# Graphing Behaviour of Heat Transfer In Terms of Nusselt and Reynolds

## Authors

• Mohd Rahimie Md Noor Department of Mathematics, Universiti Teknologi Mara Kelantan
• Nur Syafiqah Hidayah Mohd Fauzi Department of Mathematics, Universiti Teknologi Mara Kelantan
• Siti Nur Fadhilah Masrom Department of Mathematics, Universiti Teknologi Mara Kelantan
• Mohd Azry Abdul Malek Department of Statistics, Universiti Teknologi Mara Kelantan
• Muhammad Firdaus Mustapha Department of Computer Science, Universiti Teknologi Mara Kelantan
• Ahmad Bukhari Mohd Yasin Department of Business, Universiti Teknologi Mara Kelantan

## DOI:

#### Keywords:

Reynolds, Nusselt and Prandtl number, LMTD, Heat Transfer

#### Abstract

Heat exchangers are tools used to transfer thermal energy between two fluids (liquid or gas) by convection and conduction at different level of temperatures. Heat exchangers are the common equipment and employed in many different applications because of ability to withstand high temperatures and compactness. There are no intermixing or leakage occurred between two fluids during the heat transfer process as fluids are separated by walls of heat exchanger. The main objective of this project is to determine the heat exchanger effectiveness in heat transfer performance. This will be done by investigating the performance of five different angles of heat exchanger which are 150,300, 450, 600 and 750. The effectiveness of heat exchanger depends on the convection heat transfer coefficient of the fluid. Besides that, this project also aims to develop some parameters such as Nusselt number, Reynolds number and Prandtl number for evaluating the heat transfer. It is found that the Nusselt Number at angle of 150 is lower compared to angle of 750. Meanwhile, Reynolds number for angle 150 is higher than angle 750 which means that the type of flow produced by angle 150 is turbulent flow while for 750 angle is laminar flow. Hence, the overall result of this project proved that 150 is the best angle for heat exchanger in chimney because of higher velocity, higher volume flow rate, higher density of gas and higher LMTD. The relationship between Nusselt number and Reynolds number between different angles can be observed by plotting the graph using Maple Software.

## References

Al-Sammarraie, A. T., & Vafai, K. (2017, Aug). Heat transfer augmentation through convergence angles in a pipe. Numerical Heat Transfer Part A – Applications, 72(3),197-214. Doi : 10.1080/10407782.2017.1372670

Ayani, M. B. (2016). Numerical Investigation of the Effect of Geometrical Shape of Plate Heat Exchangers on Heat Transfer Efficiency. International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, 10, 872-876. Retrieved from https://www.researchgate.net/publication/ 324026378

Ayub, Z. H. (2003, sep). Plate heat exchanger literature survey and new heat transfer and pressure drop correlations for refrigerant evaporators. Heat Transfer Engineering, 24(5), 3–16. doi: 10.1080/01457630304056

Ayub, Z. H., Ayub, A. H., Ribatski, G., Moreira, T. A., & Khan, T. S. (2017). Two-phase pressure drop and flow boiling heat transfer in an enhanced dimpled tube with a solid round rod insert. International Journal of Refrigeration, 75(C), 1-13. doi: 10.1016/ j.ijrefrig.2017.01.008

Barasa, W. A., & Samson, K. (2014). Designing a boiler chimney heat recovery system against fouling. Journal of Department of Mechanical and Manufacturing Engineering, 6, 165-199. Retrieved from http://www.novapdf.com

Fernandes, C. S., Dias, R. P., Nóbrega, J. M., & Maia, J. M. (2008). Friction factors of power-law fluids in chevron-type plate heat exchangers. Journal of Food Engineering, 89(4), 441 - 447. doi: https://doi.org/10.1016/ j.jfoodeng.2008.05.022

Ikegami, Y., Mutair, S., & Kawabata, Y. (2015, mar). Experimental and Numerical Investigations on Plate-Type Heat Exchanger Performance. Open Journal of Fluid Dynamics, 05(01), 92–98. doi: 10.4236/ojfd.2015.51011

Premkumar, S.D., Swaminadhan, P. & Rao, B. S. (2016). Optimization of corrugation angle for the heat transfer performance of corrugated plate heat exchangers. International Research Journal of Engineering and Technology (IRJET), 03, 924-929. Retrieved from https://pdfs.semanticscholar.org

Zhang, D., Yang, Y., Pan, M., & Gao, Z. (2011). Toward a heat recovery Chimney. Sustainability, 3(11), 2115–2128. doi: 10.3390/su3112115

2021-04-01

## How to Cite

Md Noor, M. R., Mohd Fauzi, N. S. H. ., Masrom, S. N. F. ., Abdul Malek, M. A. ., Mustapha, M. F., & Mohd Yasin, A. B. . (2021). Graphing Behaviour of Heat Transfer In Terms of Nusselt and Reynolds . Journal of Computing Research and Innovation, 6(2), 43–54. https://doi.org/10.24191/jcrinn.v6i2.198

## Section

General Computing