图书馆订阅: Guest
Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集
界面现象 及传热
ESCI

ISSN 打印: 2169-2785
ISSN 在线: 2167-857X

Open Access

界面现象 及传热

DOI: 10.1615/InterfacPhenomHeatTransfer.2015012506
pages 41-67

ENHANCING HEAT TRANSFER RATES BY INDUCING LIQUID-LIQUID PHASE SEPARATION: APPLICATIONS AND MODELING

Amos Ullmann
School of Mechanical Engineering The Iby and Aladar Fleischman Faculty of Engineering Tel Aviv University Ramat Aviv 69978 ISRAEL
Pietro Poesio
Department of Mechanical and Industrial Engineering, University of Brescia, Italy
Neima Brauner
School of Mechanical Engineering The Iby and Aladar Fleischman Faculty of Engineering Tel Aviv University Ramat Aviv 69978 ISRAEL

ABSTRACT

This paper focuses on heat transfer enhancement during spinodal decomposition, and it provides an updated review as well as a discussion of future developments. The analysis is mainly based on the work of two research groups at Tel-Aviv University (Israel) and at University of Brescia (Italy). We review the theory of spinodal decomposition of liquid−liquid binary mixtures and we discuss the diffuse interface (DI) approach. While mass and momentum equations in the DI approach have been developed and discussed in other works, we also look into the energy equation, which has been only recently investigated. Direct visualizations of both static and flowing mixture during decomposition are provided. Visualizations of the decomposition in a quiescent fluid have been previously reported, while flowing conditions have been analyzed only recently. Interestingly enough, the morphology is rather different during flowing conditions, where the decomposition exhibits a nucleationlike morphology and not the typical bicontinuous structure observed during spinodal decomposition of a quiescent fluid. Enhancement of heat transfer performances is shown in channels (sizes of 0.8 and 2 mm) using an upper critical solution temperature (UCST) mixture. Although different conditions are analyzed, the results show a consistent enhancement of the heat transfer. The paper reports also some new experimental work on the heat transfer for a lower critical solution temperature (LCST) mixture that can be actually used in cooling applications. A coarse-grained model that could be potentially used for the sizing of large-scale equipment is discussed in term of a possible future development that needs to be further investigated and validated.


Articles with similar content:

A MATHEMATICAL MODEL OF IMBIBITION PHENOMENON IN HOMOGENEOUS POROUS MEDIA
Special Topics & Reviews in Porous Media: An International Journal, Vol.10, 2019, issue 1
Bhumika G. Choksi, Twinkle R. Singh
RELEVANCE OF HEAT TRANSFER AND HEAT EXCHANGERS FOR GREENHOUSE GAS EMISSIONS
Advances in Heat Transfer Engineering, Vol.1, 2003, issue
Bengt Sunden, Lieke Wang
MOLECULAR DYNAMICS STUDY OF THERMAL RECTIFICATION BASED ON DOMINO EFFECT
International Heat Transfer Conference 16, Vol.19, 2018, issue
Ronghui He, Cun Zhang, Kunpeng Yuan, Chengzhi Hu, Xiaoliang Zhang, Dawei Tang, Liang Han, Ming Hu, Zixiong Rao
THERMAL FLUID FLOW TRANSPORT PHENOMENA IN NANOFLUID JET ARRAY IMPINGEMENT
Journal of Flow Visualization and Image Processing, Vol.22, 2015, issue 1-3
Shuichi Torii, Caner Senkal
A MAXIMUM ENTROPY APPROACH TO MODELING THE DYNAMICS OF A VAPORIZING SPRAY
Atomization and Sprays, Vol.20, 2010, issue 12
Mark R. Archambault