Water Power Peer Review

1
Water Power Peer Review

• Patrick Grandelli, P.E.

• Modeling the Physical and Biochemical Influence
  of Ocean Thermal Energy Conversion Plant
  Discharges into their Adjacent Waters

• Makai Ocean Engineering, Inc.
• Pat.Grandelli_at_Makai.com, 540-439-8971
• 27 Sep 2011

2
Purpose, Objectives, Integration

• How do we design an OTEC plant to sustainably and
  economically process and discharge the massive
  seawater flows associated with OTEC?
• Use a numerical model to quantify OTEC discharge
  component design, OTEC performance, and
  environmental changes that may result from OTEC
  flows.
• This bio-plume modeling supports other OTEC
  development efforts funded by NavFac, Lockheed,
  ONR and the State of Hawaii

• For 100 MW
• 420 m3/s WW (7 M gpm)
• 320 m3/s CW (5 M gpm)

3
Technical Approach

• Numerical ocean circulation model of Hawaii.
  (HIROM)
• Numerical simulation of plankton growth caused by
  nitrate enrichment. (in EFDC)
• Validate the circulation model with new (2010)
  current and density data. (e.g., temperatures
  at right indicate vertical nutrient oscillation.)

4
Plan, Schedule, Budget

• Schedule
• Initiation date 16 Sep 2010, (Final contract
  during Jan 2011)
• Planned completion date 29 Feb 2012
• FY 11 Milestones
• Dec 2010 - Retrieval of oceanographic mooring
  with 7 months of CTD and ADCP data
• April 2011 - Delivered oceanographic data to NOAA
  Liaison at the University of Hawaii
• May 2011 - Gave briefing to David Kennedy,
  Assistant Administrator for National Ocean
  Service
• Aug 2011 Larger domain on Linux running
  successfully
• Sep 2011 Biological module running successfully
• Sep 2011 Presented paper at Marine Technology
  Society Oceans11 conference
• Budget 240 K DoE, 161 K Lockheed Makai
• No significant budget variances. Subconsultants
  labor has been less than budgeted
• Expenditures as of 15 Sep 2011 220,091

Budget History Budget History Budget History Budget History Budget History Budget History
FY2009 FY2009 FY2010 FY2010 FY2011 FY2011
DOE Cost-share DOE Cost-share DOE Cost-share
0 0 120 K 133 K