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时间:2020-04-24
《基于性能曲面特性的干湿球温度允差等级划分-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第65卷第9期化工学报Vl01.65No.92014年9月CIESCJournalSeptember2014基于性能曲面特性的干湿球温度允差等级划分张忠斌,一,杜垲,黄虎,张若楠(东南大学能源与环境学院,江苏南京210096;南京师范大学能源与机械工程学院,江苏南京210042)摘要:在试验结果的基础上,分析制冷量和能效比随干湿球温度的变化特性。用赤池信息量准则(Akaikeinformationcriterion,AIC)选取制冷量和能效比最优拟合三维曲面方程,求解制冷量和能效比随干湿球温度变化的梯度极值区间,以两者梯度极值区间内干湿球温度允差范围的并集为A级
2、、现行干湿球温度允差为C级,以各级最大(最小)能效比变化率相等原则,对允差进行三级非线性划分。实例表明随着允差等级的升高,能效比最大变化率由5.19%缩减至1.04%,分级允差能够更加准确地判别房间空调器的能效等级,并给国家标准的修订提供参考。关键词:允差;干湿球温度;房间空调器;性能试验;赤池信息量准则DOI:10.3969~.issn.0438·1157.2014.09.050中图分类号:TB61文献标志码:A文章编号:0438—1157(2014)09—3676—04Gradingofdry—-bulbandwet--bulbtemperatureallo
3、wancesbasedoncharacteristicsofperformancecurvesZHANGZhongbin,一,DUKai,HUANGHu,ZHANGRuonan(SchoolofEnergyandEnvironment,SoutheastUniversity,Nanjing210096,Jiangsu,China;SchoolofEnergyandMechanicalEngineering,NanjingNormalUniversity,Nanjing210042,Jiangsu,China)Abstract:Basedonperformance
4、testresults,characteristicsofcoolingcapacity(CC)andenergyeficiencyratio(EER)changewithindoordry-bulbandwet—bulbtemperatures(D&wBT)areexamined.ByapplyingcorrectedAkaikeinformationcriterion,bestfit3DsurfaceequationsofCCandEERaredeterminedtoobtaintheirvariationgradientsandcorespondingin
5、tervalsofgradientextrema.Basedontheclassificationprincipleofkeepingthemaximum(minimum)EERvariationratesbetweenneighboringclassesequa1.D&WBTallowancesinnationalstandardareclassifiedintothreeclassesbyusingnonlinearclassification.withthecorespondingrangeofD&WBTintheunionsetoftheinterval
6、sofgradientextremaofCCandEERasClassA.andthecurrentD&WBTallowancessetinthenationalstandardasClassC.Asanillustrationofthisnewmethod.indoorD&WBTallowancesunderthecoolingworkingconditionareclassifiedintoClassA。BandC.TheresultsshowthattheEERvariationrateinClassAiSaslowas1.04%.whilethatinC
7、lassCiS5.19%.ItcanbeconcludedthatclassifiedD&WBTallowancesaremoreefectiveinevaluatingtheperformanceofaunitandvaluableasareferenceforrevisionofthenationalstandard.2014.01—21收到初稿,2014—04.30收到修改稿。Receiveddate:20l4—01.21.联系人:杜垲。第一作者:张忠斌(1980一),男,博士研究生。Correspondingauthor:Prof.DUKai,du—ka
8、i@sea.educn基
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