREMENTS
    26.
    发明申请
    AEROSOL MOBILITY IMAGING FOR RAPID SIZE DISTRIBUTION MEASUREMENTS 有权
    用于快速大小分布测量的气溶胶移动成像

    公开(公告)号:US20150268140A1

    公开(公告)日:2015-09-24

    申请号:US14434263

    申请日:2013-10-08

    Abstract: A parallel plate dimensional electrical mobility separator and laminar flow water condensation provide rapid, mobility-based particle sizing at concentrations typical of the remote atmosphere. Particles are separated spatially within the electrical mobility separator, enlarged through water condensation, and imaged onto a CCD array. The mobility separation distributes particles in accordance with their size. The condensation enlarges size-separated particles by water condensation while they are still within the gap of the mobility drift tube. Once enlarged the particles are illuminated by a laser. At a pre-selected frequency, typically 10 Hz, the position of all of the individual particles illuminated by the laser are captured by CCD camera. This instantly records the particle number concentration at each position. Because the position is directly related to the particle size (or mobility), the particle size spectra is derived from the images recorded by the CCD.

    Abstract translation: 平行平板尺寸电迁移率分离器和层流水冷凝在偏远大气层的典型浓度下提供快速,基于移动性的颗粒尺寸。 颗粒在电迁移率分离器内空间分离,通过水冷凝扩大,并成像到CCD阵列上。 移动性分离根据其尺寸分布颗粒。 通过水凝结,凝结物在移动漂移管的间隙内仍然在缩小时,会缩小尺寸分离的颗粒。 一旦放大,颗粒被激光照射。 在预选频率(通常为10 Hz)下,由CCD照相机捕获由激光照射的所有单个颗粒的位置。 这可以立即记录每个位置的粒子数浓度。 由于该位置与粒度(或移动性)直接相关,所以粒度谱由CCD记录的图像导出。

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