Estimating the impact of the thermo-physical properties of the multilayer soil on earth-air heat exchanger system performance

被引：0
作者：
Ali M.H. [1 ,2 ,3 ]
Kurjak Z. [2 ]
Beke J. [2 ]
机构：
[1] Mechanical Engineering Doctoral School, Hungarian University of Agriculture and Life Science, Pater K. u. 1, Gödöllő
[2] Institute of Technology, Szent Istvan Campus, Hungarian University of Agriculture and Life Science, Gödöllő
[3] Department of Mechanical Engineering, Faculty of Engineering, University of Kufa, Al-Najaf
来源：
International Journal of Thermofluids | 2024年 / 23卷
关键词：
Earth-air heat exchanger; Ground temperature; Mixture soil; Multilayer soil; Soil thermo-physical properties; Soil type effect;
D O I：
10.1016/j.ijft.2024.100722
中图分类号：
学科分类号：
摘要：
This study developed a new method for experimentally measuring and estimating multilayer soil thermo-physical properties. It also tested how multi-layered soil influences an earth-air heat exchanger (EAHE) system in Gödöllő, Hungary. Thus, this research has introduced these combination characteristics that increase EAHE system performance by properly estimating soil multi-layer properties and thermal gradients and their thermal performance effects. New laboratory and theoretical methods can evaluate multilayer soil thermal and physical properties depending on moisture content and density. The first layer had the lowest soil moisture content (6.10 %), the fifth layer had the highest (12.8 %), and the mixed layer had the middle value (9.12 %). The densities of these soil types ranged from 930.49 to 1184.03 kg/m3. When installing the EAHE system, the second layer is better for cooling purposes. Third-layer soil pipe air is 3.74 % hotter than second-layer air. Mixed soil heats and cools moderately. It is 1.74 % hotter and 2 % colder than the second and third layers of soil, respectively. © 2024
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