Methodology Allying Standard Penetration Test and Era-Interim Data Set for Numerical Simulations of Earth-Air Heat Exchangers

Authors

  • Lucas Costa Victoria School of Engineering, Federal University of Rio Grande - FURG, km 8 Itália Avenue, Rio Grande, Brazil
  • Vinicius de Freitas Hermes Ocean Engineering (PPGEO), Federal University of Rio Grande - FURG, km 8 Itália Avenue, Rio Grande, Brazil
  • Joaquim Vaz School of Engineering, Federal University of Rio Grande - FURG, km 8 Itália Avenue, Rio Grande, Brazil
  • William Correa Marques Computational Modeling (PPGMC), Federal University of Rio Grande - FURG, km 8 Itália Avenue, Rio Grande, Brazil
  • Luiz Alberto Oliveira Rocha Mechanical Engineering, University of Vale do Rio dos Sinos (Unisinos), 950 Unisinos Avenue, São Leopoldo, Brazil
  • Elizaldo Domingues dos Santos Ocean Engineering (PPGEO), Federal University of Rio Grande - FURG, km 8 Itália Avenue, Rio Grande, Brazil
  • Michel Kepes Rodrigues Ocean Engineering (PPGEO), Federal University of Rio Grande - FURG, km 8 Itália Avenue, Rio Grande, Brazil
  • Cesare Biserni Department of Industrial Engineering, Alma Mater Studiorum - University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy
  • Liércio André Isoldi Computational Modeling (PPGMC), Federal University of Rio Grande - FURG, km 8 Itália Avenue, Rio Grande, Brazil

Keywords:

Earth-air heat exchanger, renewable energy, finite volume method (fvm), computational modeling

Abstract

Earth-Air Heat Exchangers (EAHE) are devices installed on buildings to reduce electrical energy consumption with air conditioner systems. They consist of buried ducts where the air is blown and induces heat exchange with the surrounding soil. Computational modeling plays an important role in the study of EAHE. However, there is no well?defined methodology for the determination of soil characteristics and air and soil surface temperature boundary conditions for performing numerical simulations. Aiming to fill this gap, the main goal here is to develop a consistent and universal methodology to numerically simulate EAHE installations submitted to realistic soil and temperature conditions. It is proposed to combine the Standard Penetration Test (SPT) information and the Era-Interim reanalysis temperature data. In order to validate this methodology, the results obtained by a computational model based on the Finite Volume Method (FVM) were compared with experimental in-situ data reaching a mean error of 0.03 °C, a root mean squared error of 0.93 °C, a mean absolute percentage error of 4.20%, and a Pearson correlation coefficient of 0.98. The validation indicated that the proposed methodology could be adequately adopted for EAHE numerical simulations, allowing a reliable adoption of the soil characteristics assignment from SPT reports and the prescription as boundary conditions of inlet air temperature and soil surface temperature from ERA/Interim data.

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Published

2024-03-28

How to Cite

Lucas Costa Victoria, Vinicius de Freitas Hermes, Joaquim Vaz, William Correa Marques, Luiz Alberto Oliveira Rocha, Elizaldo Domingues dos Santos, Michel Kepes Rodrigues, Cesare Biserni, & Liércio André Isoldi. (2024). Methodology Allying Standard Penetration Test and Era-Interim Data Set for Numerical Simulations of Earth-Air Heat Exchangers. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 76(2), 43–64. Retrieved from https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/6969

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