Effect of temperature difference and radial distance of single nozzle pulsed air jet on heat transfer enhancement

Rozli Zulkifli, Ahmad Fadhil Ismail, Shahrir Abdullah

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Pulsed air jet is a very interesting new research area due to its contribution towards heat and mass transfer enhancement and has a potential for future industrial application. It has been proven that pulsed air jet has better heat transfer performance compared with steady air jet system for certain flow geometry under certain conditions only. The objective of this paper is to study the effect of temperature difference and flow pulsation on the heat transfer performance of a single nozzle pulsed jet impingement system. In this study, three Reynolds number (Nu) (5500, 11000, and 16000) have been chosen to represent the turbulent air flow onto a copper impingement plate with a nozzle outlet diameter of 20 mm. Temperature difference (ΔT) of 0, 25, 50, 75, and 90°C have been used to study the effect of temperature difference. Measurement were taken at different radial distance to nozzle outlet diameter ratio (r/d), different pulse frequencies of 20 Hz and 40 Hz and at a fixed plate to nozzle distance ratio (z/d) of 4. It's found that Nusselt number (Nu) increases as the Reynolds number increases and Nusselt number (Nu) decreases as ΔT decreases. At Reynolds number of 16000, r/d of 0 and ΔT of 0, highest Nusselt number of 45.42 has been obtained.

Original languageEnglish
Title of host publicationProceedings - 2012 7th International Conference on Computing and Convergence Technology (ICCIT, ICEI and ICACT), ICCCT 2012
Pages1407-1412
Number of pages6
Publication statusPublished - 2012
Event2012 7th International Conference on Computing and Convergence Technology (ICCIT, ICEI and ICACT), ICCCT 2012 - Seoul
Duration: 3 Dec 20125 Dec 2012

Other

Other2012 7th International Conference on Computing and Convergence Technology (ICCIT, ICEI and ICACT), ICCCT 2012
CitySeoul
Period3/12/125/12/12

Fingerprint

Nozzles
Nusselt number
Heat transfer
Reynolds number
Air
Temperature
Industrial applications
Mass transfer
Copper
Geometry

Keywords

  • Heat Transfer
  • Jet Impingement System
  • Pulsed Air Jet
  • Radial Distance
  • Temperature Difference

ASJC Scopus subject areas

  • Computer Science Applications
  • Software

Cite this

Zulkifli, R., Ismail, A. F., & Abdullah, S. (2012). Effect of temperature difference and radial distance of single nozzle pulsed air jet on heat transfer enhancement. In Proceedings - 2012 7th International Conference on Computing and Convergence Technology (ICCIT, ICEI and ICACT), ICCCT 2012 (pp. 1407-1412). [6530561]

Effect of temperature difference and radial distance of single nozzle pulsed air jet on heat transfer enhancement. / Zulkifli, Rozli; Ismail, Ahmad Fadhil; Abdullah, Shahrir.

Proceedings - 2012 7th International Conference on Computing and Convergence Technology (ICCIT, ICEI and ICACT), ICCCT 2012. 2012. p. 1407-1412 6530561.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zulkifli, R, Ismail, AF & Abdullah, S 2012, Effect of temperature difference and radial distance of single nozzle pulsed air jet on heat transfer enhancement. in Proceedings - 2012 7th International Conference on Computing and Convergence Technology (ICCIT, ICEI and ICACT), ICCCT 2012., 6530561, pp. 1407-1412, 2012 7th International Conference on Computing and Convergence Technology (ICCIT, ICEI and ICACT), ICCCT 2012, Seoul, 3/12/12.
Zulkifli R, Ismail AF, Abdullah S. Effect of temperature difference and radial distance of single nozzle pulsed air jet on heat transfer enhancement. In Proceedings - 2012 7th International Conference on Computing and Convergence Technology (ICCIT, ICEI and ICACT), ICCCT 2012. 2012. p. 1407-1412. 6530561
Zulkifli, Rozli ; Ismail, Ahmad Fadhil ; Abdullah, Shahrir. / Effect of temperature difference and radial distance of single nozzle pulsed air jet on heat transfer enhancement. Proceedings - 2012 7th International Conference on Computing and Convergence Technology (ICCIT, ICEI and ICACT), ICCCT 2012. 2012. pp. 1407-1412
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