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Green energy you can rely on
Copyright © 2015 Ormat Technologies, Inc.
Closed Cycle Vapor Turbogenerators
(CCVT) for Reliable Remote Applications
Jean Gropper
Ormat Power, Inc.
e-mail: jgropper@ormat.com
Remote Monitoring and Control Conference – Las Vegas
November 5, 2015
Copyright © 2015 Ormat Technologies, Inc.
Disclaimer
Information provided during this presentation may contain statements relating to current expectations, estimates, forecasts andprojections about future events that are forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995.
These forward-looking statements generally relate to the company’s plans, objectives and expectations for future operations, and arebased on management’s current estimates and projections of future results or trends. Actual future results may differ materially fromthose projected as a result of certain risks and uncertainties.
For a discussion of such risks and uncertainties, please see risk factors as described in the Annual Report on Form 10-K filed with thesecurities and exchange commission on February 26, 2015.
In addition, during this presentation, statements may be made that include a financial measure defined as non-GAAP financial measuresby the Securities and Exchange Commission, such as EBITDA and adjusted EBITDA. These measures may be different from non-GAAPfinancial measures used by other companies. The presentation of this financial information is not intended to be considered in isolationor as a substitute for the financial information prepared and presented in accordance with GAAP.
Management of Ormat Technologies believes that EBITDA and adjusted EBITDA may provide meaningful supplemental informationregarding liquidity measurement that both management and investors benefit from referring to this non-GAAP financial measures inassessing Ormat Technologies’ liquidity, and when planning and forecasting future periods. This non-GAAP financial measures mayalso facilitate management’s internal comparison to the company’s historical liquidity.
EBITDA and Adjusted EBITDA are not a measurement of financial performance or liquidity under accounting principles generallyaccepted in the United States of America and should not be considered as an alternative to cash flow from operating activities or as ameasure of liquidity or an alternative to net earnings as indicators of our operating performance or any other measures of performancederived in accordance with accounting principles generally accepted in the United States of America. EBITDA and Adjusted EBITDA arepresented because we believe they are frequently used by securities analysts, investors and other interested parties in the evaluation ofa company’s ability to service and/or incur debt. However, other companies in our industry may calculate EBITDA and Adjusted EBITDAdifferently than we do.
Copyright © 2015 Ormat Technologies, Inc. All Rights Reserved. This document contains information proprietary to Ormat Technologies,Inc. Reproduction in any form without prior written permission is strictly prohibited
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Copyright © 2015 Ormat Technologies, Inc.
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Introduction
• The objectives for high reliability in telecommunications, cathodic
protection and SCADA systems in strategic projects are very demanding
• Power generators must operate continuously 24/7, 365 days per year
with high reliability, low maintenance and long life
• The Ormat CCVT was originally part of a program related to the
harnessing of solar energy started in 1958
• Conversion of solar heat into power needed a heat engine to operate at
low temperatures (below 200°C/392°F)
• There were no suitable prime movers for these low temperatures and
small sizes. The steam turbines or steam engines available were almost
useless with these limitations, and gas and hot air engines were entirely
inapplicable
• Decision: to design a prime mover for the application, based on a
Rankine cycle
Copyright © 2015 Ormat Technologies, Inc.
Introduction
• A turbine was chosen rather than a reciprocating engine
• Steam was replaced by other working fluids
• Criteria for the selection of optimum working were established
• Fluids were selected and tested for stability
• The turbine has been designed to be as reliable and maintenance-free
as possible
• 300W hermetically sealed fuel fired prototypes were operated in 1964
• The inherent high reliability and low maintenance units opened an
application field for fossil fuel-fired units for on-site power generation in
remote locations
• Over 3000 units ranging from 200W to 4kW have been operating
successfully for the last 5 decades
• Hundreds of millions of operating hours in the field, demonstrating the
technical viability of this concept
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Copyright © 2015 Ormat Technologies, Inc.
The Closed Cycle Vapor Turbogenerator (CCVT)
• The Closed Cycle Vapor Turbogenerator (CCVT) is a Rankine cycle
hermetically sealed turbogenerator having one smoothly rotating
moving part
• The unit is adaptable to a wide range of heat sources including
natural gas, liquid petroleum gases and others
• CCVT operates for many years 24 hours a day; 365 days a year
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Copyright © 2015 Ormat Technologies, Inc.
The Closed Cycle Vapor Turbogenerator (CCVT)
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1
2
3
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Burner heats the motive fluid in the
vapor-generator
Motive fluid changes state into vapor
Vapor rotates the turbo-alternator
wheel, creating AC voltage
Vapor flows into the condenser,
cools down and changes state into
liquid
Copyright © 2015 Ormat Technologies, Inc.
• The alternator is mounted on the same shaft as the turbine and its output voltage
is a function of the rotational speed of the turbine and the stator field excitation
current.
• The power output depends on the amount of heat furnished by the burner.
• The burner is located outside of the sealed system which, unlike internal
combustion engines, isolates the turbine wheel from the combustion
contaminants.
• The alternator and turbine shaft rotate on hydrostatic-hydrodynamic bearings.
• No metal-to-metal contact and, therefore, no mechanical wear.
• The motive fluid lubricates the hydrodynamic bearings, so no external lubrication
is required.
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The Closed Cycle Vapor Turbogenerator (CCVT)
Copyright © 2015 Ormat Technologies, Inc.
• Digital Turbine Control Unit for remote monitoring
• Safety, control circuits and devices for fail-safe operation
• Protection against all operational anomalies and malfunctions
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• The output voltage is regulated by controlling the amount of fuel which flows to
the burner. This is accomplished by a pre-set upper and lower voltage sensing
circuit which monitors the output DC voltage and, in turn, closes or opens a fuel
valve
Figure 2 – Block-Diagram of a CCVT unit
Copyright © 2015 Ormat Technologies, Inc.
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• Over 50 years of field proven experience
• Major telecommunications projects
• Oil and gas industry along pipelines
• Offshore platforms
• DC power for telecommunications networks, telemetry and SCADA
systems, pipeline cathodic protection systems, motorized valve controls,
navigational aids and remote emergency lighting
• Thousands of units in Antarctica, North America, South America, Siberia
and Far East of Russia, Africa, India and Australia
Field Experience with CCVT
Copyright © 2015 Ormat Technologies, Inc.
Trans - Alaska Pipeline Project
• 122 CCVTs in operation since
1976
• Deployed in the incredibly harsh
Alaskan winter environment
(with temperatures falling to
-60°C in the winter with snow
loads to 90 psi)
• CCVTs, originally designed
for twenty years of service
are still in operation, exceeding
design objectives by more than
twenty years
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CCVT’s on the Trans - Alaska Pipeline
Copyright © 2015 Ormat Technologies, Inc.
Installation of New 1200W OEC Units in Existing RGV
Station
• Customer’s Request:
• Upgrade and replace the
telecom/RTU/SCADA equipment in
the RGV stations with equipment
that requires almost double
the power
• To avoid the expense of redesigning
and installation of new infrastructure
the original mechanical and electrical
interface between the CCVTs and
the equipment shelter were to
be kept as original
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Copyright © 2015 Ormat Technologies, Inc.
Gas Pipelines Projects in Siberia
• Very harsh environment -60°C (-76°F) to
+40°C (+104°F) in the summer.
• Proven MTBF = 80,000 hours
(a number of CCVTs have each reached
MTBF of 245,280 hours)
• The proven, recorded mean time
to critical failure (MTBCF) is no
less than 300,000 hours
• Frequency of CCVTs maintenance
services no more than once a year
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CCVTs in a typical site in Siberia
Copyright © 2015 Ormat Technologies, Inc.
Power Solutions for Sakhalin II Project
• Very harsh environment -39°C (-38°F) to +37°C
(+97°F) in the summer
• Snow thickness = 4 ft
• Earthquakes up to 9.0 on Richter scale
• 102 unattended sites supplied with EPS
(Energy Power Systems) based on CCVT with
battery back-up
• Frequency of CCVTs maintenance
services no more than once a year
• Each EPS comprises also:
1. Gas Pressure Reducing Skid
2. Cathodic Protection Panels
3. VRLA battery for 24 hr back-up
4. Non-electric heating system
5. Telecom and RTU equipment
6. HVAC
• In operation since 2006
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CCVTs in a typical site in Sakhalin
Copyright © 2015 Ormat Technologies, Inc.
South America Experience.
• Since 1969 over 500 CCVT’s of 600W to 1200W have been powering 5,800km of the microwave telecommunications networks, many of which are still in operation:
• Rio Gallegos – ComodoroRivadavia
• Azul – Mar del Plata
• Mendoza – Cordoba
• Santa Fe – Resistencia
• Rio Grande - Ushuaia.
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Typical Microwave Repeater Site, Ushuaia,
Argentina, Since 1971
Copyright © 2015 Ormat Technologies, Inc.
Australian Experience
• After over 25 years of
continuous CCVT operation
along the Dampier to Bunbury (DBP)
natural gas pipeline
DBP (WA) Nominees Pty, Ltd.
decided to upgrade the
remote pipeline stations
• Mechanical and electrical
interchangeability with existing CCVT’s
was required in order to keep
the existing infrastructure of the stations
• Harsh Environment with
temperatures reaching
+48 ºC (+117°F) and strong winds
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CCVT remote Power unit along
the 1800km DBP pipeline
Copyright © 2015 Ormat Technologies, Inc.
Offshore Experience
• Very reliable power source
for application on unmanned
offshore platforms,
despite the harsh operating
conditions
• Providing power for SCADA,
navigation aids and
telemetry systems as well as
for floating and recharging
secondary batteries
• OECs provide the main power for
many offshore, unmanned platforms,
in the Adriatic Sea, South East of Asia
(Indonesia, Malaysia, Thailand, Vietnam)
and in the North Sea
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OECs on an offshore platform in
the Angsi field, Malaysia
Copyright © 2015 Ormat Technologies, Inc.
Conclusions
• Field proven high inherent reliability
• Hundreds of millions of operating hours in actual field applications
• Lower life cycle cost than alternative systems
• Low maintenance requirements and simplicity
• The CCVT has proven to be a cost effective, dependable and
highly reliable power source
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Copyright © 2015 Ormat Technologies, Inc.
THANK YOU
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Jean Gropper
Ormat Power, Inc.
e-mail: jgropper@ormat.com
Colin Duncan
Ormat Nevada Inc.
e-mail: cduncan@ormat.com
Phone: 775-334-0134
Contacts:
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