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Falling film evaporation on a thermal spray metal coated vertical corrugated plate conduits.

Number: pap. 2044

Author(s) : EBANESAR J. R., MANI A.

Summary

In falling film evaporation process, the heat is transferred from the condensing fluid to the liquid flowing over it. Tube geometry and tube size have an important role on the performance of the falling film evaporators. This paper presents a two dimensional CFD study of water falling film evaporation on a thermal spray metal coated vertical corrugated conduits. Two-phase flow simulation is done by using a finite volume method based commercial software, using k-? equations with shear stress transport (SST). Sinusoidal corrugations with different porosity have been selected for the study. Evaporation and heat transfer during falling film evaporation are included through user defined functions (UDFs). Effect of Reynolds number, wall superheat and surface roughness on heat transfer coefficient is presented. Numerical results are compared with the results of horizontal circular tube falling film evaporation from literature. An enhancement of film heat transfer coefficient of at least 15% is observed for the vertical corrugated plate conduits.

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Pages: 9 p.

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Details

  • Original title: Falling film evaporation on a thermal spray metal coated vertical corrugated plate conduits.
  • Record ID : 30018916
  • Languages: English
  • Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2016/07/11

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