New laser based method for non-intrusive measurement of available energy loss and local entropy production

Naterer, G.F.; Adeyinka, O. B.

doi:10.1016/j.expthermflusci.2006.03.021

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…Experimental studies of convective heat transfer have used various methods of measurement, including thermocouples, fluxmeters and other sensors. Adeyinka and Naterer [11] utilized methods of particle image velocimetry and particle induced fluorescence, which could be extended to entropy production measurements [12]. Jang and Jeong [13] installed thermocouples within a compressor to measure convective heat transfer rates in a refrigeration system.…”

Section: Introductionmentioning

confidence: 99%

Experimental correlation of forced convection heat transfer from a NACA airfoil

Wang

Bibeau

Naterer

2007

Experimental Thermal and Fluid Science

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Section: Introductionmentioning

confidence: 99%

Experimental correlation of forced convection heat transfer from a NACA airfoil

Wang

Bibeau

Naterer

2007

Experimental Thermal and Fluid Science

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“…Yataghene et al [85] and Yashar et al [86] conducted similar studies characterising the flow field in heat exchangers with PIV. The nature of the measurement technique allowed Naterer and Adeyinka [87] to employ PIV data to develop a model to determine energy losses and local entropy production.…”

Section: Experimental Characterisation Of Heat Exchangers | 19mentioning

confidence: 99%

Aerothermal Characterisation of Surface Heat Exchangers for Turbofans

Felgueroso Rodríguez

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Measurement of Entropy Generation in Microscale Thermal-Fluid Systems

Saffaripour

Culham

2010

Journal of Heat Transfer

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A new nonintrusive and whole field method for the measurement of entropy generation in microscale thermal-fluid devices is presented. The rate of entropy generation is a measure of the thermodynamic losses or irreversibilities associated with viscous effects and heat transfer in thermal-fluid systems. This method provides the entropy generation distribution in the device, thus enabling the designers to find and modify the areas producing high energy losses characterized by large entropy production rates. The entropy generation map is obtained by postprocessing the velocity and temperature distribution data, measured by micro particle image velocimetry and laser induced fluorescence methods, respectively. The velocity and temperature measurements lead to the frictional and thermal terms of entropy generation. One main application of this method is optimizing the efficiency of microchannel heatsinks, used in cooling of electronic devices. The minimum amount of entropy generation determines the optimum design parameters of heatsinks, leading to highest heat removal rates and at the same time, the lowest pressure drop across the heatsink. To show the capability of this technique, the entropy generation field in the transition region between a 100 μm wide and a 200 μm wide rectangular microchannel is measured. This method is used to measure thermal and frictional entropy generation rates in three different flow area transition geometries. The results can be used to determine which geometry has the highest thermal and hydraulic efficiencies.

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New laser based method for non-intrusive measurement of available energy loss and local entropy production

Cited by 3 publications

References 15 publications

Experimental correlation of forced convection heat transfer from a NACA airfoil

Experimental correlation of forced convection heat transfer from a NACA airfoil

Aerothermal Characterisation of Surface Heat Exchangers for Turbofans

Measurement of Entropy Generation in Microscale Thermal-Fluid Systems

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