Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Evaluation of Thermal Comfort and Cooldown Performance inside Automotive Cabin according to Air-conditioning Vent Location

인체모델을 고려한 자동차 실내의 에어컨 토출구 위치 변화에 따른 냉방성능 및 온열쾌적성 평가

  • Seo, Jin-Won (Department of Mechanical Engineering, Graduated School, Ajou University) ;
  • Park, Jae-Hong (Mechanical Engineering R&D Lab, LIG Nex1 Co. Ltd.) ;
  • Choi, Yun-Ho (Department of Mechanical Engineering, Ajou University)
  • 서진원 (아주대학교 대학원 기계공학과) ;
  • 박재홍 (LIG 넥스원 기계연구센터) ;
  • 최윤호 (아주대학교 기계공학과)
  • Received : 2012.01.18
  • Accepted : 2012.04.23
  • Published : 2012.09.01
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Abstract

As the recent advancement of automobile industry, there has been a great interest in the thermal comfort of the passengers inside the cabin of an automobile. Thermal comfort is affected by temperature, velocities, and mean radiation temperature of air, thermal resistance of clothes and physical active level of human. The present study performed computational analysis to select the location of air-conditioning vent that improves thermal comfort inside the cabin. In order to do this, we considered various air vent positions, and thermal flow analysis of each case is performed using CFD for the cabin with four passengers. The thermal comfort is evaluated using the computational results and the optimum location of air vent is suggested.

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References

  1. M. Kazuhiko, "Environmental Evaluation of the Indoor Thermal of Vehicle," J-EAST, Vol.78, pp.5-11, 2004.
  2. T. Y. Han, L. Huang, S. Kelly, C. Huizenga and H. Zhang, "Virtual Thermal Comfort Engineering," SAE 2001-01-0588, 2001.
  3. J. Currie and J. Maus, "Numerical Study of the Influence of Air Vent Area and Air Mass Flux on the Thermal Comfort of Car Occupants," SAE 2000-01-0980, 2000.
  4. C. H. Lin, T. Han and C. A. Koromilas, "Effects of HVAC Design Parameters on Passenger Thermal Comfort," SAE 980264, 1998.
  5. S. H. Hong, Thermal Comfort in Automotive, M. S. Thesis, KAIST, Daejeon, Korea, 2006.
  6. B. J. Yeon, Analysis of Thermal Comfort in the Train and Development of 2-dimensional Model, M. S. Thesis, KAIST, Daejeon, Korea, 2007.
  7. W. G. Park and M. H. Kim, "Evaluation of Thermal Comfort in a Low Floor Bus," KSAE 30th Anniversary Conference, KSAE, KSAE 08-S0162, pp.980-985, 2008.
  8. Y. K. Kim, J. S. Yang, J. H. Baek, K. C. Kim and H. S. Ji, "Numerical Analysis on the Initial Cool-down Performance Inside an Automobile for the Evaluation of Passenger's Thermal Comfort," Transactions of KSAE, Vol.18, No.5, pp.115-123, 2010.
  9. J. H. Park, J. W. Seo and Y. H. Choi, "Using Numerical Simulation to Improve Thermal Comfort for Automotive Air-conditioning Vent Location Optimization," Annual Conference Proceedings, KSAE, KSAE11-A0093, pp.515- 521, 2011.
  10. H. Zhang, L. Dai, G. Xu, W. Chen and W. Tao, "Studies of Air-flow and Temperature Fields inside a Passenger Compartment for Improving Thermal Comfort and Saving Energy. Part I : Test/numerical model and Validation," Applied Thermal Engineering, Vol.29, pp.2022-2027, 2009. https://doi.org/10.1016/j.applthermaleng.2008.10.005
  11. ASHRAE Handbook Fundamental Ch. 8. Thermal Comfort, ASHRAE, 2005.
  12. T. Claus, P. V. Nielsen and D. N. Sørensen, "Application of Computer Simulated Persons in Indoor Environmental Modeling," ASHRAE Transactions, Vol.108, Pt.2, pp.1084-1089, 2002.
  13. ISO Standard 7730, 3rd Edn., ISO, 2005
  14. P. O. Fanger, Thermal Comfort, McGraw-Hill, New York, 1972.
  15. A. Dufton, "The Equivalent Temperature of a Warmed Room," JIHVE(Building Services: Now the Journal of CIBSE), UK, Vol.4, pp.227- 229, 1936.
  16. T. L. Madsen, B. W. Olesen and N. K. Kristensen, "Comparison between Operative and Equivalent Temperature under Typical Indoor Conditions," ASHRAE Transactions, Vol.90, Pt.1, pp.1077-1090, 1984.
  17. H. Nilsson, I. Holmer, M. Bohm and O. Noren, "Definition and Theoretical Back Ground of the Equivalent Temperature," Int. ATA Conference, 1999A4082, pp.17-19, 1999.
  18. H. Nilsson, "Comfort Climate Evaluation with Thermal Manikin Methods and Computer Simulation Models," National Institute for Working Life, pp.64-65, 2004.
  19. S. H. Ho, L. Rosario and M. M. Rahman, "Thermal Comfort Enhancement by Using a Ceiling Fan," Applied Thermal Engineering, Vol.29, pp.1648-1659, 2009. https://doi.org/10.1016/j.applthermaleng.2008.07.015

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