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
强化传热期刊
影响因子: 1.406 5年影响因子: 1.075 SJR: 0.287 SNIP: 0.653 CiteScore™: 1.2

ISSN 打印: 1065-5131
ISSN 在线: 1563-5074

强化传热期刊

DOI: 10.1615/JEnhHeatTransf.v24.i1-6.30
pages 61-81

ENHANCED HEAT TRANSFER IN NUCLEATE POOL BOILING OF AQUEOUS SURFACTANT AND POLYMERIC SOLUTIONS

Vivek M. Wasekar
Department of Mechanical, Industrial and Nuclear Engineering, University of Cincinnati, Cincinnati, OH 45221-0072, USA
Raj M. Manglik
Thermal-Fluids and Thermal Processing Laboratory, Mechanical and Materials Engineering, University of Cincinnati, 2600 Clifton Ave, Cincinnati, OH 45220, USA

ABSTRACT

The presence of surfactant or polymer additives at low concentrations in water has been found to enhance the nucleate boiling heat transfer coefficient significantly. Traces of these additives cause no significant change in thermo-physical properties of the solvent except for surface tension and/or apparent viscosity. However, the boiling behavior of the solution is changed appreciably, and the extent of enhancement has been found to be dependent on additive concentration, its type and chemistry, wall heat flux, and the heater geometry. Several mechanisms have been proposed to explain the observed enhancement, that include, among others, effects of dynamic surface tension, Marangoni convection resulting from the variation of the surface tension along the vapor-liquid interface, increased number of active nucleation sites, and change in kinetics of vapor formation. With surface-active or surface-tension decreasing agents in water, nucleate boiling is generally characterized by the formation of smaller-size bubbles with increased departure frequencies, and a decreased tendency to coalesce that causes considerable foaming. This paper discusses these and several other issues, as well as presents new experimental findings in reviewing the current status of pool boiling research with surfactant/polymer additives in water.


Articles with similar content:

A Review of Enhanced Heat Transfer in Nucleate Pool Boiling of Aqueous Surfactant and Polymeric Solutions
Journal of Enhanced Heat Transfer, Vol.6, 1999, issue 2-4
Vivek M. Wasekar, Raj M. Manglik
BUBBLE DYNAMICS AND POOL BOILING HEAT TRANSFER FROM TRIANGULAR AND RECTANGULAR GROOVED SURFACES
Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017), Vol.0, 2017, issue
Satyajit Malode, Sathyabhama A
A STUDY OF THE INCIPIENT NUCLEATION OF LIQUID SODIUM
International Heat Transfer Conference 4, Vol.29, 1970, issue
Robert E. Holtz, Ralph M. Singer
POOL BOILING IN REDUCED GRAVITY
Multiphase Science and Technology, Vol.13, 2001, issue 3&4
P. Di Marco, Walter Grassi
ROLE OF EASY-TO-ACTIVATE NUCLEATION SITES IN POOL BOILING
International Heat Transfer Conference 16, Vol.4, 2018, issue
Ming-Chang Lu, Yi Liu, Dongyan Xu