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《封装优态盐同心套管储冷特性试验研究.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、50FLUIDMACHINERYVo1.43,No.12,2015文章编号:1005—0329(2015)12—0050—05封装优态盐同心套管储冷特性试验研究姬长发,李生金,陈柳。李品利(西安科技大学,陕西西安710054)摘要:通过自行建立的试验台,对封装优态盐同心套管式相变储冷单元的蓄冷、释冷特性进行试验研究。主要研究了制冷剂的蒸发温度对蓄冷特性的影响及载冷剂的温度和流量对释冷特性的影响。结果表明,制冷剂的蒸发温度对蓄冷的影响较大,制冷剂的蒸发温度越低,结冰越快,结冰率越大,达到同样的结冰率需要的时间也越短;载冷剂的进口温度对释冷过程的影响较大,相比之下载冷剂的流量对蓄冷和释冷过程的影响
2、要小。在试验条件下,蓄冷时较合理的制冷剂蒸发温度和载冷剂流量分别为1℃和0.241m/h,释冷过程较合适的载冷剂进口温度和载冷剂流量分别为10℃和0.283m。/h。关键词:优态盐;蓄冷;相变;试验研究中图分类号:TH137;TB65;TU831.6文献标志码:Adoi:10.3969/j.issn.1005—0329.2015.12.012ExperimentalResearchforColdStorageCharacteristicsoftheEnclosedEutecticSaltConcentricJacketedJIChang—fa,LISheng—jin,CHENLiu,LIPin
3、—li(Xi’anUniversityofScienceandTechnology,Xi’an710054,China)Abstract:Thecoolstoragetechnologymoreandmoreattentionathomeandabroad.Butthecentralairconditioningsystemofwaterandicethermalstorageofcommonlyusedcoldbecauseoflowevaporationtemperatureandthereforeenergyconsumption.Bypersonallybuildtestbench,o
4、fcoldstorageandcoldreleasecharacteristicswasstudiedoftheenclosedeutecticsaltconcentricjacketedphasechangematerials.Mainlystudiestheinfluenceoftherefrigerantevaporationtemperatureoncoldstoragecharac—teristics,temperatureandflowrateofsecondaryrefrigerantinfluenceoncoldreleasecharacteristics.Theresults
5、showedthattheevaporationtemperatureofrefrigerant,agreatinfluenceonthestorageprocess,therefrigerantevaporatingtemperatureislower,thefreezingrateisbigger,achievethesamefreezingratelesstimeitwilltake.Theinlettemperatureofsecondaryrefrigeranthavebiggerinfluenceonthecoldreleaseprocess,bycontrast,Theflowo
6、fthesecondaryrefrigeranthavealittleinfluencetotheprocessofcoldstorageandrelease.Undertheexperimentalconditionsofcoldstorageprocess,suitablerefrigerantevaporationtemperatureis1℃.suitablesecondaryrefrigerantflowrateis0.241m/h.Theinterpretationofthecoldreleaseprocesssuitablesecondaryrefrigerantinlettem
7、peratureandsecondaryrefrigerantflowat10℃and0.283m/hrespectively.Keywords:eutecticsalt;coldstorage;phasechange;experimentalstudy1前言率低,系统峰谷差加大,高峰时段电力不足,低谷时段电力得不到有效利用。为实现节能降耗,缓在中国能源消耗中,建筑耗能约占25%~和电力供应紧张及
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