Thermal Performance of Wet Swales Designed as Multifunctional Green Infrastructure Systems for Water Management and Energy Saving

Andrés‐Valeri, Valerio C.; Sañudo-Fontaneda, Luis Á.; Rey-Mahía, Carlos; Coupe, Stephen J.; Rabanal, Felipe Pedro Álvarez

doi:10.3390/proceedings2231433

Cited by 4 publications

(5 citation statements)

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“…This study has provided relevant insights into how the different layers of a wet swale perform under different temperatures of operation by the GSHP system described by the Energy Saving Trust [37]. The outcomes obtained in this study have responded to the gaps identified by Andrés-Valeri et al, 2018 [32] and have further developed the understanding of the nexus between swales and GSHP, connecting to other studies carried out in other SUDS devices, such as Tota-Maharaj et al [26].…”

Section: General Discussion and Future Research Directionsmentioning

confidence: 68%

“…Charlesworth et al [31] identified future prospects for GSHP and PPS, emphasising the application of horizontal heat pump technology in greener SUDS; an idea supported by Tota-Maharaj et al [26] who identified paths towards the exploration of GSHP technology, previously used in PPS, in 'greener' SUDS, such as wetlands. Andrés-Valeri et al [32] pioneered the plan to housing GSHP elements in the structure of a wet swale, transferring the previously developed concepts for PPS into swales, highlighting the need to further develop research to fill this key gap in the current knowledge.…”

Section: Introductionmentioning

confidence: 99%

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Evaluating the Thermal Performance of Wet Swales Housing Ground Source Heat Pump Elements through Laboratory Modelling

et al. 2019

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Land-use change due to rapid urbanization poses a threat to urban environments, which are in need of multifunctional green solutions to face complex future socio-ecological and climate scenarios. Urban regeneration strategies, bringing green infrastructure, are currently using sustainable urban drainage systems to exploit the provision of ecosystem services and their wider benefits. The link between food, energy and water depicts a technological knowledge gap, represented by previous attempts to investigate the combination between ground source heat pump and permeable pavement systems. This research aims to transfer these concepts into greener sustainable urban drainage systems like wet swales. A 1:2 scaled laboratory models were built and analysed under a range of ground source heat pump temperatures (20–50 °C). Behavioral models of vertical and inlet/outlet temperature difference within the system were developed, achieving high R2, representing the first attempt to describe the thermal performance of wet swales in literature when designed alongside ground source heat pump elements. Statistical analyses showed the impact of ambient temperature and the heating source at different scales in all layers, as well as, the resilience to heating processes, recovering their initial thermal state within 16 h after the heating stage.

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Section: General Discussion and Future Research Directionsmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Evaluating the Thermal Performance of Wet Swales Housing Ground Source Heat Pump Elements through Laboratory Modelling

et al. 2019

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“…These experimental results provided positive feedback in order to improve the design of permeable pavements when designed in combination with surface geothermal elements. Thus, optimising these designs and avoiding the design problems represented in [22] such as the lack of thermal considerations suffered in a field design of a permeable pavement in combination with surface geothermal energy, representing a knowledge gap also identified by other authors [10,23]. This research pointed out new applications Future steps in this research line will require more laboratory tests, so that new materials and cross-sections can be fully evaluated thus determining the potential improvement of the thermal properties of the section.…”

Section: Discussionmentioning

confidence: 99%

Assessment of the thermal properties for the geothermal use of a permeable pavement structure for pedestrian and cycle paths

Rey-Mahía¹,

Álvarez-Rabana²,

Sañudo-Fontaneda³

2023

energetika

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Sustainable Drainage Systems (SuDS) have positioned themselves as one of the most widely applied Green Infrastructure (GI) techniques for sustainable stormwater management. In recent decades, new lines of research have emerged leading to the geothermal use of SuDS. The aim is to optimise available space in cities and minimise dependence on non-renewable energy sources. Previous research has focused on determining the feasibility of combining the two technologies, both in laboratory and field studies. Other aspects such as the influence of the surface geothermal system on the quality of the water present in the SuDS were also studied. This previous research has focused mainly on permeable pavements, positioning them as one of the SuDS techniques of reference in this line of research. This article attempts to give continuity to what has been established by other authors. It studies in depth the thermal properties of a complete section of permeable pavement under different hydraulic operating conditions. To this end, a complete section of a permeable pavement has been simulated in the laboratory using Hot-Box tests as set out in different international standards. With these tests, the values of thermal transmittance and equivalent thermal conductivity were determined. The aim of this research is to establish a test procedure for the thermal properties of permeable floorings, based on standardised equipment. The aim is to better understand the heat transfer procedures inside SuDS. In this way, it will be possible to optimise the design of these in combination with surface geothermal elements.

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“…In addition to the dry and wet tests described above, saturated wet tests were carried out. These consisted of keeping a constant level of water up to the surface layer of the blue roof section, as was done by other authors in SUDS thermal studies [16]. The data obtained in these tests showed that the heat flow was transmitted through the water, thus the thermal properties of the different layers forming the blue roof were not available.…”

Section: Constraints Identified In This Researchmentioning

confidence: 99%

“…A few authors explored the water-energy nexus, combining SUDS and renewable energy techniques from a thermal harnessing viewpoint, with the majority of these investigations focused on the use of ground source heat pump (GSHP) alongside permeable pavement systems (PPS) [13][14][15]. Recent studies have examined the potential match between GSHP and wet swales [16], as well as the long-term temperature behavior of vegetated swales in the field [17]. The abovementioned studies revealed promising results for the future development of multifunctional surfaces, housing energy and stormwater management techniques.…”

Section: Introductionmentioning

confidence: 99%

An Experimental and Numerical Approach to Multifunctional Urban Surfaces through Blue Roofs

et al. 2022

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Uncontrolled urban growth causes a number of problems associated with land use, stormwater management and energy generation. Sustainable Urban Drainage Systems (SUDS) are positioned as an alternative to traditional constructive solutions, contributing towards the generation of multifunctional urban spaces for efficient stormwater management and energy consumption reduction. Nevertheless, this combined goal calls for a deeper understanding of the heat transfer processes that govern the temperature performance in SUDS in order to be further validated as infrastructure to house renewable energy elements. This study intends to determine the thermal properties of two types of blue roofs under extreme conditions of performance (wet and dry), depicting the operation features of their layers and comparing their performances based on the materials used. With this aim, a hybrid experimental methodology, combining laboratory and numerical modelling, was designed using standardized equipment (ISO 8990:1994 and ASTM C1363-05), improving previous methods proposed in the study of the thermal properties of SUDS. The section with expanded clay improved the hydraulic capacity by 4.8%. The section without expanded clay increased its thermal transmittance value by 64.9% under wet conditions. It was also found that the presence of water increased the equivalent thermal conductivity in both sections by 60%.

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Thermal Performance of Wet Swales Designed as Multifunctional Green Infrastructure Systems for Water Management and Energy Saving

Cited by 4 publications

References 4 publications

Evaluating the Thermal Performance of Wet Swales Housing Ground Source Heat Pump Elements through Laboratory Modelling

Evaluating the Thermal Performance of Wet Swales Housing Ground Source Heat Pump Elements through Laboratory Modelling

Assessment of the thermal properties for the geothermal use of a permeable pavement structure for pedestrian and cycle paths

An Experimental and Numerical Approach to Multifunctional Urban Surfaces through Blue Roofs

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