Page E1.2 . 07 April 2004                     
ArchitectureWeek - Environment Department
< Prev Page Next Page >
  • Barcelona Runs Deep
  • Architectural Global Warming

    [an error occurred while processing this directive]
      Current Contents
      Blog Center
      Download Center
      New Products
      Products Guide
      Classic Home
      Architecture Forum
      Architects Directory
      Topics Library
      Complete Archive
      Web Directory
      About ArchWeek
      Subscribe & Contribute
      Free Newsletters


    [an error occurred while processing this directive]

    Barcelona Runs Deep


    Tapping Water for Energy Efficiency

    In the 19th-century, the textile industry in this region of the city drew heavily from the water table. Now that the thirsty factories are gone, the water has risen again, as high as 23 feet (7 meters) below ground level, creating intrusion problems in some of the district's deeper basements.

    This unwanted water surplus has been creatively tapped in the BCN@ctiva project. Two 100-foot- (30-meter-) deep wells at opposite ends of the site harness up to 18,000 gallons (70,000 liters) of water per hour. Some of this goes to non-potable water functions such as landscape irrigation and sanitary services. Some of the water contributes thermal energy and is returned to the water table.

    The wells provide water at a constant temperature of 64 degrees Fahrenheit (18 degrees Centigrade), which is higher than the outdoor air temperature in the winter and lower than that in the summer. Depending on the season, heat or cold is mechanically extracted from the water.

    Thermal storage tanks totaling 3500 cubic feet (100 cubic meters), located two and three levels below grade, hold the heated or cooled water before it is circulated through the buildings' climate control systems.

    When the system is operating, the output is 4 kilowatts of cold or 5.3 kilowatts of heat for every kilowatt of electricity used in the extraction process. This hydrological exploitation system becomes, in a sense, a hidden vertebral column that "supports" the whole site.

    Discuss this article in the Architecture Forum...

    Miguel Roldán and Mercedes Berengué are principals of R+B Architects. They received the commission for this project as a result of a design competition in 2000. Construction was completed in 2003.



    ArchWeek Image

    The visually horizontal Barcelona Activa, by R+B Architects, holds an underground secret to its energy efficiency.
    Photo: Eva Serrats

    ArchWeek Image

    Transverse section, Barcelona Activa.
    Image: R+B Architects

    ArchWeek Image

    Plaza-level floor plan, Barcelona Activa.
    Image: R+B Architects

    ArchWeek Image

    Light-filled interior of Barcelona Activa.
    Photo: Eva Serrats


    Click on thumbnail images
    to view full-size pictures.

    < Prev Page Next Page > Send this to a friend       Subscribe       Contribute       Media Kit       Privacy       Comments
    AW   |   GREAT BUILDINGS   |   DISCUSSION   |   SCRAPBOOK   |   BOOKS   |   FREE 3D   |   SEARCH © 2004 Artifice, Inc. - All Rights Reserved