City-scale perspective for thermoactive structures in Warsaw

Ryżyński, Grzegorz; Bogusz, Witold

doi:10.1680/jenge.15.00031

Cited by 6 publications

(2 citation statements)

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“…At the same time, incorporating into the buildings thermally active construction elements that use thermal potential of a soil-rock medium and exchange heat between the ground and building is getting more and more popular. Few examples of those constructions are thermoactive foundations, foundation piles or tunnel walls [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Serial Laboratory Effective Thermal Conductivity Measurements of Cohesive and Non-cohesive Soils for the Purpose of Shallow Geothermal Potential Mapping and Databases—Methodology and Testing Procedure Recommendations

2020

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The article presents the methodology of conducting serial laboratory measurements of thermal conductivity of recompacted samples of cohesive and non-cohesive soils. The presented research procedure has been developed for the purpose of supplementing the Engineering–Geology Database and its part–Physical and Mechanical Properties of Soils and Rocks (abbr. BDGI-WFM) with a new component regarding thermal properties of soils. The data contained in BDGI-WFM are the basis for the development of maps and plans for the assessment of geothermal potential and support for the sustainable development of low enthalpy geothermal energy. Effective thermal conductivity of soils was studied at various levels of water saturation and various degrees of compaction. Cohesive soils were tested in initial moisture content and after drying to a constant mass. Non-cohesive soils were tested in initial moisture, fully saturated with water and after drying to a constant mass. Effective thermal conductivity of non-cohesive soils was determined on samples mechanically compacted to the literature values of bulk density. Basic physical parameters were determined for each of the samples. In total, 120 measurements of thermal conductivity were carried out, for the purposes of developing the guidelines which allowed statistical analysis of the results. The results were cross-checked with different measuring equipment and with the literature data.

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Section: Introductionmentioning

confidence: 99%

Serial Laboratory Effective Thermal Conductivity Measurements of Cohesive and Non-cohesive Soils for the Purpose of Shallow Geothermal Potential Mapping and Databases—Methodology and Testing Procedure Recommendations

2020

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“…Finally, Ryżyński and Bogusz (2016) make a preliminary evaluation of the city-scale impact of thermoactive geostructures using the city of Warsaw (Poland) as a case study.…”

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confidence: 99%

Editorial

Barla

Donna

2016

Environmental Geotechnics

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It is also expected that increasing application would stimulate designers towards the optimisation of the process. This could be obtained by seeking the use of new materials and techniques. As an example, the guest editors have recently deposited a patent for a new tunnel energy segment, which improves the energy efficiency thanks to geometrical optimisation of the pipe system.In the scenario of an increasing use of such technology, interactions between close geothermal systems and their sustainability in the long term may become a major issue. This includes the mechanical behaviour of the structural elements subjected to cyclic thermal loads as well as the influence on the surroundings in terms of increase in the temperature in the ground and subsidence or deformations in the pre-existing buildings.This themed issue was devoted to collect papers related to these studies, exploring advances and perspectives of thermoactive geostructures. The issue presents eight papers. Topics addressed go from theoretical aspects of the thermal behaviour of soils and rocks to the description of virtual or real demonstrators.The role of geotechnical parameters is addressed by Yu et al. (2016) who provided recommendations for determining soil thermal conductivity to guide the design of energy geostructures. Wang et al. (2016) presented a physical model test of energy piles. Di Donna and Barla (2016) explored the role of ground conditions on the efficiency of energy tunnel segmental linings. The outcomes are practical design charts that can be used at a preliminary stage for the assessment of the heat that can be exchanged with the ground.Virtual or real applications of GHEs are considered in the other papers. Bidarmaghz et al. (2016) show the potential of GHE in loess, while Abdelaziz and Ozudogr (2016) investigated the thermomechanical response of energy piles giving practical recommendations to designers. Mikhaylova et al. (2016) proposed a methodology for the estimation of GHE design length based on uncertainties in design parameters and Loveridge and Cecinato (2016) presented thermal activation of continuous flight auger piles, which is a common pile construction method for buildings in urban areas.Finally, Ryżyński and Bogusz (2016) make a preliminary evaluation of the city-scale impact of thermoactive geostructures using the city of Warsaw (Poland) as a case study.The guest editors wish to acknowledge the support of authors, reviewers and the Chair, without which the issue could notThe demand of energy in the world is continuously growing and is still currently satisfied mainly by oil, natural gas and coal. At the same time, high levels of air pollution and lack of green spaces affect the major cities, leading to an increasing use of the underground for transportation and utilities. The need to develop local and lowenvironmental-impact energy resources becomes more and more necessary. In this context, shallow geothermal systems, used for domestic heating and cooling, may play an important role and their growth potential sho...

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Energy geostructures: A review of analysis approaches, in situ testing and model scale experiments

Loveridge

McCartney

Narsilio

et al. 2020

Geomechanics for Energy and the Environment

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TThis position paper was developed by members of the task force on "Energy Geostructures" of the International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE) Technical Committee TC308 on 'Energy Geotechnics'. The article includes a summary and review of some of the most recent analysis approaches, in situ testing, full scale testing and model scale experiments with a focus on energy piles and other energy geostructures. The geotechnics literature in these topics has increased rapidly in the last five years suggesting a surge in this emerging research area. Here complementary lines of research can be distinguished, one focusing on thermal analysis and another focusing on thermo-geomechanical analysis. Limitations, shortcomings and knowledge gaps are identified and needs for further research and development within the geotechnical community are highlighted.

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City-scale perspective for thermoactive structures in Warsaw

Cited by 6 publications

References 10 publications

Serial Laboratory Effective Thermal Conductivity Measurements of Cohesive and Non-cohesive Soils for the Purpose of Shallow Geothermal Potential Mapping and Databases—Methodology and Testing Procedure Recommendations

Serial Laboratory Effective Thermal Conductivity Measurements of Cohesive and Non-cohesive Soils for the Purpose of Shallow Geothermal Potential Mapping and Databases—Methodology and Testing Procedure Recommendations

Editorial

Energy geostructures: A review of analysis approaches, in situ testing and model scale experiments

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