TIDMREH
RNS Number : 4505T
Renewable Energy Holdings plc
06 December 2011
6 December 2011
Renewable Energy Holdings plc
("REH" or the "Company")
Re: Carnegie Demonstration Project Preliminary Design
Complete
Renewable Energy Holdings plc (AIM: REH), the AIM quoted
investor in, and operator of, European wind power, notes an
announcement released on 6 December 2011 by Carnegie Wave Energy
Limited, in which REH holds 232,600,000 fully paid ordinary shares,
representing 25.8% of the entire issued share capital.
"6th December 2011
Demonstration Project Preliminary Design Complete
-- Preliminary design for grid-connected project complete
-- Optimum size is approximately 2MW peak capacity
-- Significantly increased CETO unit power
-- Unit installation down from 7 days to 24 hours
Wave energy developer Carnegie Wave Energy Limited (ASX: CWE) is
pleased to announce the completion of the preliminary design for
the first CETO grid-connected project.
Following the successful in-ocean trial of the CETO 3 commercial
scale unit earlier this year, Carnegie's technical team has
analysed a huge quantity of data allowing further validation and
development of the CETO design utilising Carnegie's virtual
modelling capabilities. This analysis and design work has focused
on the full CETO system including the CETO unit design and
foundations, pipeline and onshore power generation facility.
It concludes that the first grid-connected CETO demonstration
project should be between 1 and 5MW peak capacity with an optimum
of approximately 2MW peak.
Carnegie's CEO and Managing Director, Dr Michael Ottaviano
said,
"The completion of the preliminary design for the 2MW
grid-connected project represents a major step forward in CETO's
technology maturity. The next phase of the process is for Carnegie
to confirm a final location for this demonstration project. This
will be Carnegie's first power project and will deliver our first
project-based revenues through the sale of the electricity
generated."
Selection of the location of the project site will allow the
completion of detailed project design ahead of project
construction.
Unit Optimisation
The CETO 3 analysis has provided the basis to optimise the
Buoyant Actuator's hydrodynamic properties to increase power output
through more efficient energy capture and conversion.
Through optimisation of the Buoyant Actuator geometry, the
preliminary design offers a two-fold increase in power production
from the CETO 3 unit, with only relatively minor modifications,
thereby delivering a significant reduction in the cost of
generation.
Power Generation Facility
The onshore power generation facility contains the
hydro-electric equipment including the Pelton Wheel Turbine,
electrical switchgear and the instrumentation and control system.
The preliminary design ensures high availability through redundant
systems, in particular the turbine and generator.
Significant effort has been put toward designing, modelling and
simulating the control algorithm that regulates the pressures in
the pipelines. The physical footprint of the onshore facility has
also been minimised to allow flexibility in siting and to ensure
minimal visual impact.
Foundation
The design of the pile foundation has been largely focussed on
the integration of a quick-connect system to allow CETO units to be
installed and operational within a 24 hour window. This is in
contrast to the 7 days required for the CETO 3 installation. The
design incorporates both the structural and hydraulic connections
using proven technology originating from offshore oil and gas
applications. The new installation method, devised following
learnings from the CETO 3 deployment, also tailors the diving and
vessel requirements to those that are locally available in all
prospective demonstration sites reducing installation cost and
risk.
Pipeline to Shore
A small bore (200mm nominal diameter) pipeline carries the
hydraulic energy back to shore from the CETO unit array and has
been a focus of hydraulic modelling and optimisation work.
Transient effects have been managed through careful sizing of surge
vessels allowing a smaller pipeline than would have otherwise been
possible. At the outlet of the turbine a similar pipeline returns
the water-based working fluid back to the array for
re-pressurisation. Optic fibre communications cables piggy-back the
pipeline connecting the CETO unit instrumentation to the control
system onshore.
Indicative pipeline routing
About CETO
The CETO system distinguishes itself from other wave energy
devices by operating out of sight and being anchored to the ocean
floor. An array of fully submerged buoys is tethered to seabed pump
units. The buoys move in harmony with the motion of the passing
waves, driving the pumps which in turn pressurise water that is
delivered ashore via a pipeline.
On shore, high-pressure water is used to drive hydroelectric
turbines, generating zero-emission electricity. The high-pressure
water can also be used to supply a reverse osmosis desalination
plant, replacing greenhouse gas emitting electrically driven pumps
usually required for such plants.
CETO Technology characteristics include:
-- CETO converts ocean wave energy into zero-emission electricity and desalinated water
-- CETO is environmentally friendly, has no visual impact and attracts marine life
-- CETO is fully submerged in deep water away from breaking
waves, beachgoers and where it is safe from storms
About Carnegie
Carnegie Wave Energy Limited is an Australian, ASX-listed (CWE)
wave energy technology developer. Carnegie is the 100% owner and
developer of the CETO Wave Energy Technology intellectual
property."
Ends
For further information, please contact:
Renewable Energy Holdings plc Tel: +44 (0) 16 2464
Mike Proffitt, Chief Executive 1199
Strand Hanson Limited Tel: +44 (0) 20 7409
Rory Murphy / James Spinney 3494
Novus Capital Markets Ltd Tel: +44 (0)20 7107
Nicholas Lee 1881
FTI Consulting Tel: +44 (0) 20 7831
Billy Clegg / Ed Westropp / Alex Beagley 3113
This information is provided by RNS
The company news service from the London Stock Exchange
END
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