PLIF measurement of instantaneous temperature field within thermoacoustic heat exchangers

Lei Shi, Zhibin Yu, Artur J. Jaworski

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

5 Citations (Scopus)

Abstract

A typical standing-wave thermoacoustic device consists of a stack of parallel plates sandwiched between the cold and hot heat exchangers, which are placed in an appropriately designed acoustic resonator. The cold and hot heat exchangers work as a heat sink and heat source, respectively, which allows the thermoacoustic energy conversion to take place in the stack. Unfortunately, the performance of heat exchangers in the oscillatory flow is difficult to predict, as most of the available handbook data relate to steady flows, while the experimental studies are very limited. This paper investigates the temperature field around the fins of a pair of model heat exchangers placed in an acoustic resonator, using acetone-based Planar Laser Induced Fluorescence (PLIF). The fins are kept at constant temperatures by virtue of resistive heating and water cooling, respectively. The overall objective of the work is to develop reliable measurement methods to obtain the time-dependent local convection heat transfer coefficients and ultimately the corresponding Nusselt numbers estimated from the temperature gradients in the thermal boundary layer. Some preliminary results comprising the instantaneous temperature distributions within the flow field are presented together with estimates of heat flux calculations to illustrate the methodology. A discussion of measurement accuracy and future work to improve the measurement technique proposed is provided.

LanguageEnglish
Title of host publicationSociety for Experimental Mechanics - SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2009
Pages221-230
Number of pages10
Volume1
Publication statusPublished - 1 Dec 2009
Externally publishedYes
EventSociety for Experimental Mechanics Annual Conference and Exposition on Experimental and Applied Mechanics - Albuquerque, United States
Duration: 1 Jun 20094 Jun 2009

Conference

ConferenceSociety for Experimental Mechanics Annual Conference and Exposition on Experimental and Applied Mechanics
Abbreviated titleSEM
CountryUnited States
CityAlbuquerque
Period1/06/094/06/09

Fingerprint

Thermoacoustics
Heat exchangers
Temperature distribution
Fluorescence
Acoustic resonators
Lasers
Heat sinks
Cooling water
Steady flow
Nusselt number
Energy conversion
Acetone
Thermal gradients
Heat transfer coefficients
Heat flux
Flow fields
Boundary layers
Heating
Temperature
Hot Temperature

Cite this

Shi, L., Yu, Z., & Jaworski, A. J. (2009). PLIF measurement of instantaneous temperature field within thermoacoustic heat exchangers. In Society for Experimental Mechanics - SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2009 (Vol. 1, pp. 221-230)
Shi, Lei ; Yu, Zhibin ; Jaworski, Artur J. / PLIF measurement of instantaneous temperature field within thermoacoustic heat exchangers. Society for Experimental Mechanics - SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2009. Vol. 1 2009. pp. 221-230
@inproceedings{2604bebd2d1e4983b6ac5fa401edabaf,
title = "PLIF measurement of instantaneous temperature field within thermoacoustic heat exchangers",
abstract = "A typical standing-wave thermoacoustic device consists of a stack of parallel plates sandwiched between the cold and hot heat exchangers, which are placed in an appropriately designed acoustic resonator. The cold and hot heat exchangers work as a heat sink and heat source, respectively, which allows the thermoacoustic energy conversion to take place in the stack. Unfortunately, the performance of heat exchangers in the oscillatory flow is difficult to predict, as most of the available handbook data relate to steady flows, while the experimental studies are very limited. This paper investigates the temperature field around the fins of a pair of model heat exchangers placed in an acoustic resonator, using acetone-based Planar Laser Induced Fluorescence (PLIF). The fins are kept at constant temperatures by virtue of resistive heating and water cooling, respectively. The overall objective of the work is to develop reliable measurement methods to obtain the time-dependent local convection heat transfer coefficients and ultimately the corresponding Nusselt numbers estimated from the temperature gradients in the thermal boundary layer. Some preliminary results comprising the instantaneous temperature distributions within the flow field are presented together with estimates of heat flux calculations to illustrate the methodology. A discussion of measurement accuracy and future work to improve the measurement technique proposed is provided.",
keywords = "Heat exchangers, PLIF, Thermoacoustics",
author = "Lei Shi and Zhibin Yu and Jaworski, {Artur J.}",
year = "2009",
month = "12",
day = "1",
language = "English",
isbn = "9781615671892",
volume = "1",
pages = "221--230",
booktitle = "Society for Experimental Mechanics - SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2009",

}

Shi, L, Yu, Z & Jaworski, AJ 2009, PLIF measurement of instantaneous temperature field within thermoacoustic heat exchangers. in Society for Experimental Mechanics - SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2009. vol. 1, pp. 221-230, Society for Experimental Mechanics Annual Conference and Exposition on Experimental and Applied Mechanics, Albuquerque, United States, 1/06/09.

PLIF measurement of instantaneous temperature field within thermoacoustic heat exchangers. / Shi, Lei; Yu, Zhibin; Jaworski, Artur J.

Society for Experimental Mechanics - SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2009. Vol. 1 2009. p. 221-230.

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

TY - GEN

T1 - PLIF measurement of instantaneous temperature field within thermoacoustic heat exchangers

AU - Shi, Lei

AU - Yu, Zhibin

AU - Jaworski, Artur J.

PY - 2009/12/1

Y1 - 2009/12/1

N2 - A typical standing-wave thermoacoustic device consists of a stack of parallel plates sandwiched between the cold and hot heat exchangers, which are placed in an appropriately designed acoustic resonator. The cold and hot heat exchangers work as a heat sink and heat source, respectively, which allows the thermoacoustic energy conversion to take place in the stack. Unfortunately, the performance of heat exchangers in the oscillatory flow is difficult to predict, as most of the available handbook data relate to steady flows, while the experimental studies are very limited. This paper investigates the temperature field around the fins of a pair of model heat exchangers placed in an acoustic resonator, using acetone-based Planar Laser Induced Fluorescence (PLIF). The fins are kept at constant temperatures by virtue of resistive heating and water cooling, respectively. The overall objective of the work is to develop reliable measurement methods to obtain the time-dependent local convection heat transfer coefficients and ultimately the corresponding Nusselt numbers estimated from the temperature gradients in the thermal boundary layer. Some preliminary results comprising the instantaneous temperature distributions within the flow field are presented together with estimates of heat flux calculations to illustrate the methodology. A discussion of measurement accuracy and future work to improve the measurement technique proposed is provided.

AB - A typical standing-wave thermoacoustic device consists of a stack of parallel plates sandwiched between the cold and hot heat exchangers, which are placed in an appropriately designed acoustic resonator. The cold and hot heat exchangers work as a heat sink and heat source, respectively, which allows the thermoacoustic energy conversion to take place in the stack. Unfortunately, the performance of heat exchangers in the oscillatory flow is difficult to predict, as most of the available handbook data relate to steady flows, while the experimental studies are very limited. This paper investigates the temperature field around the fins of a pair of model heat exchangers placed in an acoustic resonator, using acetone-based Planar Laser Induced Fluorescence (PLIF). The fins are kept at constant temperatures by virtue of resistive heating and water cooling, respectively. The overall objective of the work is to develop reliable measurement methods to obtain the time-dependent local convection heat transfer coefficients and ultimately the corresponding Nusselt numbers estimated from the temperature gradients in the thermal boundary layer. Some preliminary results comprising the instantaneous temperature distributions within the flow field are presented together with estimates of heat flux calculations to illustrate the methodology. A discussion of measurement accuracy and future work to improve the measurement technique proposed is provided.

KW - Heat exchangers

KW - PLIF

KW - Thermoacoustics

UR - http://www.scopus.com/inward/record.url?scp=73349105638&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9781615671892

VL - 1

SP - 221

EP - 230

BT - Society for Experimental Mechanics - SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2009

ER -

Shi L, Yu Z, Jaworski AJ. PLIF measurement of instantaneous temperature field within thermoacoustic heat exchangers. In Society for Experimental Mechanics - SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2009. Vol. 1. 2009. p. 221-230