Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis on Surface Temperature Control of an Insulated Vertical Wall Under Thermal Radiation Environment

단열재가 부착된 수직벽 표면의 온도제어 해석

  • Kang, Byung-Ha (School of Mechanical Engineering, Kookmin University) ;
  • Pi, Chang-Hun (Department of Mechanical Engineering, Graduate School of Kookmin University) ;
  • Kim, Suk-Hyun (School of Mechanical Engineering, Kookmin University)
  • 강병하 (국민대학교 기계시스템공학부) ;
  • 피창헌 (국민대학교 대학원) ;
  • 김석현 (국민대학교 기계시스템공학부)
  • Received : 2011.10.20
  • Published : 2012.04.10
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, a rational procedures for estimation of insulation thickness of a vertical wall for condensation control or personnel protection has been investigated. Design parameters are height of the wall, thermal conductivity, emissivity, and operating temperatures. The results indicated that the surface emissivity plays a very important role in the design of insulation for the purpose of surface temperature control, especially in natural convection situation. radiation heat transfer coefficients for some new insulation material surface, such as elastomers, estimated to be more than 90% of the total surface heat transfer coefficient.

Keywords

References

  1. Kim, H. K., 1976, Study on thermal properties of heat insulation materials in Korea, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 5, No. 2, pp. 98-107.
  2. Yoon, K. S. and Lee, K. Y., 2008, A suitable thickness of flexible elastometic foam, Proceedings of the SAREK Winter Annual Conference, pp. 429-433.
  3. Korean Standards, F2803, 2006, Standard practice for thermal insulation works.
  4. The Ministry of Construction and Transportation, 01030(heat insulation), 2005, Mechanical Standard Specification, pp 51-71.
  5. Sahin, A. Z. and Kalyon, M., 2005, Maintaining uniform surface temperature along pipes by insulation, Energy, Vol. 30, No. 5, pp. 637-647. https://doi.org/10.1016/j.energy.2004.05.020
  6. Li, Y. F. and Chow W. K., 2005, Optimum insulation-thickness for thermal and freezing protection, Applied Energy, Vol. 80, No. 1, pp. 23-33. https://doi.org/10.1016/j.apenergy.2004.02.009
  7. Lee, H. K. and Kim, M. J., 1985, A study on thermal performance of external masonry wall structures by using foamed plastic as thermal insulation materials, Korean Journal of the Architectural Insitute of Korea, Vol. 5, No. 2, pp. 267-270.
  8. Ahn, C. H. and Kong, S. H., 2007, A study on the interpretation of surface condensation depending on piping materials, Korean Journal of the Society of Living Environment System, Vol. 14, No. 3, pp. 171-179.
  9. Kang, B. H., Pi C. H., and Kim, S., 2011, Nondimensionalized analysis on surface temperature control of an insulated vertical wall, International Journal of Air Conditioning and Refrigeration, Vol. 19, No. 2, pp. 99-105. https://doi.org/10.1142/S201013251100048X
  10. Kang, B. H., Pi, C. H., and Kim, S., 2011, Surface Temperature Control of an Insulated Horizontal Pipe under Thermal Radiation Environment, Korean Journal of Air Conditioning and Refrigeration Engineering, Vol. 23, No. 1, pp. 54-60. https://doi.org/10.6110/KJACR.2011.23.1.054
  11. Churchill, S. W. and Chu, H. H. S., 1975, Correlating equations for laminar and turbulent free convection from a vertical plate, Vol. 18, pp. 1323-1329. https://doi.org/10.1016/0017-9310(75)90243-4