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A numerical prediction on heat transfer characteristics from a circular tube in supercritical fluid crossflow

Xie, Jingzhe; Yan, Hongbin; Sundén, Bengt LU and Xie, Gongnan LU (2019) In Applied Thermal Engineering 153. p.692-703
Abstract


Studies on fluids at supercritical pressure have been developed in a rapid-growth manner so that geometries are not restricted to circular tube. This paper is devoted to conduct a brief review of the recent main experiments on supercritical fluids such as CO
2
, water, R134a and n-decane, and to comment the findings. In addition, this paper discusses the probability of supercritical fluids flowing across tube bundles for the frequent use in shell-and-tube heat exchangers in supercritical power cycle systems. A numerical prediction of flow... (More)


Studies on fluids at supercritical pressure have been developed in a rapid-growth manner so that geometries are not restricted to circular tube. This paper is devoted to conduct a brief review of the recent main experiments on supercritical fluids such as CO
2
, water, R134a and n-decane, and to comment the findings. In addition, this paper discusses the probability of supercritical fluids flowing across tube bundles for the frequent use in shell-and-tube heat exchangers in supercritical power cycle systems. A numerical prediction of flow patterns and heat transfer characteristics of a circular tube in supercritical water crossflow is carried out to make a fundamental investigation of the application of supercritical fluids on external flows. Results indicate that the influence of heat flux on heat transfer in crossflow is similar with that for in-tube flows. The thermal physical properties significantly affect the heat transfer and the flow patterns also show unique characteristics with the change of boundary conditions.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Buoyancy, Heat transfer deterioration, Supercritical fluids, Thermophysical properties, Tube crossflow
in
Applied Thermal Engineering
volume
153
pages
12 pages
publisher
Elsevier
external identifiers
  • scopus:85062918715
ISSN
1359-4311
DOI
10.1016/j.applthermaleng.2019.03.062
language
English
LU publication?
yes
id
e548ac6d-0290-4fbf-b256-8636a0586807
date added to LUP
2019-03-21 08:50:41
date last changed
2019-04-23 04:47:13
@article{e548ac6d-0290-4fbf-b256-8636a0586807,
  abstract     = {<p><br>
                                                         Studies on fluids at supercritical pressure have been developed in a rapid-growth manner so that geometries are not restricted to circular tube. This paper is devoted to conduct a brief review of the recent main experiments on supercritical fluids such as CO                             <br>
                            <sub>2</sub><br>
                                                         , water, R134a and n-decane, and to comment the findings. In addition, this paper discusses the probability of supercritical fluids flowing across tube bundles for the frequent use in shell-and-tube heat exchangers in supercritical power cycle systems. A numerical prediction of flow patterns and heat transfer characteristics of a circular tube in supercritical water crossflow is carried out to make a fundamental investigation of the application of supercritical fluids on external flows. Results indicate that the influence of heat flux on heat transfer in crossflow is similar with that for in-tube flows. The thermal physical properties significantly affect the heat transfer and the flow patterns also show unique characteristics with the change of boundary conditions.                         <br>
                        </p>},
  author       = {Xie, Jingzhe and Yan, Hongbin and Sundén, Bengt and Xie, Gongnan},
  issn         = {1359-4311},
  keyword      = {Buoyancy,Heat transfer deterioration,Supercritical fluids,Thermophysical properties,Tube crossflow},
  language     = {eng},
  pages        = {692--703},
  publisher    = {Elsevier},
  series       = {Applied Thermal Engineering},
  title        = {A numerical prediction on heat transfer characteristics from a circular tube in supercritical fluid crossflow},
  url          = {http://dx.doi.org/10.1016/j.applthermaleng.2019.03.062},
  volume       = {153},
  year         = {2019},
}