Thermal Energy Harvesting from Asphalt Roadway Pavement

Datta, Utpal; Dessouky, Samer; Papagiannakis, A. T.

doi:10.1007/978-3-319-61908-8_20

Cited by 11 publications

(7 citation statements)

References 2 publications

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“…Based on the literature, different heat collector locations were tested; the locations ranged between 0.3 [100] and 7 [79] cm underneath the pavement surface. However, most of the previous studies reported that 2 cm underneath the pavement surface was the optimal location for the heat collector [91,92,95,98,99].…”

Section: Teg Applications On Pavementsmentioning

confidence: 97%

“…Based on the literature, the heat collector can be either solid or fluid (water circulated inside a PSC system, Figure 10a) with the condition that the selected material should have an acceptable thermal conductivity coefficient. The common solid heat collectors that have been used previously are copper [90][91][92][93][94][95][96][97] and aluminum [94,[98][99][100][101][102][103] plates. However, some studies did not employ heat collectors to obtain energy from the pavement; instead, the TEG module's hot end was directly subjected to the heat source [104][105][106][107].…”

Section: Teg Applications On Pavementsmentioning

confidence: 99%

“…Based on the literature, a water tank [92,94,102] and an aluminum [92,100,104,108] heat sink are the common methods that are used to keep the TEG cold side at a low temperature. In some cases, both materials were integrated in different combinations, such as an aluminum heat sink filled with water [95,96,98,99] or an aluminum heat sink filled with phase change materials (PCM) [90,91,93,97]. It was found that the integrated heat sinks provided better performance when compared with the pure techniques.…”

Section: Teg Applications On Pavementsmentioning

confidence: 99%

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Evaluation of the Pavement Geothermal Energy Harvesting Technologies towards Sustainability and Renewable Energy

2022

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Continually using fossil fuels as the main source for producing electricity is one of the main factors causing global warming. Through the past years, several efforts have been made, looking for sustainable, environmentally friendly, and clean energy alternatives. Harvesting geothermal energy from roadway pavement is one of the alternatives that have been developed and investigated recently. Herein, a systematic review and bibliometric analysis were conducted to provide a comprehensive overview of the potentials of harvesting thermal energy from asphalt pavement and to assess the level of achievement being attained towards developed technologies. A total of 713 articles were initially collected, considering the period between 2006 and 2021; later, a series of filtration processes were performed to reach 47 publications. The thermal energy harvesting technologies were categorized into three main sectors, at which their basics and principles were discussed. In addition, a detailed description of the systems’ configurations, materials, and efficiency was presented and described. Finally, gaps and future directions were summarized at the end of this paper. The fundamental knowledge introduced herein can inspire researchers to detect research gaps and serve as a wake-up call to motivate them to explore the high potentials of utilizing pavements as a clean and sustainable energy source.

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Section: Teg Applications On Pavementsmentioning

confidence: 97%

Section: Teg Applications On Pavementsmentioning

confidence: 99%

Section: Teg Applications On Pavementsmentioning

confidence: 99%

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Evaluation of the Pavement Geothermal Energy Harvesting Technologies towards Sustainability and Renewable Energy

2022

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“…The temperature of the heat collection liquid usually needs to be elevated using heat pumps before it can be used for heating purposes. In some applications, such as melting the snow on the asphalt field or making electricity by using thermocouples [38], it could be used without heat pumps. DTS measurements show (Figure 11) that the annual changes in the soil temperature, caused by the solar radiation, mostly occur within the first 10 m below the ground level.…”

Section: Discussionmentioning

confidence: 99%

Temperature Measurements on a Solar and Low Enthalpy Geothermal Open-Air Asphalt Surface Platform in a Cold Climate Region

et al. 2020

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Solar heat, already captured by vast asphalt fields in urban areas, is potentially a huge energy resource. The vertical soil temperature profile, i.e., low enthalpy geothermal energy, reveals how efficiently the irradiation is absorbed or radiated back to the atmosphere. Measured solar irradiation, heat flux on the asphalt surface and temperature distribution over a range of depths describe the thermal energy from an asphalt surface down to 10 m depth. In this study, those variables were studied by long-term measurements in an open-air platform in Finland. To compensate the nighttime heat loss, the accumulated heat on the surface should be harvested during the sunny daytime periods. A cumulative heat flux over one year from asphalt to the ground was 70% of the cumulative solar irradiance measured during the same period. However, due to the nighttime heat losses, the net heat flux during 5 day period was only 18% of the irradiance in spring, and was negative during autumn, when the soil was cooling. These preliminary results indicate that certain adaptive heat transfer and storage mechanisms are needed to minimize the loss and turn the asphalt layer into an efficient solar heat collector connected with a seasonal storage system.

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“…Utilizing the optimized source and load matching, they reported 70 mJ of harvested electrical energy per day. Datta et al focused on an asphalt surface to lower soil layer harvesting scenario, and reported up to 16 mW harvested power around midday utilizing a TEG with an area of 80 cm 2 [27]. Harvesting directly at the pavement surface, the impact of different TEG surface embedding options, surface colors and materials was experimentally evaluated in [28].…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Energy Harvesting From Gradients in the Earth Surface

Sigrist

Stricker

Bernath

et al. 2020

IEEE Trans. Ind. Electron.

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We introduce an energy harvesting system capable of converting bipolar thermal gradients to electrical energy. An active rectification circuit, electrical impedance matching and commodity thermoelectric generators (TEGs) are used to efficiently extract energy from very small temperature gradients found at the natural ground-to-air boundary. The full harvesting system is modeled in detail from thermal radiation to the electrical load. This end-toend model enables system dimensioning to meet specific application requirements. A multi-year deployment of the harvesting system supplying a wireless sensor network (WSN) for environment monitoring demonstrates the applicability of this system in a real application. The case study confirms self-sustainable operation of an application with a 550 µW power footprint. With a maximum harvested power of up to 27.2 mW during the day and 6.3 mW during the night, a significant improvement in both average and maximum harvested power is demonstrated compared to the state-of-the-art.

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Thermal Energy Harvesting from Asphalt Roadway Pavement

Cited by 11 publications

References 2 publications

Evaluation of the Pavement Geothermal Energy Harvesting Technologies towards Sustainability and Renewable Energy

Evaluation of the Pavement Geothermal Energy Harvesting Technologies towards Sustainability and Renewable Energy

Temperature Measurements on a Solar and Low Enthalpy Geothermal Open-Air Asphalt Surface Platform in a Cold Climate Region

Thermoelectric Energy Harvesting From Gradients in the Earth Surface

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