article · Results in Engineering · 2024
Computational fluid dynamic simulation of earth air heat exchanger: A thermal performance comparison between series and parallel arrangements
Sarwo Edhy Sofyan, Teuku Meurah Indra Riayatsyah, Khairil KHAİRİL, Eric Hu, Akram Tamlicha, Teuku Muhammad Reza Pahlefi, H.B. Aditiya
Cited by 11Open access
Abstract
This study uses Ansys Fluent to compare the thermal performance of series and parallel earth air heat exchanger (EAHE) systems for cooling. The model was validated using experimental data from published literature and matched simulation results. The sensitivity study examined how length, diameter, and ground surface coverings affected EAHE performance. The relationship between effectiveness and the Number Transfer Unit (NTU) of EAHE was explored along with the soil thermal regime. The simulation results show that the series EAHE can achieve a lower temperature drop than parallel. With an input air temperature of 32 °C and EAHE lengths varying from 10 m to 50 m (in 10 m increments), the 50 m EAHE produced the lowest outlet air temperatures: 27.2 °C for the series configuration and 28.8 °C for the parallel arrangement. Changing the EAHE diameter (4–6 in) results in a ±0.2 °C outlet air temperature drop for both setups. EAHE performed best under short grass soil cover, yielding 1.4 °C and 0.5 °C lower outlet air temperatures, for series and parallel arrangements than the asphalt cover. The pressure drop increased proportionally with EAHE's length. Simulation results indicate a ±6 times larger pressure loss in the series design compared to the parallel setup. The effectiveness-NTU relationship shows that parallel EAHEs are 15 % more effective than series ones. • 3-D CFD simulation models were developed to investigate the thermal performance of both series and parallel EAHEs. • Sensitivity analysis has been conducted to investigate the effect of design parameters and soil surface covers. • Prediction of the soil temperature profile next to EAHE is presented. • The pressure drop is six times higher in series pipes than in parallel pipes. • The effectiveness-NTU study found parallel EAHEs 15 % more effective than series.
Cite this paper
Sofyan, S. E., Riayatsyah, T. M. I., KHAİRİL, K., Hu, E., Tamlicha, A., Pahlefi, T. M. R., & Aditiya, H. (2024). Computational fluid dynamic simulation of earth air heat exchanger: A thermal performance comparison between series and parallel arrangements. Results in Engineering, 24, 102932. https://doi.org/10.1016/j.rineng.2024.102932
Sofyan, Sarwo Edhy, et al. “Computational fluid dynamic simulation of earth air heat exchanger: A thermal performance comparison between series and parallel arrangements.” Results in Engineering, vol. 24, 2024, p. 102932, https://doi.org/10.1016/j.rineng.2024.102932.
Sofyan, Sarwo Edhy, Teuku Meurah Indra Riayatsyah, Khairil KHAİRİL, Eric Hu, Akram Tamlicha, Teuku Muhammad Reza Pahlefi, and H.B. Aditiya. 2024. “Computational fluid dynamic simulation of earth air heat exchanger: A thermal performance comparison between series and parallel arrangements.” Results in Engineering 24: 102932. https://doi.org/10.1016/j.rineng.2024.102932.
Sofyan, S.E. et al. (2024) ‘Computational fluid dynamic simulation of earth air heat exchanger: A thermal performance comparison between series and parallel arrangements’, Results in Engineering, 24, p. 102932. Available at: https://doi.org/10.1016/j.rineng.2024.102932.
@article{sofyan2024computational,
title = {{Computational fluid dynamic simulation of earth air heat exchanger: A thermal performance comparison between series and parallel arrangements}},
author = {Sofyan, Sarwo Edhy and Riayatsyah, Teuku Meurah Indra and KHAİRİL, Khairil and Hu, Eric and Tamlicha, Akram and Pahlefi, Teuku Muhammad Reza and Aditiya, H.B.},
journal = {Results in Engineering},
volume = {24},
pages = {102932},
year = {2024},
doi = {10.1016/j.rineng.2024.102932}
}Made from the index record. Check names, capitalisation and page numbers against the paper. Need another style? AI for Research has over 10,000.