Influence of geology and hydrogeology on heat rejection from residential basements in urban areas

Bidarmaghz, Asal; Choudhary, Ruchi; Soga, Kenichi; Kessler, Holger; Terrington, R.L.; Thorpe, S. A.

doi:10.1016/j.tust.2019.103068

Cited by 23 publications

(20 citation statements)

References 37 publications

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“…In the study presented in this paper, the geology of the citycentre of Cardiff, UK is combined with an accurate representation of buildings which have heated basements. This builds on previous work by Bidarmaghz et al [2,5] by accounting for more refined geological variation in and a greater realism in the building distribution. A numerical model is created using the finite element solver COMSOL Multiphysics ® [6] where coupled heat transfer in porous media and fluid flow through the media is considered.…”

Section: Introductionmentioning

confidence: 58%

“…The effects can be significant, with ground temperature anomalies propagating as far as 130 m below ground level in the city of Winnipeg, Canada [1]. Bidarmaghz et al [2] showed increases in ground temperatures in the range of 1 to 5.5 °C within the Royal Borough of Kensington and Chelsea, London due to the presence of heated basements. Changes in underground temperatures can impact ventilation and cooling costs of underground spaces, efficiency of geo-energy systems, quality and quantity of groundwater flow, and the health and maintenance of underground structures.…”

Section: Introductionmentioning

confidence: 99%

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Effect of anthropogenic heat sources in the shallow subsurface at city-scale

et al. 2020

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Rapid rates of urbanisation are placing growing demands on cities for accommodation and transportation, with increasing numbers of basements and tunnel networks being built to meet these rising demands. Such subsurface structures constitute continuous heat sources and sinks, particularly if maintained at comfortable temperatures. At the city-scale, there is limited understanding of the effect of heat exchange of underground infrastructures with their environments, in part due to limited availability of long-term underground temperature data. The effects of underground temperature changes due anthropogenic heat fluxes can be significant, impacting ventilation and cooling costs of underground spaces, efficiency of geo-energy systems, quality and quantity of groundwater flow, and the health and maintenance of underground structures. In this paper we explore the impact of anthropogenic subsurface structures on the thermal climate of the shallow subsurface by developing a heat transfer model of the city of Cardiff, UK, utilising a recently developed semi-3D modelling approach.

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Section: Introductionmentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Effect of anthropogenic heat sources in the shallow subsurface at city-scale

et al. 2020

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“…It has been demonstrated that the development of the SUHI is related to anthropogenic modifications of the land use and the percentage of area covered by buildings (Benz et al 2015(Benz et al , 2018. On the other hand, in order to quantify the amount of heat released in the aquifer a robust knowledge of the hydrogeological setting of the area and of the conterminous regions is essential (Bidarmaghz et al 2019). In this work, the groundwater level and the shallow groundwater temperature fluctuations observed in the MCA were analyzed by means of spatio-temporal statistical and correlation techniques, revealing a SUHI effect up to 3°C intense.…”

Section: Resultsmentioning

confidence: 99%

Characterization of the subsurface urban heat island and its sources in the Milan city area, Italy

Previati

Crosta

2021

Hydrogeol J

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Urban areas are major contributors to the alteration of the local atmospheric and groundwater environment. The impact of such changes on the groundwater thermal regime is documented worldwide by elevated groundwater temperature in city centers with respect to the surrounding rural areas. This study investigates the subsurface urban heat island (SUHI) in the aquifers beneath the Milan city area in northern Italy, and assesses the natural and anthropogenic controls on groundwater temperatures within the urban area by analyzing groundwater head and temperature records acquired in the 2016–2020 period. This analysis demonstrates the occurrence of a SUHI with up to 3 °C intensity and reveals a correlation between the density of building/subsurface infrastructures and the mean annual groundwater temperature. Vertical heat fluxes to the aquifer are strongly related to the depth of the groundwater and the density of surface structures and infrastructures. The heat accumulation in the subsurface is reflected by a constant groundwater warming trend between +0.1 and + 0.4 °C/year that leads to a gain of 25 MJ/m2 of thermal energy per year in the shallow aquifer inside the SUHI area. Future monitoring of groundwater temperatures, combined with numerical modeling of coupled groundwater flow and heat transport, will be essential to reveal what this trend is controlled by and to make predictions on the lateral and vertical extent of the groundwater SUHI in the study area.

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“…Their conclusion is that heat loss from buildings is the major source of the Winnipeg SUHI. Bidarmaghz et al (2019) studied by numerical modeling the amount of heat from basements released to the ground and concluded that this constitutes a significant percentage of the total heat loss from buildings, particularly in the presence of groundwater flow. In that study, basements were assumed to be kept at 18°C throughout the year.…”

Section: Discussionmentioning

confidence: 99%

Impacts of progressive urban expansion on subsurface temperatures in the city of Amsterdam (The Netherlands)

et al. 2020

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Subsurface temperatures are substantially higher in urban areas than in surrounding rural environments; the result is a subsurface urban heat island (SUHI). SUHIs and their drivers have received attention in studies worldwide. In this study, a well-constrained data set of subsurface temperatures from Amsterdam, The Netherlands, is presented. The study demonstrates that, through modeling of centuries-long (from fourteenth to twenty-first century) urban development and climate change, along with the history of both the surface urban heat-island temperatures and ground surface temperatures, it is possible to simulate the development and present state of the Amsterdam SUHI. The results provide insight into the drivers of long-term SUHI development, which makes it possible to distinguish subterranean heat sources of more recent times that are localized drivers (such as geothermal energy systems, sewers, boiler basements, subway stations or district heating) from larger-scale drivers (mainly heat loss from buildings and raised groundsurface temperatures due to pavements). Because these findings have consequences for the assessment of the shallow geothermal potential of the SUHIs, it is proposed to distinguish between (1) a regional, long-term SUHI that has developed over centuries due to the larger-scale drivers, and (2) local anomalies caused by anthropogenic heat sources less than one century old.

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Influence of geology and hydrogeology on heat rejection from residential basements in urban areas

Cited by 23 publications

References 37 publications

Effect of anthropogenic heat sources in the shallow subsurface at city-scale

Effect of anthropogenic heat sources in the shallow subsurface at city-scale

Characterization of the subsurface urban heat island and its sources in the Milan city area, Italy

Impacts of progressive urban expansion on subsurface temperatures in the city of Amsterdam (The Netherlands)

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