Closed Cycle Vapor Turbogenerators (CCVT) for Reliable Remote Applications

Transcription

1 Closed Cycle Vapor Turbogenerators (CCVT) for Reliable Remote Applications Remote Monitoring and Control Conference Las Vegas November 5, 2015 Jean Gropper Ormat Power, Inc. Green energy you can rely on

2 Disclaimer Information provided during this presentation may contain statements relating to current expectations, estimates, forecasts and projections about future events that are forward-looking statements as defined in the Private Securities Litigation Reform Act of These forward-looking statements generally relate to the company s plans, objectives and expectations for future operations, and are based on management s current estimates and projections of future results or trends. Actual future results may differ materially from those 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 the securities and exchange commission on February 26, In addition, during this presentation, statements may be made that include a financial measure defined as non-gaap financial measures by the Securities and Exchange Commission, such as EBITDA and adjusted EBITDA. These measures may be different from non-gaap financial measures used by other companies. The presentation of this financial information is not intended to be considered in isolation or 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 information regarding liquidity measurement that both management and investors benefit from referring to this non-gaap financial measures in assessing Ormat Technologies liquidity, and when planning and forecasting future periods. This non-gaap financial measures may also 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 generally accepted in the United States of America and should not be considered as an alternative to cash flow from operating activities or as a measure of liquidity or an alternative to net earnings as indicators of our operating performance or any other measures of performance derived in accordance with accounting principles generally accepted in the United States of America. EBITDA and Adjusted EBITDA are presented because we believe they are frequently used by securities analysts, investors and other interested parties in the evaluation of a company s ability to service and/or incur debt. However, other companies in our industry may calculate EBITDA and Adjusted EBITDA differently than we do. All Rights Reserved. This document contains information proprietary to Ormat Technologies, Inc. Reproduction in any form without prior written permission is strictly prohibited 2

3 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 3

4 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 4

5 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 5

6 The Closed Cycle Vapor Turbogenerator (CCVT) 4 Vapor flows into the condenser, cools down and changes state into liquid 3 Vapor rotates the turbo-alternator wheel, creating AC voltage 2 Motive fluid changes state into vapor 1 Burner heats the motive fluid in the vapor-generator 6

7 The Closed Cycle Vapor Turbogenerator (CCVT) 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. 7

8 Figure 2 Block-Diagram of a CCVT unit Digital Turbine Control Unit for remote monitoring Safety, control circuits and devices for fail-safe operation Protection against all operational anomalies and malfunctions 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 8

9 Field Experience with CCVT 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 9

10 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 CCVT s on the Trans - Alaska Pipeline 10

11 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 11

12 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 CCVTs in a typical site in Siberia 12

13 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 CCVTs in a typical site in Sakhalin 13

14 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 Comodoro Rivadavia Azul Mar del Plata Mendoza Cordoba Santa Fe Resistencia Rio Grande - Ushuaia. Typical Microwave Repeater Site, Ushuaia, Argentina, Since

15 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 15 CCVT remote Power unit along the 1800km DBP pipeline

16 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 OECs on an offshore platform in the Angsi field, Malaysia 16

17 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 17

18 THANK YOU Contacts: Jean Gropper Ormat Power, Inc. Colin Duncan Ormat Nevada Inc. Phone: