Next Article in Journal
A Review of Experimental Techniques for Measuring Micro- to Nano-Particle-Laden Gas Flows
Previous Article in Journal
Wetting Resistance of Commercial Membrane Distillation Membranes in Waste Streams Containing Surfactants and Oil
Open AccessArticle

Experimental Study and Modelling of the Thermal Conductivity of Sandy Soils of Different Porosities and Water Contents

1
College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2
School of Computing, Science & Engineering, University of Salford, Manchester M5 4WT, UK
3
Taiyuan Bilan Hydraulic Engineering Design Co. Ltd., Taiyuan 030024, China
*
Author to whom correspondence should be addressed.
Academic Editor: Stefano Invernizzi
Appl. Sci. 2017, 7(2), 119; https://doi.org/10.3390/app7020119
Received: 25 October 2016 / Revised: 13 January 2017 / Accepted: 17 January 2017 / Published: 25 January 2017
(This article belongs to the Section Energy)
This paper at first reports an experimental work to test the thermal conductivity of formulated sandy soil specimens of different porosities and water contents. Both needle probe and hot-plate methods were conducted and compared. It has been confirmed that the needle probe method has a better accuracy for the measurement of unsaturated soil thermal conductivity, and that the pore size distribution plays an important role on unsaturated soil thermal conductivity. Secondly, it gives out an extensive review on the modelling work, and investigates two major types of empirical models in detail. Two generalized formulas have been suggested to mathematically characterise the two types of models and tested using the experimental data. Finally, in terms of the intrinsic relation to the pore size distribution and the similarity between the thermal conductivity and water retention characteristics of unsaturated soils, a soil water retention model has been suggested and tested to describe unsaturated soil thermal conductivity. View Full-Text
Keywords: soil thermal conductivity; needle probe method; hot-plate method; porosity; saturation; soil water retention model soil thermal conductivity; needle probe method; hot-plate method; porosity; saturation; soil water retention model
Show Figures

Figure 1

MDPI and ACS Style

Jin, H.; Wang, Y.; Zheng, Q.; Liu, H.; Chadwick, E. Experimental Study and Modelling of the Thermal Conductivity of Sandy Soils of Different Porosities and Water Contents. Appl. Sci. 2017, 7, 119.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop