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Analysis of distributed thermal management policy for energy-efficient processing of materials by natural convection

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  • Kaluri, Ram Satish
  • Basak, Tanmay

Abstract

Natural convection is the governing phenomena in many material processing applications. The conventional method of uniform heating at the bottom wall of an enclosure may result in inadequate thermal mixing and poor temperature distribution leading energy wastage. In this work, an alternative, energy-efficient method of distributed heating of the cavity is studied and compared with the isothermal bottom wall heating case in enhancing the thermal mixing and improving the temperature distribution in the cavity. Steady laminar natural convection of various fluids of industrial importance (Pr=0.015, 07, 10, 1000) in the range of Ra=103–105 is studied in a differentially heated cavity and in two cases of discretely heated square cavities. Detailed analysis is carried out by visualizing the heat flow by heatlines. The thermal mixing and temperature uniformity in each case are quantified in terms of cup-mixing temperature and root-mean square deviation (RMSD), respectively. It is found that thermal management policy of distributed heating significantly influences the thermal mixing and temperature uniformity in the enclosures. In a case with multiple discrete heat sources, a remarkable uniformity in temperature across the cavity is achieved with moderate thermal mixing.

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  • Kaluri, Ram Satish & Basak, Tanmay, 2010. "Analysis of distributed thermal management policy for energy-efficient processing of materials by natural convection," Energy, Elsevier, vol. 35(12), pages 5093-5107.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:12:p:5093-5107
    DOI: 10.1016/j.energy.2010.08.006
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    1. Chen, D.T. & Chaturvedi, S.K. & Mohieldin, T.O., 1994. "An approximate method for calculating laminar natural convective motion in a trombe-wall channel," Energy, Elsevier, vol. 19(2), pages 259-268.
    2. Barthels, H. & Rehm, W. & Jahn, W., 1991. "Theoretical and experimental investigations into the safety behavior of small HTRs under natural convection conditions," Energy, Elsevier, vol. 16(1), pages 371-380.
    3. Kheireddine, A.S. & Sanda, M.Houla & Chaturvedi, S.K. & Mohieldin, T.O., 1997. "Numerical prediction of pressure loss coefficient and induced mass flux for laminal natural convective flow in a vertical channel," Energy, Elsevier, vol. 22(4), pages 413-423.
    4. Bosbach, Johannes & Pennecot, Julien & Wagner, Claus & Raffel, Markus & Lerche, Thomas & Repp, Stefan, 2006. "Experimental and numerical simulations of turbulent ventilation in aircraft cabins," Energy, Elsevier, vol. 31(5), pages 694-705.
    5. Pangavhane, Dilip R. & Sawhney, R.L. & Sarsavadia, P.N., 2002. "Design, development and performance testing of a new natural convection solar dryer," Energy, Elsevier, vol. 27(6), pages 579-590.
    6. Elshafei, E.A.M., 2010. "Natural convection heat transfer from a heat sink with hollow/perforated circular pin fins," Energy, Elsevier, vol. 35(7), pages 2870-2877.
    7. da Silva, A.K. & Lorente, S. & Bejan, A., 2006. "Constructal multi-scale structures for maximal heat transfer density," Energy, Elsevier, vol. 31(5), pages 620-635.
    8. Diaconu, Bogdan M. & Varga, Szabolcs & Oliveira, Armando C., 2010. "Experimental study of natural convection heat transfer in a microencapsulated phase change material slurry," Energy, Elsevier, vol. 35(6), pages 2688-2693.
    9. Abu-Hijleh, B.A/K & Abu-Qudais, M & Abu Nada, E, 1999. "Numerical prediction of entropy generation due to natural convection from a horizontal cylinder," Energy, Elsevier, vol. 24(4), pages 327-333.
    10. Bala, B.K. & Woods, J.L., 1995. "Optimization of natural-convection, solar drying systems," Energy, Elsevier, vol. 20(4), pages 285-294.
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    Cited by:

    1. Biswal, Pratibha & Basak, Tanmay, 2014. "Bejan's heatlines and numerical visualization of convective heat flow in differentially heated enclosures with concave/convex side walls," Energy, Elsevier, vol. 64(C), pages 69-94.
    2. Das, Debayan & Lukose, Leo & Basak, Tanmay, 2018. "Role of multiple solar heaters along the walls for the thermal management during natural convection in square and triangular cavities," Renewable Energy, Elsevier, vol. 121(C), pages 205-229.
    3. Liu, Di & Zhao, Fu-Yun & Wang, Han-Qing, 2011. "Passive heat and moisture removal from a natural vented enclosure with a massive wall," Energy, Elsevier, vol. 36(5), pages 2867-2882.
    4. Saidi, Majid & Karimi, Gholamreza, 2014. "Free convection cooling in modified L-shape enclosures using copper–water nanofluid," Energy, Elsevier, vol. 70(C), pages 251-271.

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