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성층축열조의 성능에 대한 설계인자의 영향
Effect of Design Factors on the Performance of Stratified Thermal Storage Tank

정재동   (세종대학교 기계공학과UU0000792  ); 박주혁   (한국에너지기술연구원CC0186897  ); 조성환   (한국에너지기술연구원CC0186897  );
  • 초록

    This study is to systematically analyze the effect of various kinds of design factors on the performance of stratified thermal storage tank. Taguchi method, known as a very reasonable tool in the parametric study, is employed in the present work. Three dimensional unsteady numerical experiment is conducted for 4 design parameters of stratified thermal storage tank: inlet Reynolds number, Froude number, diffuser size d with 3 levels (Re=400, 800, 1200, Fr=0.5, 1.0, 2.0 and d=150 mm, 200mm, 300 mm) and diffuser shape with 2 levels. Orthogonal array $L_{18}(2{\times}3^7)$ is adopted for the analysis of variance. The result gives quantitative estimation of the various design parameters affecting the performance and helps to select the main factors for the optimum design of stratified thermal storage tank. Reynolds number is found to be the most dominant parameter and the diffuser shape plays significant role on the performance of stratified thermal storage tank. Based on this finding, the prior questions on the contribution of the diffuser shape proposed by the authors become clear. The optimum condition for the performance is a set of d=300mm, Re=800, and radial regulated plate diffuser. Conformation test shows the repeatability in the analysis and $1.3\%$ difference between the estimated thermocline thickness and that of numerical result.


  • 주제어

    다구치방법 .   분산분석 .   성층축열조 .   온도경계층 두께.  

  • 참고문헌 (10)

    1. Yoo, J I., 1989, Air-conditioning with chilledwater thermal storage, Mag. Soc. Air-Cond,and Refrig. Eng. Korea, Vol. 18, No.5, pp.427-436 
    2. Chung, J. D., Park, J. and Cho, S. H., 2004,Effect of diffuser shape on the performance of water-chilled heat storage, Korean J. of Air-Conditioning and Refrigeration Engineering,Vol. 16, No.4, pp.374-382 
    3. Dincer, I. and Rosen, M. A., 2002, Thermal Energy Storage, John Wiley & Sons, England 
    4. Park, J T., 2003, Development of present status and prospect of unutilized energy,Proc. of the SAREK '03 Winter Annual Conference, pp. 398-403. 
    5. Musser, A. and Bahnfleth, W. P., 2001, Parametric study of charging inlet diffuser performance in stratified chilled water storage tanks with radial diffusers: Part 1- Model development and validation, ASHRAE Transactions:Research, Vol. 107, pp.22-40 
    6. Zurigat, Y. H., Liche, P. R. and Ghajar, A. J,1991, Influence of inlet geometry on mixing in thermocline thermal energy storage, Int.J Heat Mass Transfer, Vol. 34, pp. 115-125 
    7. Musser, A. and Bahnfleth, W. P., 1998, Evolution of temperature distributions in a fullscale stratified chilled-water storage tank with radial diffusers, ASHRAE Transactions:Research, Vol. 104, pp.55-67 
    8. Yoo, H. and Pak, E. T., 1995, Analytical solutions to a one-dimensional model for stratified thermal storage tanks, Korean J.of Air-Conditioning and Refrigeration Engineering,Vol. 7, No.1, pp.42-51 
    9. Cho, S. H., Tae, C. S., lang, C. Y, Lee, C. K,Yang, S. H. and Kang, H. K, 2003, Experimental study on stratification according to diffuser shape in the rectangular thermal storage tank, Proc. of the SAREK '03 Summar Annual Conference, pp.20-24 
    10. Park, S. H., 1996, Robust Design and Analysis for Quality Engineering, Chapman &Hall, London, UK 
  • 이 논문을 인용한 문헌 (2)

    1. Choi, Yong-Don ; Kang, Yong-Tae ; Kim, Nae-Hyun ; Kim, Man-Hoe ; Park, Kyoung-Kuhn ; Park, Byung-Yoon ; Park, Jin-Chul ; Hong, Hi-Ki 2007. "Recent Progress in Air Conditioning and Refrigeration Research - A Review of Papers Published in the Korean Journal of Air-Conditioning and Refrigeration Engineering in 2004 and 2005 -" 설비공학논문집 = Korean journal of air-conditioning and refrigeration engineering, 19(1): 94~131     
    2. Son, Hyo Seok ; Hong, Hiki 2014. "The Effect of a Manifold in a Storage Tank Applied to a Solar Combisystem" 설비공학논문집 = Korean journal of air-conditioning and refrigeration engineering, 26(7): 322~328     

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