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Experimental and numerical study on heat transfer of gas cooler under the optimal discharge pressure.

Auteurs : QIN X., ZHANG D., ZHANG F., GAO Z., WEI X.

Type d'article : Article de la RIF

Résumé

This paper focuses on the heat transfer of gas cooler under optimal discharge pressure. Compared with experimental results, the scale of CO2 temperature dropping is found smaller in simulation. To make the model data more accurate, previous studies emphasized the modification of the heat transfer coefficient from the CO2 side, which is considerably higher than the water side. Through the analysis of LMTD and principle of cask effect, it is concluded that the heat transfer coefficient of water has a greater effect on the gas cooler model than that of CO2. Based on Buckingham PI analysis and its experimental results, a new dimensionless correlation on the water temperature rise was obtained. When calculating the heat transfer coefficient of water side with this correlation, the average error ratio exhibited a relative decline of about 10.26% (for temperature °C). The squared correlation coefficient of about 0.97815 also indicated a significant improvement on the accuracy of the model. The revised model can provide a reliable basis for the new gas cooler design.

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Format PDF

Pages : 229-239

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    20 €

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Détails

  • Titre original : Experimental and numerical study on heat transfer of gas cooler under the optimal discharge pressure.
  • Identifiant de la fiche : 30027397
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 112
  • Date d'édition : 04/2020
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.12.026

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