Numerical Analysis of the Thermo-Mechanical Behavior of an Energy Pile in Mexico

López-Acosta, Norma Patricia; Barba-Galdámez, David Francisco; Sánchez, Marcelo

doi:10.1007/978-3-319-99670-7_19

Cited by 3 publications

(1 citation statement)

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“…This increasing demand has a significant impact on the environment, and it is an obstacle for the accomplishment of the Mexican government's commitment to reduce its greenhouse gas emissions by 22% by 2030 [3]. In recent years, ground-source heat pump systems (GSHPs) and energy geostructures have been proposed as a viable alternative to fulfill space conditioning requirements while satisfying new energy efficiency standards for buildings [4]. The efficiency of these systems depends on the storage capacity and heat transfer characteristics of the ground; thus, an accurate characterization of local soil thermal properties is crucial for their design [5].…”

Section: Introductionmentioning

confidence: 99%

Determination of Thermal Conductivity Properties of Coastal Soils for GSHPs and Energy Geostructure Applications in Mexico

2021

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The thermal conductivity of soils is a fundamental parameter for the design of ground-source heat pump systems (GSHPs) and energy geostructures. This paper presents a comprehensive evaluation of the physical, mineralogical, and thermal characteristics of typical coastal soils from Tabasco, Mexico. Twenty-five soil samples from four different strata were studied using the thermal needle probe method, X-ray diffractometry, scanning electron microscopy, and standard geotechnical soil classification tests. The results showed a significant correlation between the dry density and porosity with the thermal conductivity of the studied samples, which ranged between 1.17 and 2.32 W m−1 K−1. The performed statistical analyses indicated that coarse-grained soils had larger thermal conductivities and higher variability than fine-grained soils. Additionally, the performance of six models to estimate the thermal conductivity of soils was validated against the experimental data. All models provided accurate estimations for fine-grained soils, but only the effective medium theory (EMT) showed an adequate fit for coarse-grained soils. The results represent one of the first datasets for the thermal properties of Mexican soils. They will contribute to the implementation of GSHPs and energy geostructures in the country and locations with similar subsoil conditions, especially where time and resources are not available for their experimental determination.

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Section: Introductionmentioning

confidence: 99%