{"title":"圆柱外壳中垂直螺旋线圈的自然对流","authors":"H. Taherian, Peter L. Allen","doi":"10.1115/imece1997-0902","DOIUrl":null,"url":null,"abstract":"\n Experiments were conducted to investigate natural convection heat transfer from single enclosed helical coils in a vertical orientation. Coils having different diameter, pitch, and tube diameters were placed inside a cylindrical shell of fixed height and diameter, to form a natural convection shell-and-coil heat exchanger. Effects of tube diameter, coil surface area and coil pitch on heat transfer coefficient were studied. Nu-Ra correlations were presented based on different characteristic lengths. The data was correlated well by NuDhx = 0.002RaDhx0.630 using heat exchanger hydraulic diameter as the characteristic length.","PeriodicalId":306962,"journal":{"name":"Heat Transfer: Volume 3","volume":"33 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1997-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Natural Convection From Vertical Helical Coils in a Cylindrical Enclosure\",\"authors\":\"H. Taherian, Peter L. Allen\",\"doi\":\"10.1115/imece1997-0902\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n Experiments were conducted to investigate natural convection heat transfer from single enclosed helical coils in a vertical orientation. Coils having different diameter, pitch, and tube diameters were placed inside a cylindrical shell of fixed height and diameter, to form a natural convection shell-and-coil heat exchanger. Effects of tube diameter, coil surface area and coil pitch on heat transfer coefficient were studied. Nu-Ra correlations were presented based on different characteristic lengths. The data was correlated well by NuDhx = 0.002RaDhx0.630 using heat exchanger hydraulic diameter as the characteristic length.\",\"PeriodicalId\":306962,\"journal\":{\"name\":\"Heat Transfer: Volume 3\",\"volume\":\"33 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1997-11-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Heat Transfer: Volume 3\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1115/imece1997-0902\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Heat Transfer: Volume 3","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1115/imece1997-0902","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Natural Convection From Vertical Helical Coils in a Cylindrical Enclosure
Experiments were conducted to investigate natural convection heat transfer from single enclosed helical coils in a vertical orientation. Coils having different diameter, pitch, and tube diameters were placed inside a cylindrical shell of fixed height and diameter, to form a natural convection shell-and-coil heat exchanger. Effects of tube diameter, coil surface area and coil pitch on heat transfer coefficient were studied. Nu-Ra correlations were presented based on different characteristic lengths. The data was correlated well by NuDhx = 0.002RaDhx0.630 using heat exchanger hydraulic diameter as the characteristic length.
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