Thermal and hydraulic analysis of multilayered asphalt pavements as active solar collectors

P. Pascual-Muñoz, D. Castro-Fresno, P. Serrano-Bravo, A. Alonso-Estébanez

Research output: Contribution to journalArticle

42 Citations (Scopus)
3 Downloads (Pure)

Abstract

The fulfillment of current environmental aims like reducing fossil fuel consumption or greenhouse gas emissions entails the development of new technologies that enable the use of cleaner, cheaper and renewable energies. Furthermore, the need to improve energy efficiency in buildings encourages scientists and engineers to find new ways of harvesting energy for later uses.

The use of asphalt pavements as active solar collectors is introduced in this article. Several authors have studied the use of roads as an energy source before. However, a new technology is presented in which a multilayered pavement with a highly porous middle layer is used instead of a solar collector with an embedded pipe network. These collectors are fully integrated within the road infrastructure and may offer low cost solar energy for water heating.

The paper includes a brief comment on the state-of-the-art. Then, a broad methodology is presented in which data, materials and procedures needed to run the tests are fully described. Finally, the results of the laboratory tests are stated and discussed.

The prototype used in the laboratory provided excellent thermal efficiency. However, these good results contrast with the low flow rate levels registered during the tests. Thus, although this technology seems to be very promising, new experimental tests should be performed before an effective application is possible.
Original languageEnglish
Pages (from-to)324-332
Number of pages9
JournalApplied Energy
Volume111
Early online date4 Jun 2013
DOIs
Publication statusPublished - Nov 2013
Externally publishedYes

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in
Applied Energy. Changes resulting from the publishing process, such as peer
review, editing, corrections, structural formatting, and other quality control
mechanisms may not be reflected in this document. Changes may have been made
to this work since it was submitted for publication. A definitive version was
subsequently published in Applied Energy, [[111] (2013)] DOI:
10.1016/j.apenergy.2013.05.013

© 2017, Elsevier. Licensed under the Creative Commons Attribution-
NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • Asphalt collector
  • Porous layer
  • Irradiance
  • Slope
  • Thermal efficiency

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