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46 条记录 (耗时 0.035 秒)

    Refrigerant charge adequacy gauge
    5.
    发明申请
    Refrigerant charge adequacy gauge 有权
    制冷剂充电量表

    公开(公告)号：US20060137364A1

    公开(公告)日：2006-06-29

    申请号：US11025787

    申请日：2004-12-27

    申请人： Robert Braun ,  Pengju Kang ,  Julio Concha ,  Sivakumar Gopalnarayanan ,  Timothy Galante ,  Dong Luo ,  Craig Kersten

    发明人： Robert Braun ,  Pengju Kang ,  Julio Concha ,  Sivakumar Gopalnarayanan ,  Timothy Galante ,  Dong Luo ,  Craig Kersten

    IPC分类号： F25B49/00 ,  F25B45/00

    CPC分类号： F25B49/005 ,  F25B2500/19 ,  F25B2500/222 ,  F25B2700/2116 ,  F25B2700/21163

    摘要： A method and apparatus for determining the sufficiency of refrigerant charge in an air conditioning system by the use of only two temperature measurements. The temperature of the liquid refrigerant leaving the condenser coil is sensed and the temperature of the condenser coil itself is sensed and the difference between these two measurements is calculated to provide an indication of the adequacy of refrigerant charge in the system. This process is refined by steps taken to eliminate measurements during transient operations and by filtering signals to eliminate undesirable noise. A permitted threshold of deviation is calculated by using probability theory.

    摘要翻译： 一种用于通过仅使用两个温度测量来确定空调系统中的制冷剂充注足够的方法和设备。 检测离开冷凝器盘管的液体制冷剂的温度，并且感测冷凝器盘管本身的温度，并且计算这两个测量值之间的差异，以提供系统中制冷剂充注的适当性的指示。 该过程通过在瞬态操作期间消除测量并通过滤波信号以消除不期望的噪声的步骤而被改进。 通过使用概率理论计算允许的偏差阈值。

    Apparatus and method for detecting low charge of working fluid in a waste heat recovery system
    6.
    发明授权
    Apparatus and method for detecting low charge of working fluid in a waste heat recovery system 有权
    在废热回收系统中检测低工作流体的装置和方法

    公开(公告)号：US07036315B2

    公开(公告)日：2006-05-02

    申请号：US10742724

    申请日：2003-12-19

    申请人： Pengju Kang ,  Frederick James Cogswell

    发明人： Pengju Kang ,  Frederick James Cogswell

    IPC分类号： F02G1/00

    CPC分类号： F01K23/101 ,  F01K25/08 ,  F02C6/18

    摘要： In a waste heat recovery system having a superheat controller, a reference superheat controller operating trajectory is established and compared with operational superheat controller trajectories from time to time and measuring the deviation therebetween to determine whether a low charge condition exists. If such a condition does exist, warning steps and possibly shut down steps can be taken. As a verification of a low charge condition, the absence or presence of oscillations in the pressure and/or pump power conditions can be observed.

    摘要翻译： 在具有过热控制器的废热回收系统中，建立参考过热控制器操作轨迹，并与操作过热控制器轨迹不时地进行比较并测量它们之间的偏差，以确定是否存在低充电条件。 如果存在这种情况，可以采取警告步骤和可能的关闭步骤。 作为低充电条件的验证，可以观察到在压力和/或泵功率条件下不存在或存在振荡。

    Technique for detecting and predicting air filter condition
    7.
    发明申请
    Technique for detecting and predicting air filter condition 有权
    检测和预测空气过滤器状态的技术

    公开(公告)号：US20050247194A1

    公开(公告)日：2005-11-10

    申请号：US10840758

    申请日：2004-05-06

    申请人： Pengju Kang ,  Mohsen Farzad ,  Slaven Stricevic ,  Payman Sadegh ,  Alan Finn

    发明人： Pengju Kang ,  Mohsen Farzad ,  Slaven Stricevic ,  Payman Sadegh ,  Alan Finn

    IPC分类号： B01D46/00 ,  B01D46/44 ,  B01D46/46

    CPC分类号： B01D46/0086 ,  B01D46/444 ,  B01D2273/30 ,  Y10S116/25

    摘要： A method and system for detecting and predicting air filter condition for an air handling system operates by determining a system resistance to air flow. The system resistance is utilized to determine a detection statistic indicative of current filter condition and to predict remaining life of the air filter. The system resistance is determined using models that approximate the expected operation of the air handling system. The approximation is then compared to actual values to obtain a difference. Once the difference between the approximated value exceeds a threshold value, an alarm is initiated that is indicative of system resistance. The remaining air filter life is then determined by using historically gathered data, or by using a known degradation rate of the air filter. Once the remaining life of the air filter is estimated, replacement can be scheduled that would coincide with other maintenance.

    摘要翻译： 用于检测和预测空气处理系统的空气过滤器状态的方法和系统通过确定系统对气流的阻力来操作。 系统电阻用于确定表示当前过滤条件的检测统计量，并预测空气过滤器的剩余寿命。 使用近似空气处理系统的预期操作的模型确定系统阻力。 然后将近似值与实际值进行比较以获得差异。 一旦近似值之间的差超过阈值，则启动指示系统电阻的报警。 然后通过使用历史收集的数据或通过使用空气过滤器的已知降解速率来确定剩余的空气过滤器寿命。 一旦估计空气过滤器的剩余寿命，可以安排与其他维护一致的更换。

    Startup and control methods for an ORC bottoming plant
    10.
    发明授权
    Startup and control methods for an ORC bottoming plant 有权
    ORC底部装置的启动和控制方法

    公开(公告)号：US07200996B2

    公开(公告)日：2007-04-10

    申请号：US10840775

    申请日：2004-05-06

    申请人： Frederick James Cogswell ,  Pengju Kang

    发明人： Frederick James Cogswell ,  Pengju Kang

    IPC分类号： F01K25/06

    CPC分类号： F01K13/02 ,  F01K25/08

    摘要： The invention is a system and method for smoothly starting and controlling an ORC power plant. The system comprises a cascaded closed loop control that accounts for the lack of relationship between pump speed and pressure at startup so as to control pump speed and pressure, and that smoothly transitions into a steady state regime as a stable operating condition of the system is attained. The cascaded loop receives signals corresponding to a superheat setpoint, a pressure at an evaporator exit, and a temperature at an evaporator exit, and controls the pump speed and pressure upon startup to provide smooth operation. The system and method can further comprise a feed-forward control loop to deal with conditions at start-up and when external disturbances are applied to the ORC power plant.

    摘要翻译： 本发明是一种用于顺利启动和控制ORC发电厂的系统和方法。 该系统包括级联闭环控制，其考虑了启动时泵速度和压力之间缺乏关系，以便控制泵的速度和压力，并且在达到系统的稳定运行状态时平滑地转变为稳态状态 。 级联环路接收对应于过热设定点，蒸发器出口处的压力和蒸发器出口处的温度的信号，并且在启动时控制泵速度和压力以提供平稳的操作。 该系统和方法还可以包括前馈控制回路以处理启动时的状况，以及当外部干扰被施加到ORC发电厂时。