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Tailpipe heat transfer characteristics of Helmholtz-type valveless self-excited pulse combustor was investigated by experiments. The results show that heat transfer coefficient in the tailpipe increases with pressure amplitude and frequency. Heat transfer coefficient of oscillating flow is about 2 to 5 times of steady flow at the same mean Reynolds number. A heat transfer correlation for the oscillating...
This paper provides an idea that using fly ash discharged from power plants as sulfur sorbent for desulfurization. This method can not only economize large expenses of sulfur sorbents and simplify desulfurization devices, but also solve the pollution of fly ash discharging. The desulfurization regulations with different proportions and concentrations of the compound sulfur sorbents (CaCO3 and fly...
Grey Inter-Connection Degree Analysis in a theoretical method of the Grey system theory. This thesis applies the method to evaluating the marketing operation of a certain enterprise, ending up with a scientific and reliable result, which shows broad applicable prospects of the Grey system Theory in the field of marketing.
In this paper, the FDS (Fire Dynamic Simulator) software developed by the U. S. National Institute of Standards and Technology (NIST) was used to simulate the effect of smoke flow and smoke control for determined geometric model based on the features of underground commercial street. Smoke movement in case of natural filling of smoke was qualitatively analyzed. The effects of the number and the arrangement...
This paper designed and described a Helmholtz-type valveless self-excited pulse combustor with continuous fuel and air supply. Its structure is similar to the conventional Helmholtz type's, but valves are not used. The operational characteristics of the Helmholtz-type valveless self-excited pulse combustor was investigated by the experiment. The effects of the excess air ratio, tailpipe length and...
On the basis of research for anomaly detection in the biological immune principles, a gene immune detection algorithm is provided. It combines innate immune and adaptive immune mechanism of the biological immune system. An adaptive approach that changes the thresholds of match in real time is suggested. This paper discussed some problems of anomaly detection in computer immune system. Shown by simulation...
Power transformer is one of the most expensive component of electrical power plants and the failures of such transformer can result in serious power system issues, so fault forecasting for power transformer is very important to insure the whole power system runs normally. In this paper, a novel fault prediction approach for power transformer based on Support Vector Machine (SVM) is presented using...
A multi-level fault diagnosis model for power transformer fault diagnosis based on Statistical theory is presented The fault information within Dissolved Gas Analysis (DGA) is used to build fault diagnosis model and the fault diagnosis is accomplished according to the concentration distribution of typical fault gases in higher dimensional space. The proposed approach is constructing the most accuracy...
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