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An analytical model to predict the thermal performance of a novel parallel flow packed bed solar air heater

Author

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  • Dhiman, Prashant
  • Thakur, N.S.
  • Kumar, Anoop
  • Singh, Satyender

Abstract

A design of a parallel flow solar air heater with packed material in its upper channel and capable of providing a higher heat flux compared to the conventional non-porous bed double flow systems is presented. An analytical model describing the various temperatures and heat transfer characteristics of such a parallel flow packed bed solar air heater (PFPBSAH) has been developed and employed to study the effects of the mass flow rate and varying porosities of the packed material on its thermal performance. The model employs an iterative solution procedure to solve the governing energy balance equations describing the complex heat and mass exchanges involved. To validate the proposed analytical model, comparisons between theoretical and experimental results showed that good agreement is achieved with reasonable accuracy. Also, PFPBSAH is found to perform more efficiently than the conventional non-porous double flow solar air heaters with 10-20% increase in its thermal efficiency. Furthermore, the effect of the fraction of mass flow rate in the upper or lower flow channel of PFPBSAH device on its performance, has also investigated theoretically. The fraction of the mass flow rate in the respective channels of the PFPBSAH is shown to be dominant parameter in determining the effective thermal efficiency of the heater.

Suggested Citation

  • Dhiman, Prashant & Thakur, N.S. & Kumar, Anoop & Singh, Satyender, 2011. "An analytical model to predict the thermal performance of a novel parallel flow packed bed solar air heater," Applied Energy, Elsevier, vol. 88(6), pages 2157-2167, June.
  • Handle: RePEc:eee:appene:v:88:y:2011:i:6:p:2157-2167
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    References listed on IDEAS

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    1. Yeh, Ho-Ming & Ho, Chii-Dong & Hou, Jun-Ze, 1999. "The improvement of collector efficiency in solar air heaters by simultaneously air flow over and under the absorbing plate," Energy, Elsevier, vol. 24(10), pages 857-871.
    2. Ozgen, Filiz & Esen, Mehmet & Esen, Hikmet, 2009. "Experimental investigation of thermal performance of a double-flow solar air heater having aluminium cans," Renewable Energy, Elsevier, vol. 34(11), pages 2391-2398.
    3. Sodha, M. S. & Bansal, N. K. & Singh, D., 1982. "Analysis of a non-porous double-flow solar air heater," Applied Energy, Elsevier, vol. 12(4), pages 251-258, December.
    4. Cortés, A. & Piacentini, R., 1990. "Improvement of the efficiency of a bare solar collector by means of turbulence promoters," Applied Energy, Elsevier, vol. 36(4), pages 253-261.
    5. Yeh, H.-M. & Ho, C.-D. & Hou, J.-Z., 2002. "Collector efficiency of double-flow solar air heaters with fins attached," Energy, Elsevier, vol. 27(8), pages 715-727.
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    Citations

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    Cited by:

    1. repec:eee:renene:v:116:y:2018:i:pa:p:728-740 is not listed on IDEAS
    2. Rajarajeswari, K. & Sreekumar, A., 2016. "Matrix solar air heaters – A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 57(C), pages 704-712.
    3. repec:eee:rensus:v:79:y:2017:i:c:p:779-793 is not listed on IDEAS
    4. Kumar, Anil & Kim, Man-Hoe, 2017. "Solar air-heating system with packed-bed energy-storage systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 72(C), pages 215-227.
    5. repec:eee:renene:v:112:y:2017:i:c:p:378-387 is not listed on IDEAS
    6. Amori, Karima E. & Abd-AlRaheem, Mustafa Adil, 2014. "Field study of various air based photovoltaic/thermal hybrid solar collectors," Renewable Energy, Elsevier, vol. 63(C), pages 402-414.
    7. Sabzpooshani, M. & Mohammadi, K. & Khorasanizadeh, H., 2014. "Exergetic performance evaluation of a single pass baffled solar air heater," Energy, Elsevier, vol. 64(C), pages 697-706.
    8. Yang, Tingting & Athienitis, Andreas K., 2015. "Experimental investigation of a two-inlet air-based building integrated photovoltaic/thermal (BIPV/T) system," Applied Energy, Elsevier, vol. 159(C), pages 70-79.
    9. Lalji, Mukesh Kumar & Sarviya, R.M. & Bhagoria, J.L., 2012. "Exergy evaluation of packed bed solar air heater," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(8), pages 6262-6267.
    10. Singh, Satyender & Dhiman, Prashant, 2014. "Thermal and thermohydraulic performance evaluation of a novel type double pass packed bed solar air heater under external recycle using an analytical and RSM (response surface methodology) combined ap," Energy, Elsevier, vol. 72(C), pages 344-359.
    11. Singh, Satyender & Dhiman, Prashant, 2016. "Thermal performance of double pass packed bed solar air heaters – A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 1010-1031.
    12. Ravi, Ravi Kant & Saini, Rajeshwer Prasad, 2016. "A review on different techniques used for performance enhancement of double pass solar air heaters," Renewable and Sustainable Energy Reviews, Elsevier, vol. 56(C), pages 941-952.

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