Global Organization
One-of-a-kind experimental and numerical investigation is provided in this paper about energy sheet pile walls: earth retaining structures that embed heat exchanger probes within piles for the exploitation of shallow geothermal energy.
This study investigated thermo-mechanical aspects governing the behaviour of energy sheet pile walls, based on the results of full-scale in situ tests and coupled three-dimensional thermo-mechanical finite element analyses of a real case study.
Despite relying on the same functioning principle, energy sheet pile walls are characterised by different heat transfer and static features compared to other energy geostructures.
The heat exchange capacity of an energy pile could be determined from an in situ test (thermal response test) or from an advanced three-dimensional numerical analysis (Ozudogru et al., 2012). Morino and Oka (1994) conducted the first experimental study to assess the heat exchange behaviour of a steel pile equipped with two vertical tubes.
Energy piles offer a promising and eco-friendly technique to heat or cool buildings. Energy piles can be exploited as ground heat exchangers of a ground source heat pump system. In such application, the energy pile and its surrounding soil are subjected to temperature changes that could significantly affect the pile–soil interaction behaviour.
Energy piles, also called thermo-active piles, are an alternative solution for heating and/or cooling needs. Energy piles are double purpose structures that allow transferring the loads from the superstructure to the soil and that integrate pipe circuits allowing heat exchange between the pile and the surrounding ground.
For reasons of efficiency, an annual performance factor of at least 4 is aimed for, which can easily be achieved with energy sheet pile walls if they are properly designed. Consequently, energy …
The multitube design in the shell-and-tube type latent heat thermal energy storage (LHTES) system has received intensive attention due to its promising benefits in …
One-of-a-kind experimental and numerical investigation is provided in this paper about energy sheet pile walls: earth retaining structures that embed heat exchanger probes …
In the first part of the study, two lab-scaled (30×10 cm) energy piles, surrounded with three layers of insulation, one of the piles has four PCM containers with a melting …
Mousa et al. studied the influence of operating conditions on the thermal storage capacity of PCM energy piles through small-scale model experiments and numerical …
The results shows the heat transfer efficiency of the double U connected tubes is suitbable used in drilled pile, and the heat transfer capacity of the energy piles does not …
and the advantages of new energy electric vehicles rely on high energy storage density batteries and ecient and fast charg-ing technology. This paper introduces a DC charging pile for new …
Fig. 1 Experiments under heat insulation Fig. 2 Linear regression process for the equivalent speci fi c heat capacity of each cell Fig. 3 Thermodynamic parameters of 12 …
To understand and quantify the performance of the coupled energy pile-solar collector system for underground solar energy storage, indoor laboratory-scale experiments …
The results highlight that: a marked non-uniformity of the temperature field can characterise real applications of energy sheet pile walls, representing a significant challenge to …
The use of geothermal pile foundations is an environmental friendly way to extract/storage energy from/in the ground. The operating principle of these innovative …
performance of an energy pile system coupled with a heat pump using the 4E evaluation criteria (energy, exergy, economy, and environment) while ensuring the safety of the foundation under …
Mousa et al. studied the influence of operating conditions on the thermal storage capacity of PCM energy piles through small-scale model experiments and numerical calculations; the results revealed that the thermal …
A lab-scaled foundation pile was developed to examine the performance of the present energy pile, where three layers of insulation replaced the underground soil to focus on …
The use of a latent heat storage system using phase change materials (PCMs) is an effective way of storing thermal energy and has the advantages of high-energy storage …
steel fiber in enhancing heat transfer performance in pile material is analyzed from the microscopic mechanism, which provides theoretical support for the op- timization process of …
The global energy demand as well as the socio-economical stakes concerning the increase of energy costs due to fossil fuels has stimulated the research for new sustainable and cost …
Understanding the heat transfer across energy piles is the first step in designing these systems. The thermal process goes in an energy pile, as in a borehole heat exchanger, …
steel fiber in enhancing heat transfer performance in pile material is analyzed from the microscopic mechanism, which provides theoretical support for the op- timization process of …
In the first part of the study, two lab-scaled (30×10 cm) energy piles, surrounded with three layers of insulation, one of the piles has four PCM containers with a melting …
Energy piles offer a promising and eco-friendly technique to heat or cool buildings. Energy piles can be exploited as ground heat exchangers of a ground source heat pump system. In such …
Design and experimental analysis of energy-saving and heat storage of a hot water tank based on the source-sink matching principle December 2022 Case Studies in Thermal Engineering 41(3):102672