简介:本项目利用西门子S7-300系列PLC完成了对原有换热系统的改造。原有换热系统通过手动设定PID表的温度设定值来达到对换热阀门开度大小的控制,改造后换热系统由半自动控制系统转换为全自动控制系统,并最大限度的利用了回收的凝结水的热量。
简介:InMarchthisyear,theGovernmentofJiangsuXinghuaCityarrivedatanagreementonabiomassstrawpowergenerationprojectwithAsianPowerIndustryInvestmentCo.Ltd.(Singapore)inMaoshanTown,XinghuaCity.Theprojectwillbeinstalledwithtwo12-MWgeneratingunitsandwillbeabletoproduce120GWhofelectricityayear.
简介:220-kVandaboveclasstransmissionandsubstationfacilitiesIn2005therewere325supplyenterprises(including29EHVtransmissionandsubstationenterprises)and221generationenterprisesalloverthecountry.Mainreliabilityindexesof13kindsoftransmissionandsubstationfacilitiesin2004and2005areshowninTable1.Itcanbeenseenthatthereliabilityindexesin2005remainedatahighJevel,andtheiravailabilityfactorcameuptoover98%.Thisembodiedthattheenterpriseswerestillabletoputthereliabilitymanagementworkinthe
简介:1.ThepresentmanufacturingsituationofChina’sthermalpowergenerationequipmentBytheyear1995.developmentofChina’selectricpowerindustryhasexperiencedacourseofahundredyears.Overaperiodoftheinitial50years.China’sdevelopmentofelectricpowerwasslow.Atthetimeof1949,thetotalinstalledcapacityinChinawas1,850MWandtheelectricitygeneratedwasonly4.3billionkWh.Duringthepast46yearsafter1949,herannual
简介:Likeothercountriesintheworld,itisinevitabletoencoun-terwithsomeenvironmentproblemsintheprocessofen-ergydevelopmentandutilization.ItisespeciallysoinChinawhereenergystructureismainlybasedoncoal.Atpresent,coaltakes74%ofthetotalprimaryenergywhileoutofthe74%,only23%hasbeenconvertedintocleanandconvenientelectncenergy.Sopredomi-nately,theairpollutioninChinaismainlycausedbycoalsmoke.Inlargecities,theairpollutionbydirectcoalburningisbecomingmoreandmoreoutstandingduetothefastdevelopmentofindustryand