Repurposing waste steam and hot water to accelerate plant growth in heated green roofs

Robert Dell, Runar Unnthorsson, C. S. Wei, William Foley

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Citations (Scopus)

Abstract

Municipal steam district heating services such as New York City's Consolidated Edison's have no recirculation system. The waste heat, usually in the form of steam condensate and hot water, is mixed with and cooled by municipal potable water. Since 2006, The Center for Innovation and Applied Technology and The Laboratory for Energy Reclamation and Innovation at the Cooper Union have been developing a system to use this thermal pollution to heat the growth medium of green roofs. The authors have also constructed three geothermal heated gardens systems in Iceland. American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE) specifications for heated sidewalks were referenced in all locations. The heated green roofs have the potential to save more than 2,000,000 cubic meters of potable water if applied to 40% of Consolidated Edison's steam customers. Plant growth is often accelerated by 20% or more in all locations.

Original languageEnglish
Title of host publicationEnergy
PublisherThe American Society of Mechanical Engineers(ASME)
ISBN (Print)9780791856291
DOIs
Publication statusPublished - 2013
EventASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013 - San Diego, CA, United States
Duration: 15 Nov 201321 Nov 2013

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume6 B

Conference

ConferenceASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013
Country/TerritoryUnited States
CitySan Diego, CA
Period15/11/1321/11/13

Other keywords

  • Cascade utilization
  • Enhanced growing season
  • Heated ground agriculture
  • Heated soil
  • Waste heat

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