PLIF measurement of the time-resolved temperature field distribution around the fins of a thermoacoustic heat exchanger in oscillatory flow

Lei Shi, Zhibin Yu, Artur J. Jaworski

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

1 Citation (Scopus)

Abstract

In thermoacoustic devices, two heat exchangers ("hot" and "cold") impose a temperature gradient within the " regenerator" or "stack", where the thermoacoustic effect takes place. Unfortunately, heat transfer characteristics of the heat exchangers in an acoustically induced oscillatory flow are not very well understood. Most handbook data are for heat exchangers in steady flow, few relevant experiments and calculations have been done for heat exchangers in oscillating flow. This paper investigates the temperature field around fins of a pair of model heat exchangers in the oscillatory flow, using acetone-based Planar Laser Induced Fluorescence (PLIF). The hot and cold heat exchanger fins are kept at constant temperatures by virtue of resistive heating and water cooling, respectively. The temperature field distributions for the whole acoustic cycle have been achieved. The time-dependent local convection heat transfer coefficients are also estimated from the temperature gradients in the thermal boundary layer.

Original languageEnglish
Title of host publication16th International Congress on Sound and Vibration 2009, ICSV 2009
Pages1861-1868
Number of pages8
Volume3
Publication statusPublished - 1 Dec 2009
Externally publishedYes
Event16th International Congress on Sound and Vibration - Krakow, Poland
Duration: 5 Jul 20099 Jul 2009
http://www.wikicfp.com/cfp/servlet/event.showcfp?eventid=4380&copyownerid=2 (Link to Conference Information)

Conference

Conference16th International Congress on Sound and Vibration
Abbreviated titleICSV 2009
CountryPoland
CityKrakow
Period5/07/099/07/09
Internet address

Fingerprint

fins
heat exchangers
laser induced fluorescence
temperature distribution
temperature gradients
thermoacoustic effects
oscillating flow
handbooks
thermal boundary layer
regenerators
liquid cooling
steady flow
heat transfer coefficients
acetone
convection
heat transfer
cooling
cycles
heating
acoustics

Cite this

Shi, L., Yu, Z., & Jaworski, A. J. (2009). PLIF measurement of the time-resolved temperature field distribution around the fins of a thermoacoustic heat exchanger in oscillatory flow. In 16th International Congress on Sound and Vibration 2009, ICSV 2009 (Vol. 3, pp. 1861-1868)
Shi, Lei ; Yu, Zhibin ; Jaworski, Artur J. / PLIF measurement of the time-resolved temperature field distribution around the fins of a thermoacoustic heat exchanger in oscillatory flow. 16th International Congress on Sound and Vibration 2009, ICSV 2009. Vol. 3 2009. pp. 1861-1868
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abstract = "In thermoacoustic devices, two heat exchangers ({"}hot{"} and {"}cold{"}) impose a temperature gradient within the {"} regenerator{"} or {"}stack{"}, where the thermoacoustic effect takes place. Unfortunately, heat transfer characteristics of the heat exchangers in an acoustically induced oscillatory flow are not very well understood. Most handbook data are for heat exchangers in steady flow, few relevant experiments and calculations have been done for heat exchangers in oscillating flow. This paper investigates the temperature field around fins of a pair of model heat exchangers in the oscillatory flow, using acetone-based Planar Laser Induced Fluorescence (PLIF). The hot and cold heat exchanger fins are kept at constant temperatures by virtue of resistive heating and water cooling, respectively. The temperature field distributions for the whole acoustic cycle have been achieved. The time-dependent local convection heat transfer coefficients are also estimated from the temperature gradients in the thermal boundary layer.",
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Shi, L, Yu, Z & Jaworski, AJ 2009, PLIF measurement of the time-resolved temperature field distribution around the fins of a thermoacoustic heat exchanger in oscillatory flow. in 16th International Congress on Sound and Vibration 2009, ICSV 2009. vol. 3, pp. 1861-1868, 16th International Congress on Sound and Vibration , Krakow, Poland, 5/07/09.

PLIF measurement of the time-resolved temperature field distribution around the fins of a thermoacoustic heat exchanger in oscillatory flow. / Shi, Lei; Yu, Zhibin; Jaworski, Artur J.

16th International Congress on Sound and Vibration 2009, ICSV 2009. Vol. 3 2009. p. 1861-1868.

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

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Shi L, Yu Z, Jaworski AJ. PLIF measurement of the time-resolved temperature field distribution around the fins of a thermoacoustic heat exchanger in oscillatory flow. In 16th International Congress on Sound and Vibration 2009, ICSV 2009. Vol. 3. 2009. p. 1861-1868