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Experimental study of heat transfer characteristics of an impinging jet solar air heater with fins

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Abstract

The current article unleashes an experimental research in context to a solar air heater in which jet impingement technique has been simultaneously used with array of fins. An earnest attempt has been made to depict the significance of important geometrical parameters, namely fin spacing ratio, jet diameter ratio, and stream-wise pitch ratio, on the heat transfer of this new duct. The experiments were conducted for a range of mass flow rate, \(\dot{m}\) = 0.056–0.112 kg/s, and Reynolds number (Re) = 5700–11,700. It is observed that heat transfer rate is certainly enhanced by this excellent idea which substantiates the novelty of this research. The experimental results are validated with reference to the smooth (conventional type) solar air heater. The distribution of enhancement factor with Reynolds number as a function of above-mentioned geometrical parameters has been presented. A substantial enhancement in heat transfer of the order 2.5 times has been reported in comparison with the simple flat-plate (conventional type) duct at the higher values of Reynolds number. The experimental data collected are accessed to derive a correlation for the Nusselt number as a function of relevant geometrical and operational parameters of the duct.

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Abbreviations

A c :

Area of SAH (m)

C p :

Heat capacity of air (J kg−1 K−1)

D :

Holes diameter (m)

h :

Heat transfer coefficient (Wm−2 K−2)

I :

Solar radiation intensity (Wm−2)

k :

Conductivity (thermal) (Wm−1 K−1)

D h :

Hydraulic diameter

X :

Stream-wise pitch

w :

Fin spacing

\(\dot{m}\) :

Mass flow rate of air (kg s m−2)

T :

Temperature (°K)

D e :

Hydraulic diameter of the upper duct

Y :

Span-wise pitch

L f :

Fin length

t f :

Thickness of fins

Re :

Reynolds number

Nu :

Nusselt number

a:

Air

j:

Jet plate

p:

Plate (absorber)

o:

Outlet

i:

Inlet

a2 :

Upper duct

f:

Fins

References

  • Belusko, M., Saman, W., & Bruno, F. (2008). Performance of jet impingement in unglazed air collectors. Solar Energy,82(5), 389–398.

    Article  CAS  Google Scholar 

  • Chauhan, R., & Thakur, N. S. (2013). Heat transfer and friction factor correlation for jet impingement jet solar air heater. Experimental Thermal and Fluid Science,44, 760–768.

    Article  Google Scholar 

  • Chauhan, R., & Thakur, N. S. (2014). Investigation of thermo-hydraulic efficiency of impinging jet solar air heater. Experimental Thermal and Fluid Science,68, 255–261.

    Google Scholar 

  • Choudhury, C., & Garg, H. P. (1991). Evaluation of a jet plate solar air heater. Solar Energy,46(4), 199–209.

    Article  Google Scholar 

  • Garg, H. P., Datta, G., & Bhargava, A. K. (1989). Performance studies on a finned-air heater. Energy,14, 87–92.

    Article  Google Scholar 

  • Goel, A. K., & Singh, S. N. (2017a). Performance studies of a jet plate solar air heater with longitudinal fins. International Journal of Ambient Energy, 40(2), 119–127.

    Article  Google Scholar 

  • Goel, A. K., & Singh, S. N. (2017b). Thermal performance of solar air heater using jet impingement technique with longitudinal fins. Journal of Scientific & Industrial Research,76, 780–784.

    Google Scholar 

  • Hong, S.-H., & Chung, B.-J. (2016). Variations of the optimal fin spacing according to Prandtl number in natural convection. International Journal of Thermal Sciences,101, 1–8.

    Article  Google Scholar 

  • Kline, S. J., & Mc Klintok, F. A. (1953). Describing uncertainties in single experiments. Mechanical Engineering,75, 3–8.

    Google Scholar 

  • Metzer, D. E., Florschuetz, L. W., Takeuchi, D. I., Behee, R. D., & Berry, R. A. (1979). Heat transfer characteristics for inline hole and staggered array of circular jets with cross—Flow of spent air. ASME Journal of Heat Transfer,101(3), 526–531.

    Article  Google Scholar 

  • Mohammadi, K., & Sabzpooshani, M. (2013). Comprehensive performance evaluation and parametric studies of single pass solar air heater with fins and baffles attached over the absorber plate. Energy,57, 741–750.

    Article  Google Scholar 

  • Nayak, R. K., & Singh, S. N. (2016). Effect of geometrical aspects on the performance of jet plate solar air heater. Solar Energy,137, 434–440.

    Article  Google Scholar 

  • Thombre, S., & Sukhatme, S. P. (1991). Turbulent flow and friction factor characteristics of shrouded fin arrays with uninterrupted fins. Experimental Thermal and Fluid Science,10, 338–346.

    Google Scholar 

  • Xing, Y., Sebastian, S., & Bernhard, W. (2010). Experimental and numerical investigation of heat transfer characteristics of inline and staggered arrays of impinging jets. Journal of Heat Transfer-ASME,132(9), 234–245. https://doi.org/10.1115/1.4001633.

    Article  Google Scholar 

  • Yadav, V., Baghel, K., Kumar, R., & Kadam, S. T. (2016). Numerical investigation of heat transfer in extended surface Micro channels. International Journal of Heat and Mass Transfer,93, 612–622.

    Article  CAS  Google Scholar 

  • Zukowski, M. (2015). Experimental investigations of thermal and flow characteristics of a novel micro-jet air solar heater. Applied Energy,142, 10–20.

    Article  Google Scholar 

Download references

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Authors and Affiliations

  1. Department of Mechanical Engineering, IIT (ISM), Dhanbad, 826001, JH, India

    Abhishek Kumar Goel & S. N. Singh

  2. Department of Mechanical Engineering, ABES EC, Ghaziabad, 201009, UP, India

    Abhishek Kumar Goel

Authors
  1. Abhishek Kumar Goel
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  2. S. N. Singh
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Correspondence to Abhishek Kumar Goel.

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Goel, A.K., Singh, S.N. Experimental study of heat transfer characteristics of an impinging jet solar air heater with fins. Environ Dev Sustain 22, 3641–3653 (2020). https://doi.org/10.1007/s10668-019-00360-1

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  • DOI: https://doi.org/10.1007/s10668-019-00360-1

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