Enhanced heat transfer in tubes based on vascular heat exchangers in fish: Experimental investigation

Kristina Navickaitė, Andrea Mocerino, Luca Cattani, Fabio Bozzoli, Christian Bahl, Klaus Liltrop, Xiaodan Zhang, Kurt Engelbrecht*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A double corrugated tube geometry for improved heat transfer performance inspired by vascular heat exchangers found in fish such as the tuna and the opah is presented. The geometry features a cross section that varies continuously in the flow direction while maintaining a constant hydraulic diameter, which gives enhanced heat transfer at a relatively low increase in pressure drop. Five ellipse-based tubes with varying corrugation severity and period that emulate blood vessels of fish were produced in an aluminium alloy using additive manufacturing technology. Thermal performance of the novel tube design was experimentally investigated in a counter flow tube-in-shell heat exchanger in a range of Reynolds numbers from 1000 to 2500. Correlations for the Nusselt number and friction factor for each tube are proposed and the experimental results show that the Nusselt number increases up to 500% in corrugated tubes compared to a straight tube. The global thermo-hydraulic performance, evaluated for the same pumping power, of the double corrugated tubes is up to 160% higher than that of a straight tube.
Original languageEnglish
JournalInternational Journal of Heat and Mass Transfer
Volume137
Pages (from-to)192-203
ISSN0017-9310
DOIs
Publication statusPublished - 2019

Keywords

  • Vascular heat exchanger
  • Double corrugation
  • High performance heat transfer devices
  • Biomimetic
  • Modified Wilson plot
  • Nusselt number correlation

Cite this

@article{3221615c494b4ac7ada4bba9b1ef1ccb,
title = "Enhanced heat transfer in tubes based on vascular heat exchangers in fish: Experimental investigation",
abstract = "A double corrugated tube geometry for improved heat transfer performance inspired by vascular heat exchangers found in fish such as the tuna and the opah is presented. The geometry features a cross section that varies continuously in the flow direction while maintaining a constant hydraulic diameter, which gives enhanced heat transfer at a relatively low increase in pressure drop. Five ellipse-based tubes with varying corrugation severity and period that emulate blood vessels of fish were produced in an aluminium alloy using additive manufacturing technology. Thermal performance of the novel tube design was experimentally investigated in a counter flow tube-in-shell heat exchanger in a range of Reynolds numbers from 1000 to 2500. Correlations for the Nusselt number and friction factor for each tube are proposed and the experimental results show that the Nusselt number increases up to 500{\%} in corrugated tubes compared to a straight tube. The global thermo-hydraulic performance, evaluated for the same pumping power, of the double corrugated tubes is up to 160{\%} higher than that of a straight tube.",
keywords = "Vascular heat exchanger, Double corrugation, High performance heat transfer devices, Biomimetic, Modified Wilson plot, Nusselt number correlation",
author = "Kristina Navickaitė and Andrea Mocerino and Luca Cattani and Fabio Bozzoli and Christian Bahl and Klaus Liltrop and Xiaodan Zhang and Kurt Engelbrecht",
year = "2019",
doi = "10.1016/j.ijheatmasstransfer.2019.03.067",
language = "English",
volume = "137",
pages = "192--203",
journal = "International Journal of Heat and Mass Transfer",
issn = "0017-9310",
publisher = "Pergamon Press",

}

Enhanced heat transfer in tubes based on vascular heat exchangers in fish: Experimental investigation. / Navickaitė, Kristina; Mocerino, Andrea; Cattani, Luca; Bozzoli, Fabio; Bahl, Christian; Liltrop, Klaus; Zhang, Xiaodan; Engelbrecht, Kurt.

In: International Journal of Heat and Mass Transfer, Vol. 137, 2019, p. 192-203.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Enhanced heat transfer in tubes based on vascular heat exchangers in fish: Experimental investigation

AU - Navickaitė, Kristina

AU - Mocerino, Andrea

AU - Cattani, Luca

AU - Bozzoli, Fabio

AU - Bahl, Christian

AU - Liltrop, Klaus

AU - Zhang, Xiaodan

AU - Engelbrecht, Kurt

PY - 2019

Y1 - 2019

N2 - A double corrugated tube geometry for improved heat transfer performance inspired by vascular heat exchangers found in fish such as the tuna and the opah is presented. The geometry features a cross section that varies continuously in the flow direction while maintaining a constant hydraulic diameter, which gives enhanced heat transfer at a relatively low increase in pressure drop. Five ellipse-based tubes with varying corrugation severity and period that emulate blood vessels of fish were produced in an aluminium alloy using additive manufacturing technology. Thermal performance of the novel tube design was experimentally investigated in a counter flow tube-in-shell heat exchanger in a range of Reynolds numbers from 1000 to 2500. Correlations for the Nusselt number and friction factor for each tube are proposed and the experimental results show that the Nusselt number increases up to 500% in corrugated tubes compared to a straight tube. The global thermo-hydraulic performance, evaluated for the same pumping power, of the double corrugated tubes is up to 160% higher than that of a straight tube.

AB - A double corrugated tube geometry for improved heat transfer performance inspired by vascular heat exchangers found in fish such as the tuna and the opah is presented. The geometry features a cross section that varies continuously in the flow direction while maintaining a constant hydraulic diameter, which gives enhanced heat transfer at a relatively low increase in pressure drop. Five ellipse-based tubes with varying corrugation severity and period that emulate blood vessels of fish were produced in an aluminium alloy using additive manufacturing technology. Thermal performance of the novel tube design was experimentally investigated in a counter flow tube-in-shell heat exchanger in a range of Reynolds numbers from 1000 to 2500. Correlations for the Nusselt number and friction factor for each tube are proposed and the experimental results show that the Nusselt number increases up to 500% in corrugated tubes compared to a straight tube. The global thermo-hydraulic performance, evaluated for the same pumping power, of the double corrugated tubes is up to 160% higher than that of a straight tube.

KW - Vascular heat exchanger

KW - Double corrugation

KW - High performance heat transfer devices

KW - Biomimetic

KW - Modified Wilson plot

KW - Nusselt number correlation

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