Paper Details

STUDY OF THE EFFECT OF MOISTURE CONTENT ON THE THERMAL PROPERTIES OF SOIL IN THE TECHNICAL COLLEGE / NAJAF

Vol. 7, Jan-Dec 2021 | Page: 99-103

Waleed Abdulhamza Akser
Department of Power and Mechanics Engineering, Engineering Technical College, Al-Furat Al-Awsat Technical University (ATU), Najaf, Iraq.

Received: 25-09-2021, Accepted: 28-10-2021, Published Online: 06-11-2021


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Abstract

In the face of changing known conditions such as global warming, thermal diffusivity is a physical property represented by the thermal characteristics of the soil. The heat transfer and temperature change in the surface layers of the soil at a depth of 2 m were investigated using a vertical heat exchanger in the sandy mixed soil in Najaf and according to location . For one day at a temperature of 40 degrees Celsius and a flow of 0.5 liters per minute, the best thermal diffusivity was obtained, ranging 0.006251554 to 0.006625955 m2 /sec. At a temperature of 40 degrees Celsius and a flow rate of 1 liter per minute, the best thermal performance coefficient was achieved.

References

  1. Y. L. E. Law and S. B. Dworkin, “Characterization of the effects of borehole configuration and interference with long term ground temperature modelling of ground source heat pumps,” Appl. Energy, vol. 179, pp. 1032–1047, 2016, doi: 10.1016/j.apenergy.2016.07.048.
  2. M. Li, K. Zhu, and Z. Fang, “Analytical methods for thermal analysis of vertical ground heat exchangers,” Adv. Ground-Source Heat Pump Syst., pp. 158–183, 2016, doi: 10.1016/B978-0-08-100311-4.00006-6
  3. V. H. M. Danelichen, M. S. Biudes, M. C. Souza, N. G. Machado, L. F. A. Curado, and J. S. Nogueira, “Soil Thermal Diffusivity of a Gleyic Solonetz Soil Estimated by Different Methods in the Brazilian Pantanal,” Open J. Soil Sci., vol. 03, no. 01, pp. 15–22, 2013, doi: 10.4236/ojss.2013.31003
  4. W. Y. Zhang and J. Wei, “Analysis on the soil heat accumulation problem of ground source heat pump system in high temperature and high humidity areas,” Energy Procedia, vol. 14, pp. 198–204, 2012, doi: 10.1016/j.egypro.2011.12.917.
  5. H. Y. Zeng, N. R. Diao, and Z. H. Fang, “A finite line-source model for boreholes in geothermal heat exchangers,” Heat Transf. - Asian Res., vol. 31, no. 7, pp. 558–567, 2002, doi: 10.1002/htj.10057
  6. L. Lamarche and B. Beauchamp, “New solutions for the short-time analysis of geothermal vertical boreholes,” Int. J. Heat Mass Transf., vol. 50, no. 7–8, pp. 1408–1419, 2007, doi: 10.1016/j.ijheatmasstransfer.2006.09.007.
  7. Y. Viswanadham and R. Ramanadham, “The thermal diffusivity of red sandy soil at Waltair,” Pure Appl. Geophys. PAGEOPH, vol. 74, no. 1, pp. 195–205, 1969, doi: 10.1007/BF00875198.