发布求助
文献互助 智能选刊 最新文献

Letters in Heat and Mass Transfer最新文献

筛选
英文 中文
Shell-side heat transfer coefficients in cylindrical heat exchangers the influence of geometrical factors. II — the leakage case 圆柱换热器壳侧换热系数几何因素的影响。二、漏电箱
Letters in Heat and Mass Transfer Pub Date : 1981-11-01 DOI: 10.1016/0094-4548(81)90052-7
B. Gay, N.V. Mackley , J.D. Jenkins
{"title":"Shell-side heat transfer coefficients in cylindrical heat exchangers the influence of geometrical factors. II — the leakage case","authors":"B. Gay,&nbsp;N.V. Mackley ,&nbsp;J.D. Jenkins","doi":"10.1016/0094-4548(81)90052-7","DOIUrl":"10.1016/0094-4548(81)90052-7","url":null,"abstract":"<div><p>The mass-transfer analogue method, used previously to measure heat transfer coefficients in a single internal compartment of a small cylindrical shell-and-tube heat exchanger model, has been used to study the case where clearances exist between shell and baffle, and between tubes and baffle, for one baffle-spacing, with various flow configurations, and varying baffle-cut. Baffles of two thicknesses with the same ‘Z’ factor, gave different results, contrary to the accepted view. These preliminary results show the need for further work.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"8 6","pages":"Pages 437-452"},"PeriodicalIF":0.0,"publicationDate":"1981-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(81)90052-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82497697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
On the limitations of analytical approximations for phase change problems with large biot numbers 大生物数相变问题解析近似的局限性
Letters in Heat and Mass Transfer Pub Date : 1981-11-01 DOI: 10.1016/0094-4548(81)90055-2
A.D. Solomon
{"title":"On the limitations of analytical approximations for phase change problems with large biot numbers","authors":"A.D. Solomon","doi":"10.1016/0094-4548(81)90055-2","DOIUrl":"10.1016/0094-4548(81)90055-2","url":null,"abstract":"<div><p>While analytical approximation methods are attractive and widely used for phase change problems they may give physically fallacious results for larger Stefan and Biot numbers. In the following we show this for a simple one-phase melting process in a finite slab, obtaining estimates of how large these parameters may be.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"8 6","pages":"Pages 475-482"},"PeriodicalIF":0.0,"publicationDate":"1981-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(81)90055-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75992657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Heat transfer to a single smooth vertical tube immersed in an air fluidized bed 空气流化床中单个光滑垂直管的传热
Letters in Heat and Mass Transfer Pub Date : 1981-11-01 DOI: 10.1016/0094-4548(81)90054-0
J. Cretu, Lidan Yang , S.C. Saxena
{"title":"Heat transfer to a single smooth vertical tube immersed in an air fluidized bed","authors":"J. Cretu,&nbsp;Lidan Yang ,&nbsp;S.C. Saxena","doi":"10.1016/0094-4548(81)90054-0","DOIUrl":"10.1016/0094-4548(81)90054-0","url":null,"abstract":"<div><p>Heat transfer coefficient for a vertical smooth coaxial heat transfer tube is measured in a cylindrical air fluidized bed as a function of fluidizing velocity, temperature and particle size. The qualitative variations of heat transfer coefficient with these parameters are consistent with the general picture of heat transfer mechanism and with the general picture of heat transfer mechanism and with the limited data available in the literature. The solids movement and mixing in the bed is investigated by measuring heat transfer coefficient at different radial locations in the bed as a function of temperature and gas velocity. A quantitative interpretation of these and of similar other data being generated in our laboratory will be published in the near future.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"8 6","pages":"Pages 465-474"},"PeriodicalIF":0.0,"publicationDate":"1981-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(81)90054-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87339912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
List of contents for volume 8, 1981 1981年第8卷目录
Letters in Heat and Mass Transfer Pub Date : 1981-11-01 DOI: 10.1016/0094-4548(81)90061-8
{"title":"List of contents for volume 8, 1981","authors":"","doi":"10.1016/0094-4548(81)90061-8","DOIUrl":"https://doi.org/10.1016/0094-4548(81)90061-8","url":null,"abstract":"","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"8 6","pages":"Pages 525-530"},"PeriodicalIF":0.0,"publicationDate":"1981-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(81)90061-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72288852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Plated thermocouples for boiling heat transfer studies 沸腾传热研究用电镀热电偶
Letters in Heat and Mass Transfer Pub Date : 1981-11-01 DOI: 10.1016/0094-4548(81)90058-8
Hsiang Wei, Jer Ru Maa
{"title":"Plated thermocouples for boiling heat transfer studies","authors":"Hsiang Wei,&nbsp;Jer Ru Maa","doi":"10.1016/0094-4548(81)90058-8","DOIUrl":"https://doi.org/10.1016/0094-4548(81)90058-8","url":null,"abstract":"<div><p>Plated thermocouples are developed for the measurement of the temperatures of the inner and outer surfaces of the tube wall during the boiling heat transfer processes. A thin layer of a suitable metal is electroplated on the surface of the tube wall. The entire contacting surface between the plated layer and the base metal serves as the joint of the thermocouple. A wire of the same material as the tube is securely attached to the tube wall by embedding under an electrodeposited layer of the same metal. Another wire of the same material as the plated layer is securely attached to the plated layer by the same technique. There wires serve as the leads of the thermocouple represents the average temperature of the plated portion of the tube surface fairly accurately. The linearity and reproducibility of the temperature-emf relationship are also very good.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"8 6","pages":"Pages 503-508"},"PeriodicalIF":0.0,"publicationDate":"1981-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(81)90058-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72288849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Plated thermocouples for boiling heat transfer studies 沸腾传热研究用镀热电偶
Letters in Heat and Mass Transfer Pub Date : 1981-11-01 DOI: 10.1016/0094-4548(81)90058-8
Hsiang Wei, J. Maa
{"title":"Plated thermocouples for boiling heat transfer studies","authors":"Hsiang Wei, J. Maa","doi":"10.1016/0094-4548(81)90058-8","DOIUrl":"https://doi.org/10.1016/0094-4548(81)90058-8","url":null,"abstract":"","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"25 1","pages":"503-508"},"PeriodicalIF":0.0,"publicationDate":"1981-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87231003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New concepts on the mechanisms of flooding and flow reversal phenomena 关于泛洪和回流现象机理的新概念
Letters in Heat and Mass Transfer Pub Date : 1981-11-01 DOI: 10.1016/0094-4548(81)90053-9
D. Moalem Maron , A.E. Dukler
{"title":"New concepts on the mechanisms of flooding and flow reversal phenomena","authors":"D. Moalem Maron ,&nbsp;A.E. Dukler","doi":"10.1016/0094-4548(81)90053-9","DOIUrl":"10.1016/0094-4548(81)90053-9","url":null,"abstract":"<div><p>A film model for flooding and flow reversal has been explored for two cases of coupling (circulation) or decoupling (split) between the upflow and downflow. It is shown that for a given interfacial shear (parameter) there exists multiple solutions and oscillation between the possible states takes place. Thus, it would appear that large waves are formed, but in fact the flow is controlled by film equations. The multiple states of the film and the switching mechanism between the slates are supported exceptionally well by experimental findings of mean and fluctuating film thickness and pressure drop.</p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"8 6","pages":"Pages 453-463"},"PeriodicalIF":0.0,"publicationDate":"1981-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(81)90053-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88226440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Natural convection mass transfer in horizontal annuli 水平环空自然对流传质
Letters in Heat and Mass Transfer Pub Date : 1981-11-01 DOI: 10.1016/0094-4548(81)90060-6
G. Sedahmed, L. Shemilt
{"title":"Natural convection mass transfer in horizontal annuli","authors":"G. Sedahmed, L. Shemilt","doi":"10.1016/0094-4548(81)90060-6","DOIUrl":"https://doi.org/10.1016/0094-4548(81)90060-6","url":null,"abstract":"","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"63 1","pages":"515-523"},"PeriodicalIF":0.0,"publicationDate":"1981-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83284857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Laminar film condensation on a porous vertical wall with non-uniform normal velocity 具有非均匀法向速度的多孔垂直壁面层流膜凝结
Letters in Heat and Mass Transfer Pub Date : 1981-11-01 DOI: 10.1016/0094-4548(81)90059-X
C. Liu, K. Ismail, C. D. Ebinuma
{"title":"Laminar film condensation on a porous vertical wall with non-uniform normal velocity","authors":"C. Liu, K. Ismail, C. D. Ebinuma","doi":"10.1016/0094-4548(81)90059-X","DOIUrl":"https://doi.org/10.1016/0094-4548(81)90059-X","url":null,"abstract":"","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"11 1","pages":"509-514"},"PeriodicalIF":0.0,"publicationDate":"1981-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87663367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Natural convection mass transfer in horizontal annuli 水平环空中的自然对流传质
Letters in Heat and Mass Transfer Pub Date : 1981-11-01 DOI: 10.1016/0094-4548(81)90060-6
G.H. Sedahmed , L.W. Shemilt
{"title":"Natural convection mass transfer in horizontal annuli","authors":"G.H. Sedahmed ,&nbsp;L.W. Shemilt","doi":"10.1016/0094-4548(81)90060-6","DOIUrl":"https://doi.org/10.1016/0094-4548(81)90060-6","url":null,"abstract":"<div><p>An experimental investigation of natural convection mass transfer within horizontal cylindrical annuli was performed using the electro-chemical technique. Variables studied were physical properties of the solution and outer tube diameter. Mass transfer data at the outer tube were correlated in the range 5×10<sup>7</sup> &lt; ScsGr &lt; 2.8×10<sup>10</sup> by the equation: Sh = 0.1275 (ScsGr)<sup>0.33</sup></p></div>","PeriodicalId":100875,"journal":{"name":"Letters in Heat and Mass Transfer","volume":"8 6","pages":"Pages 515-523"},"PeriodicalIF":0.0,"publicationDate":"1981-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0094-4548(81)90060-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72288851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信