476 results about "Performance curves" patented technology

An apparatus and method for predicting cognitive performance of an individual based on factors including sleep history and the time of day. The method facilitates the creation of predicted cognitive performance curves that allow an individual to set his / her sleep times to produce higher levels of cognitive performance. The method also facilitates the reconstruction of past cognitive performance levels based on sleep history.

The invention relates to a method for predicting the performance of large-scale hydrocarbon-bearing reservoir floods. One embodiment of the invention includes a method for predicting performance of a patterned flooding process in a subterranean hydrocarbon-bearing formation, said formation being penetrated by a plurality of injector wells and producer wells, comprising the steps of: determining flow-based pairs of injector to producer wells [FIG. 4, item 78a] (first well pairs) using a geological model [item 76]; developing a connective pore volume distribution curve for each first well pair item [78b]; selecting at least two first well pairs (selected well pairs) that reflect narrow and wide connective pore volume distributions that correspond to high and lower oil recovery levels; developing a 3-D simulation model for each selected well pair, performing a reservoir simulation for each selected well pair for the corresponding flooding process; and generating prototype performance curves for each selected well pair. An alternate embodiment of the invention includes a method for predicting the performance of large-scale hydrocarbon-bearing reservoir floods where injection well location, production well location, a process parameter, or a well processing rate is modified.

The present invention discloses a system of energy-efficient and constant-pressure fluid-transport machines coupled in parallel, which can flexibly and massively provide gas and water to every fabrication unit. The system of the present invention comprises: variable-frequency centrifugal fluid-transport machines, pressure gauges, power meters, flow meters, and controllers. The performance curves of the abovementioned system of fluid-transport machines coupled in parallel and the system impedance curves of the loads are analyzed theoretically and built in the controllers together with the equal-efficiency curves provided by the manufacturer. When the system is operating, the data detected by the pressure gauges, power meters, and flow meters are compared with the built-in data to obtain the optimal energy-efficient conditions as the operational criteria of the system of the present invention.

An apparatus and method for predicting cognitive performance of an individual based on factors including preferably sleep history, the time of day, and the individual's activities. The method facilitates the creation of predicted cognitive performance curves that allow an individual to set his / her sleep times to produce higher levels of cognitive performance. The method also facilitates the reconstruction of past cognitive performance levels based on sleep history.

The invention provides a hydraulic design method of an impeller of a centrifugal pump satisfying the requirements of four working condition points. The method is characterized in that the hydraulic design of the impeller of the centrifugal pump is carried out, and the geometrical parameters of the impeller of the centrifugal pump and the performance parameters of the four working condition points are associated, thus the effect of the coincidence of the actual performance curve and the required performance curve is achieved. The geometrical parameters of the impeller can be adjusted by adopting the impeller designed by method provided by the invention, and purpose of ensuring the performance of the centrifugal pump to satisfy the requirements of the four working condition points is achieved. According to the invention, the consistency of the actual running performance curve and required performance curve of the centrifugal can be ensured, and the method provided by the invention is especially suitable for the hydraulic design of the impeller of the centrifugal pump which has severe requirements for the performance.

Methods and apparatus for enhancing performance curve generation, damage monitoring, and improving non-destructive testing performance. Damage standards used for performance curve generation are monitored using a non-destructive testing (NDT) sensor during a damage evolution test performed with the standard. The evolution test may be intermittently paused to permit ground truth data to be collected in addition to the NDT sensor data. A damage evolution model may be used to estimate ground truth data during the intervening periods of the damage evolution test. The NDT sensor data and ground truth data are used to generate performance curves for the NDT system. Multiple sensors may be monitored at multiple locations on the damage standard and multiple damage evolution tests may be performed with multiple damage standards.

An analysis method for objective factor affecting generator set energy efficiency comprises the following steps of acquiring generator set parameters including generator set design parameters, boiler practical coal combustion amount, current environment temperature, turboset circulating water temperature, load rate, turboset heat supplying and generating ratio and turboset generation amount, calculating external condition deviation according to the boiler practical coal combustion amount, current environment temperature, turboset circulating water temperature, load rate, turboset heat supplying and generating ratio and turboset generation amount, calculating boiler efficiency deviation, turboset efficiency deviation and station service power consumption rate deviation according to a boiler performance test, a turboset performance test and a station service power consumption rate test under multi-work conditions, calculating net coal consumption rate deviation of the multi-work conditions according to the boiler efficiency deviation, turboset efficiency deviation and station service power consumption rate deviation, generating equipment performance curve according to multi-load points and net coal consumption rate deviation, and calculating objective factors of the current load according to external condition deviation and the equipment performance curve.

The invention discloses a gas-liquid two-phase flow performance testing system and method for a centrifugal pump. The system is mainly composed of a liquid storage tank, an inlet pipeline, a gas inlet pipe branch, a variable frequency pump unit and an outlet pipeline. An inlet in the middle of the liquid storage tank is connected with the outlet end of the variable frequency pump unit through the outlet pipeline, the inlet end of the variable frequency pump unit is connected to an outlet in the bottom of the liquid storage tank through the inlet pipeline, and the inlet pipeline is further connected with the gas inlet pipe branch. By collecting signals of a pressure sensor and a torque meter of the variable frequency pump unit, lift and efficiency curves under gas-liquid two-phase flow with different gas contents are obtained. By analyzing signals of a vibration acceleration sensor, a flow quantity vibration curve is obtained. By collecting inlet pressure and the signals of the pressure sensor, cavitating performance curves of the centrifugal pump under the gas-liquid two-phase flow with different gas contents are obtained. A closed circulation loop is formed, and gas-liquid two-phase flow performance testing, vibration testing, cavitating performance testing and the like of the centrifugal pump can be realized. The system is simple in structure, high in testing efficiency and high in testing accuracy.