COMBINED CONVECTION HEAT TRANSFER THROUGH RECTANGULAR DUCT

Authors

  • Narendra Narve Mechanical Engg, Department,FTC College of engg and research,Sangola,India
  • Ganesh Agalave Mechanical Engg, Department,WalchandInstt of Technology,India
  • Dhnananjay Misal CodemidTechnology Pune India
  • Bhaskar Gaikwad Department of Mecahnical Engineeirng, SVERI COE Pandharpur

Keywords:

Combined convection ,, buoyancy effect ,, duct,wall

Abstract

A convective mode of heat transfer plays an important role in many engineering applications. Combined convection heat transfer involves with free convection heat transfer effects on forced convection. Sidewalls and bottom surface of the duct were subjected to uniform heat flux while top surface was adiabatic.Test section was incorporated with 27 copper constantan thermocouple to measure wall temperatures & 12 to determine heat loss. The range of parameters used were – Gr=105 to 107 , Re = 1000-2300 and Pr=0.7.Air was used as working fluid .From experimental outcome shows that value of Grashof number and Reynolds numbers for air were are considerably greater than the pure forced convection values in the downstream side of flow. It was observed experimentally wall temperature distribution is varying in sidewalls and bottom side. Temperatures are higher on bottomsie than sidewall.

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Published

2022-07-03

Issue

2022: NCRTSAE -JUNE

Section

Articles

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