Institute for Energy Transition
dedicated to Marine Renewable Energies
RSS News
Symbole FEM
19/10/2018

Mooring and Anchoring Research Engineer

The lighthouse of the Jument seen from the sky
26/09/2018

Using the building as an experimental device on a scale of 1:1.

MISTRAL sea test site: Informational meeting
17/09/2018

Informational meeting at Port-Saint-Louis-du-Rhône city on September 14th.

Example of colonization by benthic species of a sumarine cable - BREBENT Project, FEM-IFREMER
14/08/2018

To study in an integrated way the impact of floating wind farms.

OES Annual Report 2017
13/03/2018

This Annual Report presents an overview of the activities undertaken within OES in 2017, as well as updated country reviews prepared by the Delegates

IMPALA

Impacts on micro-plankton of artificial upwelling inputs

Project description

The IMPALA project focuses on Ocean Thermal Energy Conversion (OTEC) which consists of using the temperature difference between the surface and the depths of the ocean to operate a thermal machine. The production of OTEC is optimal when the temperature difference becomes greater than 20°C (typically 5°C at depth at -1000 m and 25°C at surface) which is the case in tropical areas.
The IMPALA project aims to study the potential impacts of deep water discharges in the subsurface of an ocean thermal power plant. Indeed, the subsurface supply of water of very different background, temperature and chemical composition, as well as the cooling of surface water at the exit of the exchanger, could locally induce a modification of the functioning of the planktonic ecosystem equivalent to the implementation of an artificial upwelling.

Objectives

  • Specify the biogeochemical processes involved in an artificial upwelling related to the operation of an OTEC plant in an oligotrophic environment
  • Improve knowledge of tropical environments and their biogeochemical functioning in order to apply it to the study of the impacts of the discharge of future OTEC plants at sea

Partners

IMPALA project partners