The Comparison Study of Radiative and Convective Heat Transfer in a Room Air Ventilation

환기구를 가진 실내공간에서 복사 및 대류열전달의 비교 연구

  • 정효민 (경상대학교 선박기계공학과) ;
  • 정한식 (경상대학교 선박기계공학과) ;
  • 김경근 (한국해양대학교 기관공학부)
  • Published : 1997.06.01

Abstract

The comparison of radiative and convective heat transfer in a room air ventilation is investi¬gated by a numerical simulation. The room air temperature distributions with radiation are appeared more uniform than without radiation at Gr= 1460 and Re=50. The mean Nusselt number in the radiative heat transfer shows less value than convective heat transfer. The total mean Nusselt number is found Wall 1> Wall 3${\fallingdotseq}$Wall 2 7 Wall 4.

Keywords

References

  1. Numerical Heat Transfer v.15 Natural Convection and Radiation in a Square Enclosure A. Yucel;S. Acharya;M. L. Williams
  2. Journal of Heat Transfer v.112 A Finite-Volume Method for Predicting a Radiant Heat Transfer in Enclosures with Participating Media G. D. Raithby;E. H. Chui
  3. Journal of Heat Transfer v.113 Thermal Radiation, Convection and Convection in Porous Media Contained in Two-Dimensional Vertical Cavities C. Bouallou;J. F. Sacadura
  4. Journal of Heat Transfer v.114 Effect of Index of Refraction on Radiation Characteristics in a Heated Absorbing, Emitting and Scattering Layer R. Siegel;C. M. Spuckler
  5. Journal of Heat Transfer v.105 Radiation-Natural Convaction Interactions in Two-Dimensional Complex Enclosures L. C. Chang;K. T. Yang;J. R. Lloyd
  6. ASHRAE Trans v.65 A New Method for Calculating Radiant Heat Exchanger B. Geghart
  7. Proceedings of ASHRAE, Symposium on Building Systems Numerical Prediction of Room Air Distribution Effects of Calculation Procedures at Fluid-Solid Interfaces J. Onishi;S. Tanaka;K. Naito
  8. Proceedings of 2nd International Conference on Engineering Aerodynamics and Thermodynamics of Ventilations (Room Vent '90) Applicability and Limitations of a Numerical Method in Thermal Environment Analysis for Air-Conditioned Rooms J. Onishi;M. Kurimura;S. Tanaka