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Development of fourier-reynolds correlations for cooling parameters

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  • Dincer, Ibrahim

Abstract

Fourier and Reynolds correlations are presented for determining the values of thermal parameters defined in terms of the half cooling times and seven-eighths cooling times for spheres and cylinders being cooled in air or water flows. In this respect, an experimental, modeling and literature-survey investigation was conducted. In the experiments, several spheres and cylinders were cooled in air and water flows, and their centre temperatures measured. In the modeling part, a methodology was used to determine the cooling parameters, and using experimental data, together with some experimental data from the literature, the following Fourier-Reynolds correlations for half and seven-eighths cooling times were developed: Fos = 0·3693Re-0·11871 and Foz = 1·2951Re-0·16003 respectively for water-cooling applications; Fos = 42·465Re-0·54426 and Foz = 125·21Re-0·53913 respectively for air-cooling applications. The results of the present study show that there is a strong relationship between the Fourier and Reynolds numbers, and the developed Fourier-Reynolds correlations reasonably determine the cooling thermal parameters for spherical or cylindrical bodies cooled in water and air flows. These correlations could be of benefit in the refrigeration industry.

Suggested Citation

  • Dincer, Ibrahim, 1995. "Development of fourier-reynolds correlations for cooling parameters," Applied Energy, Elsevier, vol. 51(2), pages 125-138.
    • Handle: RePEc:eee:appene:v:51:y:1995:i:2:p:125-138
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    1. Dincer, Ibrahim, 1993. "Heat-transfer coefficients in hydrocooling of spherical and cylindrical food products," Energy, Elsevier, vol. 18(4), pages 335-340.
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    1. Dincer, Ibrahim & Dost, Sadik, 1995. "Thermal diffusivities of geometrical objects subjected to cooling," Applied Energy, Elsevier, vol. 51(2), pages 111-118.

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