THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

HEAT TRANSFER PERFORMANCE AND STRUCTURE RESPONSE OF ENERGY PILES

ABSTRACT
Energy pile becomes a new application of foundation, instead of the traditional ground source heat pump system. The heat exchange efficiency and its structural response induced by thermal stress is an urgent issue for the usage of shallow geothermal in foundations. In this study, the field experiments are systematically carried out by using engineering test pile as energy pile, the comprehensive thermal conductivity and heat exchange rate of each pile are achieved by thermal performance tests. Then the deformation and stress-strain of a heating or cooling pile at different temperature are analyzed to explore the influence of thermal stress on pile structure. Finally, the thermal stress distribution along the pile is calculated, and its bearing capability is analyzed. The results are applied to the design and application of energy piles.
KEYWORDS
PAPER SUBMITTED: 2018-06-02
PAPER REVISED: 2018-11-11
PAPER ACCEPTED: 2018-12-04
PUBLISHED ONLINE: 2019-05-26
DOI REFERENCE: https://doi.org/10.2298/TSCI180602235Y
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE 3, PAGES [1647 - 1654]
REFERENCES
  1. Hamada, Y., et al., Field Performance of an Energy Pile System for Space Heating, Energy and Buildings, 39 (2007), 5, pp. 517-524
  2. Brandl, H., Energy Piles and Diaphragm Walls for Heat Transfer from and into the Ground, 3rd International Geotechnical Seminar on Deep Foundations on Bored and Auger Piles, Ghent, 1998, pp. 37-60
  3. Laloui, L., et al., Experimental and Numerical Investigations of the Behavior of a Heat Exchanger Pile, International Journal for Numerical and Analytical Methods in Geomechanics, 30 (2006), pp. 763-781
  4. Amataya, B. L., et al., Thermo-Mechanical Behaviour of Energy Piles, Geotechnique, 62 (2012), pp. 503-519
  5. Bourne-Webb, P. J., et al., Energy Pile Test at Lambeth College, London: Geotechnical and Thermodynamic Aspects of Pile Response to Heat Cycles, Geotechnique, 59 (2009), 3, pp. 237-248
  6. Gui, S. Q., et al., In-situ Tests on Structural Responses of Energy Piles During Heat Exchanging Process, Chinese Journal of Geotechnical Engineering, 36 (2014), 6, pp. 1087-1094
  7. You, S., et al., Experimental Study on Structural Response of CFG Energy Piles, Applied Thermal Engineering, 96 (2016), pp. 640-651
  8. You, S., et al., In-Situ Experimental Study of Heat Exchange Capacity of CFG Pile Geothermal Exchangers, Energy and Buildings, 79 (2014), pp. 23-31
  9. Yang, X. J., et al., Fundamental Solutions of the General Fractional-Order Diffusion Equations, Mathematical Methods in the Applied Sciences, 41 (2018), 18, pp. 9312-9320
  10. Ingersoll, L. R., et al., Theory of the Ground Pipe Heat Source for the Heatpump, Heating, piping, and Air conditioning, 54 (2016), 7, pp. 339-348
  11. Yang, X. J., A New Integral Transform Operator for Solving the Heat-Diffusion Problem, Applied Mathematics Letters, 64 (2017), pp. 193-197
  12. You, S., et al., Effects of Groundwater Flow on the Heat Transfer Performance of Energy Piles: Experimental and Numerical Analysis, Energy and Buildings, 155 (2017), pp. 249-259
  13. Laloui, L., et al., Numerical Modeling of Some Features of Heat Exchanger Pile, Foundation Analysis and Design: Innovative Methods-Proceedings of Sessions of GeoShanghai, 2006, pp. 189-194

© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence