Study on thermal performance enhancement in rectangular duct heat exchanger installed with staggered baffle

Authors

  • Sompol Skullong Energy System Research Group, Department of Mechanical Engineering, Faculty of Engineering at Sriracha, Kasetsart University Sriracha Campus, Thung Sukhla, Sriracha
  • Supattarachai Suwannapan Department of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Isan, Khonkaen Campus
  • panuwat hoonpong Department of Mechanical Technology, Faculty of Industrial Technology, Thepsatri Rajabhat University

Keywords:

staggered baffle, heat exchanger, friction loss, thermal performance enhancement

Abstract

The research studies on thermal performance enhancement and friction loss behavior in a constant heat - fluxed rectangular duct heat exchanger installed with staggered baffle. The experiments were carried out by varying the airflow rate for Reynolds number from 5300 to 24,000. Several staggered baffle characteristics were introduced such as baffle pitch to duct height ratio (P/H = PR = 1), baffle to duct height ratio (e/H = BR = 0.1, 0.2, 0.3 and 0.4) and baffle attack angle (α = 45°). The effect of BR on heat transfer friction loss behaviors and thermal enhancement factor was experimentally investigated. The heat transfer and friction loss were presented in terms of Nusselt number and friction factor respectively. The experimental results reveal that the rectangular duct installed staggered baffle with BR = 0.4 provides higher heat transfer and friction loss than the other cases, while the duct with BR = 0.2 yields the highest thermal enhancement factor is about 1.59.

References

P. Promthaisong and P. Promvonge, “Thermal behaviors in solar air heater channel with v-shaped trapexoidal-ribs on absorber plate,” Engineering Transactions, vol 21, no. 1, pp. 62–80, 2018.

C. Prasopsuk, W.Chingtuaythong, P. Promvonge, S. Wittayapiyanon and S. Skullong, “Heat transfer and friction in solar air heater duct with curved-winglet roughness on absorber plate,” in Me-nett 31st, Nakhon Nayok, Thailand, Jul. 4–7, 2017, pp. 1161–1168.

S. Skullong, “Performance Enhancement in a Solar air heater duct with inclined ribs mounted on the absorber,” Journal of Research and Applications in Mechanical Engineering, vol. 5, no. 1, pp. 55–64, 2017, doi: 10.14456/jrame.2017.5.

S. Skullong, P. Promvonge, C. Thianpong and M. Pimsarn, “Thermal Performance in Solar Air Heater Channel with Combined Wavy-groove and Perforated-delta Wing Vortex Generators,” Applied Thermal Engineering, vol. 100, pp. 611–620, 2016, doi: 10.1016/j.applthermaleng.2016.01.107.

S. Skullong, C. Thianpong and P. Promvonge, “Effects of rib size and arrangement on forced convective heat transfer in a solar air heater channel,” Heat Mass Transfer, vol. 51, pp. 475–1485, 2015, doi: 10.1007/s00231-015-1515-5.

D. Jin, M. Zhang, P. Wang and S. Xu, “Numerical investigation of heat transfer and fluid flow in a solar air heater duct with multi V-shaped ribs on the absorber plate,” Energy, vol. 89, pp. 178–190, 2015, doi: 10.1016/j.energy.2015.07.069.

S. Chokphoemphun, S. Hongkong, S. Thongdaeng and S. Chokphoemphun, “Experimental study and neural networks prediction on thermal performance assessment of grooved channel air heater,” International Journal of Heat and Mass Transfer vol. 163, 2020, Art. no. 120397, doi: 10.1016/j.ijheatmasstransfer.2020.120397.

P. Promvonge and S. Skullong, “Enhanced heat transfer in rectangular duct with punched winglets,” Chinese Journal of Chemical Engineering, vol. 28, no. 3, pp. 660–671, 2020, 10.1016/j.cjche.2019.09.012.

P. Promthaisong, P. Hoonpong, P. Eiamsa-ard, N. Koolnapadol, P. Promvonge and S. Skullong, “Experimental Investigation on Thermal Performance in a Solar Air Heater with Ribbed Absorber Plate,” Journal of Renewable Energy for Community, vol. 5, no. 1, pp. 80–89, 2022.

A. Kumar, R. P. Saini and J. S. Saini, “Development of correlations for Nusselt number and friction factor for solar air heater with roughened duct having multi v-shaped with gap ribs as artificial roughness,” Renewable Energy, vol. 58, pp. 151–163, 2013, doi: 10.1016/j.renene.2013.03.013.

S. Tamna, S.Skullong, C. Thianpong and P. Promvonge, “Heat transfer behaviors in a solar air heater channel with multiple V-baffle vortex generators,” Solar Energy, vol. 110, pp. 720–735, 2014, doi: 10.1016/j.solener.2014.10.020.

P. Hoonpong and S. Skullong, “Performance improvement of solar air heater with v-baffles on absorber plate,” Journal of Research and Applications in Mechanical Engineering, vol. 6, no. 1, pp. 29–39, 2018, doi: 10.14456/jrame.2018.4.

H. Xiao, Z. Dong, Z. Liu and W. Liu, “Heat transfer performance and flow characteristics of solar air heaters with inclined trapezoidal vortex generators,” Applied Thermal Engineering, vol. 179, 2020, Art. no. 115484, doi: 10.1016/j.applthermaleng.2020.115484.

Z. Dong, P. Liu, H. Xiao, Z. Liu and W. Liu, “A study on heat transfer enhancement for solar air heaters with ripple surface,” Renewable Energy, vol. 172, pp. 477–487, 2021, doi: 10.1016/j.renene.2021.03.042.

P. Promvonge and S. Skullong, “Heat transfer in solar receiver heat exchanger with combined punched-V-ribs and chamfer-V-grooves,” International Journal of Heat and Mass Transfer, vol. 143, pp. 1–15, 2019, doi: 10.1016/j.ijheatmasstransfer.2019.118486.

P. Promvonge and S. Skullong, “Thermal characteristics in solar air duct with V-shaped flapped-baffles and chamfered-grooves,” International Journal of Heat and Mass Transfer, vol. 172, 2021, Art. no. 121220, doi: 10.1016/j.ijheatmasstransfer.2021.121220.

P. Promvonge, P. Promthaisong and S. Skullong, “Numerical heat transfer in a solar air heater duct with punched delta-winglet vortex generators,” Case studies in thermal engineering, vol. 26, 2021, Art. no. 101088, doi: 10.1016/j.csite.2021.101088.

N. Jayranaiwachira, P. Promvonge and S. Skullong, “Thermal-hydraulic performance of solar receiver duct with inclined punched-ribs and grooves,” Case Studies in Thermal Engineering, vol. 39, 2022, Art. no. 102437, doi: 10.1016/j.csite.2022.102437.

M. T. Baissi, A. Brima, K. Aoues, R. Khanniche and N. Moummi, “Thermal behavior in a solar air heater channel roughened with delta-shaped vortex generators,” Applied Thermal Engineering, vol. 165, 2020, Art. no. 113563, doi: 10.1016/j.applthermaleng.2019.03.134

R.J. Moffat, “Describing the uncertainties in expertmental results,” Thermal and Fluid Science, vol. 1, no. 1, pp. 3–17, 1988, doi: 10.1016/0894-1777(88)90043-X.

F. P. Incropera, D. P. Dewitt, T. L. Bergman and A. S. Lavine, “Internal Flow,” in Fundamentals of Heat and Mass Transfer, Hoboken, NJ, USA: John-Wiley & Sons, 2006, ch. 8, sec. 8.5–8.10, pp. 514–532.

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Published

2023-03-31

How to Cite

[1]
S. . Skullong, S. Suwannapan, and panuwat hoonpong, “Study on thermal performance enhancement in rectangular duct heat exchanger installed with staggered baffle”, Eng. & Technol. Horiz., vol. 40, no. 1, pp. 115–125, Mar. 2023.

Issue

Vol. 40 No. 1 (2023): January-March

Section

Research Articles

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