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JournalISSN: 1674-7607

Journal of Chinese Society of Power Engineering 

About: Journal of Chinese Society of Power Engineering is an academic journal. The journal publishes majorly in the area(s): Boiler (power generation) & Flue gas. Over the lifetime, 253 publications have been published receiving 478 citations.

Papers published on a yearly basis

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Journal Article
TL;DR: In this paper, the heat transfer and resistance characteristics of single or double H-type finned tube banks were analyzed using fluent software, during which variation laws of the heat transferred and resistance properties obtained.
Abstract: Based on general conditions of boiler economizer in large power plant,experimental tests were performed to the heat transfer and resistance characteristics at air-side of single or double H-type finned tube banks,while corresponding numerical simulation performed to the flow and temperature field using Fluent software,during which variation laws of the heat transfer and resistance characteristics obtained.Results show that the heat transfer and resistance characteristics of H-type finned tube banks are influenced by the Reynolds number of gas,i.e.with the growth of Re,the air-side Nu will rise gradually,meaning the heat transfer performance will get better and better,whereas the air-side Eu will drop step by step,and will finally get to a fixed value.In the case of a same Re,the air-side Nu of single H-type finned tube banks will be larger than that of double ones,and for air-side Eu,the variation law is just the opposite.Results of numerical simulation agree well with that of the experimental test,indicating that the numerical calculation method may be used for analysis of flow and heat transfer characteristics of H-type finned tube banks.

17 citations

Journal Article
TL;DR: In this article, a quantitative calculation and comparison was made on water consumption before and after reduction of inlet flue gas temperature, and relevant experimental results were listed, which showed that flue gases desulfurization reaction happens in the tower at saturated steam temperature; when inlet gas temperature changes,corresponding saturated steam temperature changes also, which subsequently results in different desulfureization temperatures of fluegas in the desulfURization tower.
Abstract: Variation law of steam temperature in wet desulfurization system was analyzed,while saturated steam temperatures influenced by various inlet gas temperatures calculated.A quantitative calculation and comparison was made on water consumption before and after reduction of inlet flue gas temperature,and relevant experimental results were listed.Results show that the flue gas desulfurization reaction happens in the tower at saturated steam temperature;when inlet gas temperature changes,corresponding saturated steam temperature changes also,which subsequently results in different desulfurization temperatures of flue gas in the desulfurization tower.Adding flue gas cooler to the desulfurization system can effectively reduce water consumption for lowering flue gas temperature,and therefore water-saving purpose is(achieved.)

8 citations

Journal Article
TL;DR: XRF and SEM-EDX analysis were carried out to fly ash samples taken from various heating surfaces in a 300MW subcritical boiler burning high alkali coal, and the results showed that in the gas temperature range of 800-1 100℃, mass fractions of CaO,MgO and SO3in ash samples are relatively high; whereas for in temperature range, Na2O,Fe2O3and SO3are relatively high, in which case serious fouling on high-temperature convection heating surfaces is caused by Na2SO4,Ca
Abstract: To study the fouling and slagging properties of fly ash from combustion of Xinjiang high alkali coal,XRF and SEM-EDX analysis were carried out to ash samples taken from various heating surfaces in a300MW subcritical boiler burning high alkali coalResults show that in the gas temperature range of800-1 100℃,mass fractions of CaO,MgO and SO3in ash samples are relatively high;whereas for in temperature range of 600-800℃,mass fractions of Na2O,Fe2O3and SO3are relatively high,in which case serious fouling on high-temperature convection heating surfaces is caused by Na2SO4,CaSO4and NaFeSO4during combustion of high alkali coalFor locations where the gas temperature is in the range of 669-915℃,both the initial melting temperature of ash samples and corresponding liquid slag ratio are higher than those in other placesNa2SO4particles with sizes of 2-4μm rich in Na and S are found to stick on surface of ash sample C,which at high temperatures have high sticky properties and low melting temperatures,and therefore may lead to serious fouling problems

7 citations

Journal Article
TL;DR: In this paper, a new prediction scheme is proposed for engineering applications, in which the wind speed signal is first decomposed into trend signal and no-trend random signal, then the latter on is processed and compared respectively using sliding filter method and wavelet analysis method.
Abstract: Based on study of long-term wind speed prediction using time series model,a new prediction scheme is proposed for engineering applications,in which the wind speed signal is first decomposed into trend signal and no-trend random signal,then the latter on is processed and compared respectively using sliding filter method and wavelet analysis method,and finally both the trend signal and previously processed signal are separately predicted and superposed so as to forecast the wind speed.Results show that both the sliding filter method and wavelet analysis method can realize long-term wind speed prediction with a high precision.Compared with wavelet method,sliding filter method is more applicable in industry,due to its less complicated algorithm.

6 citations

Journal Article
TL;DR: Based on the features of extraction heating units that use adjusting butterfly valve to control extraction pressure for the regulation of heating extraction flow, and by analyzing the energy balance in extraction heating link of turbine, differential equations were constructed for simplified nonlinear dynamic model of the generating load-throttle pressure-extraction pressure as mentioned in this paper.
Abstract: Based on the features of extraction heating units that use adjusting butterfly valve to control extraction pressure for the regulation of heating extraction flow,and by analyzing the energy balance in extraction heating link of turbine,differential equations were constructed for simplified nonlinear dynamic model of the generating load-throttle pressure-extraction pressure versus the fuel flow-opening of turbine governor valve-opening of adjusting butterfly valve.On above basis,the disturbance of generating load command,extraction pressure command and mass flow of circulating water in the heating network were simulated.Simulation results show that the relations between model inputs and ouputs are in accord with actual operation conditions of heating units,which can well explain the intrinsic mechanism by controlling extraction pressure to make the extraction flow follow the heating load demand.

6 citations

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Performance
Metrics
No. of papers from the Journal in previous years
YearPapers
201516
201436
201343
201248
201154
201056