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Article

The Climate Road—A Multifunctional Full-Scale Demonstration Road That Prevents Flooding and Produces Green Energy

Research Center for Built Environment, Energy, Water and Climate, VIA University College, 8700 Horsens, Denmark
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Academic Editors: Liseane Padilha Thives and Enedir Ghisi
Water 2022, 14(4), 666; https://doi.org/10.3390/w14040666
Received: 28 January 2022 / Revised: 15 February 2022 / Accepted: 19 February 2022 / Published: 21 February 2022
This paper presents a multifunctional full-scale demonstration road, the Climate Road, which combines climate adaptation and mitigation in a single system. The Climate Road is located at Hedensted, Denmark and is 50 m long and 8 m wide, and the depth of the roadbed is 1 m. Half of the Climate Road, i.e., 25 m, is paved with permeable asphalt and the remaining 25 m with traditional asphalt. All surface water drains into the roadbed, which stores up to 120 m3 of water, either directly through the permeable asphalt or by drain grates. In addition, 800 m of geothermal pipes are embedded in the roadbed, distributed over four 200 m w-loops, two buried 1 m below the asphalt and two similar loops at 0.5 m depth. The Climate Road was tested from May 2019 to May 2021. In the project period, a total precipitation value of 1654 mm was recorded, the mean temperature was 9.3 °C and the most intense rainfall was 40.3 mm/30 min. The long-term infiltration performance of the permeable asphalt shows that the overall infiltration capacity slowly reduces. The reduction can be hindered, but not completely prevented, with annual restorative cleaning. After two years of operation, the Climate Road still, by a large margin, fulfils the recommendations of the infiltration capacity of 97.2 mm/h for the vast majority of the road section. The total volume reduction capacity is estimated to be between 15 and 30%. Based on an analysis of 61 single rain events, the event detention time is found to range between 10 and 130 min, with an average of 35 min. During the project period, the Climate Road produced a total of 98 MWh for a nearby kindergarten, with an average coefficient of performance (COP) of 3.1. View Full-Text
Keywords: permeable asphalt; climate adaptation solution; geothermal energy; GSHP; SUDS permeable asphalt; climate adaptation solution; geothermal energy; GSHP; SUDS
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MDPI and ACS Style

Andersen, T.R.; Poulsen, S.E.; Tordrup, K.W. The Climate Road—A Multifunctional Full-Scale Demonstration Road That Prevents Flooding and Produces Green Energy. Water 2022, 14, 666. https://doi.org/10.3390/w14040666

AMA Style

Andersen TR, Poulsen SE, Tordrup KW. The Climate Road—A Multifunctional Full-Scale Demonstration Road That Prevents Flooding and Produces Green Energy. Water. 2022; 14(4):666. https://doi.org/10.3390/w14040666

Chicago/Turabian Style

Andersen, Theis Raaschou, Søren Erbs Poulsen, and Karl Woldum Tordrup. 2022. "The Climate Road—A Multifunctional Full-Scale Demonstration Road That Prevents Flooding and Produces Green Energy" Water 14, no. 4: 666. https://doi.org/10.3390/w14040666

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