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1、萬(wàn)方數(shù)據(jù)第59卷第11期化工學(xué)報(bào)V01．59No．112008年11月JournalofChemicalIndustryandEngineering(China)November2008基于NTU的太陽(yáng)能溶液集熱／再生器性能分析彭冬根，張小松(東南大學(xué)能源與環(huán)境學(xué)院，江蘇南京210096)摘要：太陽(yáng)能溶液集熱／再生器是集太陽(yáng)能光熱轉(zhuǎn)化和溶液再生于一體的裝置，它能有效實(shí)現(xiàn)太陽(yáng)能溶液除濕蒸發(fā)冷卻系統(tǒng)的溶液再生。通過(guò)自定義總溫差(△To)和量綱1散熱系數(shù)(也)兩個(gè)變量，得到以傳熱單元數(shù)為自變量的量綱l耦合傳熱、傳質(zhì)模型，并通過(guò)與相關(guān)實(shí)驗(yàn)對(duì)比對(duì)模型進(jìn)行
2、了驗(yàn)證。通過(guò)對(duì)空氣和溶液入口參數(shù)變化對(duì)溶液集熱再生性能影響分析，發(fā)現(xiàn)空氣入口溫度提高120C、濕度降低12g·kg～，溶液出口濃度升幅分別提高30％和70％以上；溶液入口溫度提高30℃，溶液出口濃度升幅提高160％以上。對(duì)4組量綱群分析，得到傳熱單元數(shù)NTU、流量比ASMR、總溫差△To和Lewis數(shù)k的增加都能促進(jìn)溶液再生。逆流再生比順流再生的出口濃度增幅能提高10％左右。關(guān)鍵詞：太陽(yáng)能溶液集熱／再生器；總溫差；量綱1散熱系數(shù)；傳熱單元數(shù)NTU中圖分類號(hào)：TK511．3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：0438—1157(2008)11—2875一09
3、Analysisofperformanceofsolarliquidcollector／regeneratorbasedonNTUPENGDonggen，ZHANGXiaosong(SchoolofEnergyandEnvironment，SoutheastUniversity，Nanjing210096，Jiangsu，China)Abstract：SolarliquidcoUector／regeneratorcombinessolarphotothermictransformationandliquidregeneration，effect
4、ivelyachievingliquidregenerationforsolarenergy—drivenliquiddesiccantcoolingsystems．InthispaperagroupofdimensionlessheatandmasstransferequationsdescribingtheheatandmasstransferprocessesinthesolarliquidC／Rcanbeobtainedbydefiningtotaltemperaturedifference(ATo)anddimensionlesshe
5、atlosscoefficient(h。)andvalidatedbycomparingwiththerelatedexperimentaldata．Throughtheanalysisofeffectofinletparametersofairandsolutionontheregenerationperformance，itwasfoundthatwhentheairinlettemperatureroseby12℃andhumidityratiodecreasedby12g·kg～，theincrementofoutletconcentr
6、ationofsolutionincreasedbyabove30％and70％respectivelyandwhenthesolutioninlettemperatureroseby30"C，theincrementofoutletconcentrationofsolutionraiseincreasedbyabove160％．Fromtheeffectoffourkindsofvariablegroups，theincreaseofnumberofheattransferunits(NTU)，flowrateratio，totaltempe
7、raturedifference△ToandLewisfactorLecouldpromotetheregenerationofsolution．Comparedtotheparallel—currentregeneration，theincrementofsolutionconcentrationinthecounter-currentregenerationcasecouldincreasebyabout10％．Keywords：solarliquidcollector／regenerator；totaltemperaturediffere
8、nce；dimensionlessheatlosscoefficient；numberofheattransferunits(NTU)z008—04一
