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This paper reports one of our recent ESP upgrading activities. It was performed with a 600 MW coal fired boiler equipped with a four-channels and four-fields ESP. The dust collection efficiency was around 98.69% and the emission was in the range of 200 mg/m3–300 mg/m3. The upgrading include replacing the four traditional single-phase T/Rs used for inlet fields with four three-phase ones. The new HV...
This paper reports one demonstration investigation on one new automatic voltage controller (AVC) named ZH2005 to improve dust collection efficiency and save energy consumption. Experiments were performed with a 200 MW coal-fired boiler owned by Huaneng Beijing Cogeneration Co., Ltd. Energization methods, such as simple-pulsing, spark-rate control, intermittent energization and ZH2005 method, were...
A new kind of bivariate geometric distribution is proposed, which is called as bivariate geometric distribution-type II. Then its properties are discussed systematically.
Using transverse magnetic field (TMF) is one of the most important ways to improve the electric life and the breaking capacity of DC relays. In order to better understand the influence of transverse magnetic field on arc duration, a series of experiments were conducted under external transverse magnetic field with 4 relay contacts in a DC 580V/60A circuit. Using permanent magnets, the transverse magnetic...
A kinetics study of very low pressure chemical vapor deposition (VLPCVD) of SiGe alloys has been reported in this paper. In the kinetics model, SiGe alloy deposition process has been treated as consisting of three steps: SiH 4 and GeH 4 adsorption on Si and Ge vacancy sites, hydrogen exchange between silicon and germanium hydrides and hydrogen desorption from a growing surface. The...
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