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Experimental and numerical study on heat transfer and pressure drop performance of Cross-Wavy primary surface channel

Ma, Ting; Du, Lin xiu; Sun, Ning; Zeng, Min LU ; Sundén, Bengt LU and Wang, Qiu wang (2016) In Energy Conversion and Management 125. p.80-90
Abstract

The Cross-Wavy primary surface heat exchanger is one of the most promising candidates for microturbine recuperators. In this paper, naphthalene sublimation experiments are performed for Cross-Wavy channels in a wind tunnel. The experimental results indicate that the entrance region has a small effect on the unit-averaged heat transfer coefficient of whole Cross-Wavy channels. Correlations of Nusselt number and friction factor in the Cross-Wavy channel are obtained. However, only the Cross-Wavy channel with a large equivalent diameter is tested because the actual Cross-Wavy channels are very complicated and small. Therefore, based on the similarity rules, five Cross-Wavy channels with similar structures but different equivalent diameters... (More)

The Cross-Wavy primary surface heat exchanger is one of the most promising candidates for microturbine recuperators. In this paper, naphthalene sublimation experiments are performed for Cross-Wavy channels in a wind tunnel. The experimental results indicate that the entrance region has a small effect on the unit-averaged heat transfer coefficient of whole Cross-Wavy channels. Correlations of Nusselt number and friction factor in the Cross-Wavy channel are obtained. However, only the Cross-Wavy channel with a large equivalent diameter is tested because the actual Cross-Wavy channels are very complicated and small. Therefore, based on the similarity rules, five Cross-Wavy channels with similar structures but different equivalent diameters are further investigated by numerical simulations. The numerical results indicate that the Cross-Wavy channels with similar structures but different equivalent diameters have similar thermal-hydraulic performance in the studied Reynolds number range.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cross-Wavy channel, Heat transfer, Naphthalene sublimation technique, Pressure drop, Similarity
in
Energy Conversion and Management
volume
125
pages
11 pages
publisher
Elsevier
external identifiers
  • scopus:84979699165
  • wos:000384860500008
ISSN
0196-8904
DOI
10.1016/j.enconman.2016.06.055
language
English
LU publication?
yes
id
4c5b2102-8987-4c80-865f-ae1ffc3011c9
date added to LUP
2016-10-21 12:54:54
date last changed
2017-08-13 04:59:26
@article{4c5b2102-8987-4c80-865f-ae1ffc3011c9,
  abstract     = {<p>The Cross-Wavy primary surface heat exchanger is one of the most promising candidates for microturbine recuperators. In this paper, naphthalene sublimation experiments are performed for Cross-Wavy channels in a wind tunnel. The experimental results indicate that the entrance region has a small effect on the unit-averaged heat transfer coefficient of whole Cross-Wavy channels. Correlations of Nusselt number and friction factor in the Cross-Wavy channel are obtained. However, only the Cross-Wavy channel with a large equivalent diameter is tested because the actual Cross-Wavy channels are very complicated and small. Therefore, based on the similarity rules, five Cross-Wavy channels with similar structures but different equivalent diameters are further investigated by numerical simulations. The numerical results indicate that the Cross-Wavy channels with similar structures but different equivalent diameters have similar thermal-hydraulic performance in the studied Reynolds number range.</p>},
  author       = {Ma, Ting and Du, Lin xiu and Sun, Ning and Zeng, Min and Sundén, Bengt and Wang, Qiu wang},
  issn         = {0196-8904},
  keyword      = {Cross-Wavy channel,Heat transfer,Naphthalene sublimation technique,Pressure drop,Similarity},
  language     = {eng},
  month        = {10},
  pages        = {80--90},
  publisher    = {Elsevier},
  series       = {Energy Conversion and Management},
  title        = {Experimental and numerical study on heat transfer and pressure drop performance of Cross-Wavy primary surface channel},
  url          = {http://dx.doi.org/10.1016/j.enconman.2016.06.055},
  volume       = {125},
  year         = {2016},
}