變制冷劑流量多聯(lián)分體式空調(diào)系統(tǒng)特性與控制研究

1、北京建筑工程學院碩士學位論文變制冷劑流量多聯(lián)分體式空調(diào)系統(tǒng)特性與控制研究姓名：秦瓊申請學位級別：碩士專業(yè)：供熱、供燃氣、通風及空調(diào)工程指導(dǎo)教師：王瑞祥20060401北京建筑工程學院碩L學位論文AbstractEnergysa、Tinga11denviromemprotectionarehotpoimsconcemedbythewholeworldEspecially，energysavingofbuildingair—conditio

2、nerhasinlportants培nificanceTheV撕ableRe矗igerantF10w(VRF)airconditioningsystemhasadVantagesofene唱ysaving，nexibleinstallation，savinginstallmemspaceaJldsoon，hasbeendevelopedquicklyinrecentyearsandwillbeusedinmiddleandsmallsi

3、zebuildingsextensiVely1atetItisVeryirnponanttesearchtheheatphysicalprocessandtechnolo萄calcharacteristicofVRFairconditioIlingsystemBasedontheresearchofVRFairconditioningsystem，thecontrolstrategya11dmethodaredeVeloped，thep

4、rimaryresearchandachievememare：1ThemathematicalmodelsofVRFairconditioningsystemaresetupn∞u出協(xié)emodels，thecharacteristicsofVRFairconditioningsys把mundercoolingmodeisanalyzedusingcoolingrecycleperfb肌ancefiguresandthecontrolst

5、rategyundercoolingmodeisdeveloped2ThecontrolalgorithmofVRFairconditioningsystemissetupTheFuzzyPIDcalculationisdeVelopedontheinputfrequencyofcompressoLtheairvolumeofoutunitandtheopeningareaofinunitelec喇cexpansionvalve，the

6、systemwillreachthesemngconditionquicklywhenthedisturb柚cea舭ctsthesystem3ThecontroIstmtegyofVRFaircondiaoningsystemissetupInthisp印er’thescattercontrolme廿lodonina11doutunitsisad叩tedTrou曲adjustingt11e叩eningareaofin‘uIlitelec

7、tricexp柚sionValVe，tberoomtemperatureandsuperheattemperatureofinunitarecontrolledTrou曲adjustingⅡleinputfkquencyofcomprcssoraJldtheairvolunleofoutunit，t11esuctiona11ddischargepressureofoutunitcompressorarecontrolled4Trou曲e