二本毕业设计过程材料格式模板Word文档格式.docx
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二本毕业设计过程材料格式模板Word文档格式.docx
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过程材料
题目:
天津华星酒店空调系统设计
姓 名:
刘岩
学院:
建筑工程学院
专 业:
建筑环境与设备工程
班 级:
建环101
学号:
201051645133
指导教师:
江清阳
导师学科:
导师职称:
教务处制
年月日
嘉兴学院毕业论文(设计)任务书
请同学们从毕业设计平台自行下载。
嘉兴学院外文文献翻译译文
天津华星酒店空调系统设计
专业班级:
建环101学生姓名:
刘岩学号201051645133
一、外文原文1
1.Introduction
Energyconservationmeasure(ECM)isapracticeconductedinabuildingforthepurposeofreducingenergyconsumptioncausedbytheelectricalsystemssuchaslighting,heating,ventilationandairconditioningsystems.ECMisalsoawaytodetermineseveralpotentialalternativesforreducingenergyconsumptionanddecidingwhichalternativesmustbeimplemented.Energyconservationmustbedonewithoutsacrificingthecomfortoftheoccupantsinthebuilding.ECMshavebeenimplementedwidelyinbuildingsforenergysavinginitiativesintherecentyears.ECMscanbecategorizedbasedontheamountoffinancialinvestmentinvolvedinitsimplementations:
zeroinvestment,minorinvestmentandmajorinvestment.TherearetwobasicwaysofconservingenergyusingtheECMapproach.Thefirstmethodinvolvesphysicalalterationsoradditionstotheexistingsysteminthebuildingsuchascompletesystemreplacementsorinstallationofsensorsforlightingsystem,andthesecondmethodrequiresonlychangestotheoperationofthesystemsuchasscheduledlightingsorairconditioningoperatingtimes.
Sincetheuseofheating,ventilationandairconditioning(HVAC)systemaccountsforoneofthehighestpercentageofenergyuseinabuilding,ECMforHVACsystemsisapopularresearchtopicandhasattractedmanybuildingownersintheirefforttominimizethebuildings'
energyconsumption.ECMsonHVACsystemsalsoresultinthehighestenergysavingpotentialcomparedtoitsapplicationontheotherelectricalsystemsinabuilding.HVAC'
sECMscaneitherbeazeroinvestmentECMby,forinstance,changingthethermostattemperaturesetting;
oramajorinvestmentECMby,forexample,replacingtheexistingHVACsystemwithamoreenergy-efficientHVACsystem.
Intherecentyears,ECMsfocusingonHVACoperationschedulingbecomespopularbecauseoftheconsiderablyhighenergysavingpotentialthatitcanprovide.Someoftheoperationsschedulingtechniquesarediscussedin.Intheseproposedtechniques,theschedulingprocessesarequitesimpleandaremainlybasedontheoccupancyofthebuilding.Forexample,ifthebuildingisoccupied,thesetpointtemperatureoftheair-conditioningsystemwillbereduced,andduringunoccupiedtime,thesetpointwillbechangedtohighertemperatures.Thesesetpointtemperaturesmustalsobewithinthethermalcomfortrangesoasnottosacrificethecomfortofthebuilding'
soccupantsintheefforttoreducetheenergyconsumption.Also,inmostofthepreviouslyusedHVACschedulingapproaches,theHVACisoperatedfor24hdailywiththenightsetbacktechnique,whichisanapproachtoreduceenergyusagebyincreasingthesetpointtemperatureduringunoccupiedhours.This,ingeneral,doesnotmaximizetheenergysavingpotentialoftheairconditioningsystem.Therefore,agreatnumbersofschedulingtechniqueshavebeenproposedanddevelopedforthepurposeofmaximizingtheenergysavingpotentialwhilepreservingthecomfortoftheoccupantsinthebuildingorthespace.
Inthispaper,severalmethodsofschedulingtheHVACoperationarediscussed.ThemethodsaredividedintoseveralclassesanddiscussedinSection2ofthispaperwiththeillustrationofthetemperaturesetpointthroughoutthedayaccordingtotherelatedsources.Firstly,thesimplemethodsofHVACschedulingareexplained.Thisisfollowedbythediscussionontheconventionalschedulingtechniquesthatprimarilyaimtoreducethepeakenergydemand.AnotherclassofHVACschedulingmethodsdiscussedinSection2istheadvancedschedulingmethod.Thediscussionsmainlyfocusonhoweachschedulingtechniqueworks,whatmakesitdifferentfromotherschedulingtechniques,theenergysavingpotentialaswellasitslimitationsandpossiblemodificationsthatcanbemade.Section3willdiscussabouttheuseofcomfortindex,PredictedMeanVote(PMV)anditsrelationshipwithoutdoortemperature.ThepaperendswithasummaryandconclusionsthatcanbedrawnfromalltheschedulingtechniquesexplainedthatalsoincludessomerecommendationsfordevelopingnewHVACschedulingtechniques.
2.TypesofHVACscheduling
Inthispaper,theHVACschedulingtechniquesaredividedintothreeclasses;
basictechniques,conventionaltechniquesandadvancedtechniques.Thebasicschedulingtechniqueinvolvesonlythemanipulationofthe‘ON’and‘OFF’statesoftheHVACsystem.Meanwhile,intheconventionalschedulingtechnique,thesetpointtemperaturesoftheHVACsystemaremanipulat
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