Laboratory Study on Solar Collector of Thermal Conductive Asphalt Concrete

To keep pavements free of ice and to heat and cool adjacent buildings, there is currently interest in using asphalt pavements and airport runways as environmentally friendly solar collectors. This study investigates the process of heat energy extraction from asphalt pavements. A heat exchanger was created from small laboratory prepared asphalt concrete slabs with copper tubes inserted in them through which water flowed. An indicator of heat exchange efficiency was a water temperature rise as a result of flow through the asphalt concrete slab. To improve asphalt concrete thermal conductivity, thermal conductive fillers were utilized, and resulted in improved asphalt collector efficiency. Experimental results showed that conductive asphalt concrete can be used to enhance heat energy obtained from solar irradiation. Within asphalt concrete, circulating water has a cooling effect which decreases temperature, thus reducing permanent deformation risk. To prepare an effective heat exchanger capable of extracting maximum asphalt pavement heat, focus is on mixture design.

  • Availability:
  • Authors:
    • Wu, Shaopeng
    • Chen, Mingyu
    • Wang, Hong
    • Zhang, Yuan
  • Publication Date: 2009-7

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01145214
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 30 2009 2:19PM