A CFD analysis of several design parameters of a road pavement solar collector (RPSC) for urban application

Nasir, Diana S.N.M.; Hughes, Ben Richard; Calautit, John Kaiser

doi:10.1016/j.apenergy.2016.04.002

Cited by 43 publications

(21 citation statements)

References 29 publications

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“…The application of ASC in the urban setting was found to be significantly effective compared with the rural domain. In their extended work, the ASC system was optimized in terms of pipe diameter, pipe depth, water velocity, and water temperature, for both urban and rural domains. Further, they analyzed the effect of urban form (symmetric and asymmetric height of the urban street canyon) on the performance of ASC and found that there was a significant reduction in the ASC performance when taller building row was behind the first approaching building row.…”

Section: Technologies Of Energy Harvesting From Pavements and Roadwaysmentioning

confidence: 99%

Energy harvesting from pavements and roadways: A comprehensive review of technologies, materials, and challenges

2019

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Summary Energy harvesting from pavements has been a topic of extensive research in the recent past. This domain has attracted not only the research community but also the industry and governmental authorities. The various sources exploited for energy harvesting from pavements and roadways are solar radiation, mechanical energy dissipated due to moving vehicles and pedestrians, geothermal energy, rainwater, and wind. This article presents an exhaustive and updated review of all potential means of energy harvesting from these sources. Following the introductory section, the article sequentially covers the energy harvesting methods and their research progress, materials, development of practical systems, commercial status, comparison of technologies, challenges, and concluding remarks. This study reveals that there is wide scope for further research and feasibility studies, which could lead to a wide‐spread implementation of the various technologies for energy harvesting from pavements and roads.

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Section: Technologies Of Energy Harvesting From Pavements and Roadwaysmentioning

confidence: 99%

Energy harvesting from pavements and roadways: A comprehensive review of technologies, materials, and challenges

2019

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“…Scenario 1 was set as the reference case, which consisted of the concrete wall, without substrate or plant. The thickness of the wall was 0.3 m, and roughness length value was 0.02 [30]. Scenario 2 was planted with wire-drawing facade greening.…”

Section: Description Of the Scenariosmentioning

confidence: 99%

Cooling and Energy-Saving Performance of Different Green Wall Design: A Simulation Study of a Block

Zheng

Shen

et al. 2019

Energies

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To mitigate the urban heat island (UHI) and release the low carbon potential of green walls, we analyzed the cooling and energy-saving performance of different green wall designs. Envi-met was applied as the main simulation tool, and a pedestrian street named Yuhou Street was selected as the study object. Four designs of walls were summarized and simulated, demonstrating the living wall system (LWS). Super soil had superiority in cooling and energy saving. Outdoor air temperature, indoor air temperature, outside wall surface temperature, and inside wall surface temperature were analyzed. Apart from the outdoor air temperature, the other three temperatures were all significantly affected by the design of green walls. Finally, energy savings in building cavities were determined. The indoor energy saving ratio of the LWS based on super soil reached 19.92%, followed by the LWS based on boxes at 15.37%, and green facades wall at 6.29%. The indoor cooling powers on this typical day showed that the cooling power of the LWS based on super soil was 8267.32 W, followed by the LWS based on boxes at 6381.57 W, and green facades wall at 2610.08 W. The results revealed the difference in cooling and energy-saving performance of different green walls in this typical hot summer area.

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“…Their work also found that the PSC system can decrease the ambient temperature and mitigate the UHI effect. Another work (Nasir et al, 2017a) has analysed the PSC system performance and assessed the influence of the pipe diameter, depth, inlet water velocity and inlet water temperature of PSC pipes. The asphalt pavements with higher conductivity tend to provide higher temperature, and solar energy would be transported faster (Guldentops et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

A Coupled Modelling Method for the Evaluation of the Impact of Pavement Solar Collector on Urban Air Temperature and Thermal Collection

Jimenez-Bescos

Pantua

et al. 2021

Future Cities and Environment

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The Urban Heat Island (UHI) effect is a phenomenon whereby urban areas become warmer than their surrounding rural areas, due to the replacement of vegetation and soil with surfaces such as asphalt and concrete. The asphalt pavement surfaces tend to absorb a large amount of heat through solar radiation and increase the air temperature, which affects the operation of building heating and cooling systems, causing environmental problems and thermal discomfort. However, this energy can be collected by water circulated through buried copper pipes to cool down temperatures and be stored for other usages. This work aims to develop a method for determining the optimum areas to locate pavement solar collector (PSC) systems and simulate the reduction of ambient air and surface temperature by using a coupled computational modelling approach. Discrete ordinate model and solar-ray tracing were utilised for solar radiation effect modelling in the 3D simulation. Furthermore, the PSC prototype was developed, and lab-scale experiments were carried out for validation. Based on the simulated conditions, in the unshaded area, the asphalt slab's near-surface temperature was reduced by up to 10℃ and the outlet water temperature increased by about 5℃. At the pedestrian height level, the air temperature was reduced up to 4.6℃. This study further expands the investigation of the variation of outdoor conditions such as air temperature and solar radiation. The results showed that the proposed method could be used to optimise the pavement solar collector's positioning to reduce urban surface and air temperature.

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A CFD analysis of several design parameters of a road pavement solar collector (RPSC) for urban application

Cited by 43 publications

References 29 publications

Energy harvesting from pavements and roadways: A comprehensive review of technologies, materials, and challenges

Energy harvesting from pavements and roadways: A comprehensive review of technologies, materials, and challenges

Cooling and Energy-Saving Performance of Different Green Wall Design: A Simulation Study of a Block

A Coupled Modelling Method for the Evaluation of the Impact of Pavement Solar Collector on Urban Air Temperature and Thermal Collection

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