An innovative energy pile technology to expand the viability of geothermal bridge deck snow melting for different United States regions: Computational assisted feasibility analyses

Han, Chanjuan; Yu, Xiong

doi:10.1016/j.renene.2018.02.044

Cited by 55 publications

(11 citation statements)

References 17 publications

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“…Many numerical models have been developed in the past years to analyze energy piles' thermal performance, based mostly on finite element and finite volume methods [19,23,24,26,34]. Several reviews [5,6,41,42] showed that numerical models are precise and realistic to simulate energy piles.…”

Section: Methodsmentioning

confidence: 99%

A review on energy piles design, evaluation, and optimization

Mohamad

Fardoun

Meftah

2021

Journal of Cleaner Production

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Methodsmentioning

confidence: 99%

A review on energy piles design, evaluation, and optimization

Mohamad

Fardoun

Meftah

2021

Journal of Cleaner Production

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“…In addition, the integration of PCMs into concrete would enhance the GCHP’s efficiency. However, there are many challenges linked to interactions between concrete, GHE pipes, and PCMs, while the number of related studies is still very limited [ 142 , 143 ]. The integration between PCMs and backfilling materials, or concrete in energy piles, could also take advantage of previous studies performed in the building sector.…”

Section: Future Challenges: Pcm–ghe Couplingmentioning

confidence: 99%

Phase Change Material Evolution in Thermal Energy Storage Systems for the Building Sector, with a Focus on Ground-Coupled Heat Pumps

et al. 2022

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The building sector is responsible for a third of the global energy consumption and a quarter of greenhouse gas emissions. Phase change materials (PCMs) have shown high potential for latent thermal energy storage (LTES) through their integration in building materials, with the aim of enhancing the efficient use of energy. Although research on PCMs began decades ago, this technology is still far from being widespread. This work analyses the main contributions to the employment of PCMs in the building sector, to better understand the motivations behind the restricted employment of PCM-based LTES technologies. The main research and review studies are critically discussed, focusing on: strategies used to regulate indoor thermal conditions, the variation of mechanical properties in PCMs-based mortars and cements, and applications with ground-coupled heat pumps. The employment of materials obtained from wastes and natural sources was also taken in account as a possible key to developing composite materials with good performance and sustainability at the same time. As a result, the integration of PCMs in LTES is still in its early stages, but reveals high potential for employment in the building sector, thanks to the continuous design improvement and optimization driven by high-performance materials and a new way of coupling with tailored envelopes.

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“…The objective function for the construction cost of a conventional and a geothermal energy pile (€), see Equation (1), was created: min COST = C drill + C conc + C rein,main + C rein,shear + C thermal (1) where: COST -the self-manufacturing costs of the geothermal energy pile; C drill -cost of ground drilling; C conc -cost of concrete; C rein,main -cost of main reinforcing steel; C rein,shear -cost of shear reinforcing steel; C thermal -cost of installation of heating pipes in the pile.…”

Section: Optimization Model For the Design Of Conventional And Geothe...mentioning

confidence: 99%

“…There are two types of near-surface geothermal energy use: open-loop shallow geothermal energy systems (well systems, surface water systems) and closed-loop shallow geothermal energy systems (horizontal systems, vertical systems, and geostructures). The geothermal energy piles are typical geostructures used for heating/cooling buildings [1][2][3][4] . Ge-othermal energy piles have two basic functions, one is to transfer loads to the ground with higher bearing capacity and the other is to transfer excess heat from the multi-storey building to the cooler ground in summer and extract heat from the ground in winter [5] .…”

Section: Introductionmentioning

confidence: 99%

Determination of optimal designs for geothermal energy piles in the soil supporting a multi-storey building

Žlender¹,

Jelušič²

2022

new n.a. exploit. and appl.

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The article presents the optimal design of geothermal energy piles supporting a multi-story building at different pile spacing. The optimization model OPTPILE, based on the construction cost of the single pile, was used for this purpose. It was provided with geotechnical and structural design constraints that satisfy the requirements of building codes. The optimal design of a geothermal energy pile was studied for a 10-storey building with different pile spacing. So far, only a single energy pile has been optimized and therefore the spacing between the piles has not yet been considered in the design. However, in this work, pile spacing is taken into account by considering the entire load distribution of the multi-story building. A 3D beam-slab frame was created to determine the pile loads. The recommendation for the optimal design of geothermal energy pile spacing for a 10-storey building was developed. The results show that the optimal pile spacing (square distribution) for a 10-storey building is about 7 m. The construction cost for all thermal pile foundations and concrete structural components for a 10-storey building is estimated to be 101.1 €/m2. The optimal architecturally reasonable spacing of piles with a square distribution for a 10-storey building is 8.5 m. In this case, the cost of the concrete structural elements of the building and the piles increases by 1% to 102.1 €/m2. The cost of installing the heating pipes in the pile is about 1 €/m2.

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An innovative energy pile technology to expand the viability of geothermal bridge deck snow melting for different United States regions: Computational assisted feasibility analyses

Cited by 55 publications

References 17 publications

A review on energy piles design, evaluation, and optimization

A review on energy piles design, evaluation, and optimization

Phase Change Material Evolution in Thermal Energy Storage Systems for the Building Sector, with a Focus on Ground-Coupled Heat Pumps

Determination of optimal designs for geothermal energy piles in the soil supporting a multi-storey building

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