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Turbomachinery for Energy Harvesting
Presented by:
Yong Nak Lee, Ph.D.
HTRD Ltd.
1010 W. Lonnquist Blvd.
Mt. Prospect, Illinois, USA 60056
September, 2012
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© 2011 Concepts ETI, Inc. All rights reserved.
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Energy Recovery and Storage
Technology Expertise
Single Component Organic Rankine Cycles
Bottoming cycles
Ocean Thermal Energy Conversion (OTEC)
Geothermal
Multi-Component Working Fluid Organic Rankine Cycles
Kalina Cycle (ammonia-water)
Multi-refrigerant
Supercritical CO2 Cycles
Hybrid Brayton Cycles
Turbo-compressor (turbocharger)
Turbo-compound (power or electricity)
Open Cycle Vapor Recompression
Pressurized Air Storage Systems
Cryogenic Liquid/Gas Storage Systems
Pumped Liquid Storage Systems
Systems Analysis
Component & Assembly Design and Manufacturing
Installation and Testing
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Basic Organic Rankine Cycle Flow Diagram
Basic Organic Rankine Cycle uses
heat energy from any number of
energy sources including waste
heat, solar energy, geothermal, or
even ocean water gradient
temperature to generate useful
power.
The turbine can be single or
multistage, radial, or axial
machines.
A cooling stream of ambient air or
cooling water is needed to remove
heat from the condenser. That
energy could also be useful for low
grade heating
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Some Examples of ORC Bottoming Cycles for
Geothermal to Transportation Vehicles
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Waste Heat Recovery from Engine Exhaust
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ORC Diesel Engine Heat Recovery of the Engine Exhaust Heat System for Long Haul Trucks Can
Improve Vehicle Fuel Eff. by 10-15%
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© 2011 Concepts ETI, Inc. All rights reserved.
30 kW ORC Turbine and Gearbox Assembly
for Diesel Engine Heat Recovery
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14 MW ORC System for Nippon Steel (1980’s)
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© 2011 Concepts ETI, Inc. All rights reserved.
2.5 MW ORC Turbine Generator Unit for
Solar Power Plant
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ORC T.G.U. Assembly Mfg.d by Concepts NREC (CN) Turbine
Integrated with the 20,000 rpm Permanent Magnet Generator
The integrated turbine- generator does not use shaft
seals or speed reducer and
thus is compact, efficient, and
reliable.
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Advanced Geothermal ORC System Cycle Uses
Geothermal Energy at 325 F to Produce Power
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OTEC Thermodynamic Cycle Using the Small (less than 30 F)
Ocean Thermal Gradient to Generate Useful Power
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Kalina Cycle Flow Diagram
Kalina Cycle uses a mixture of ammonia and water through the vapor generator to improve the recovery of heat energy and uses an ammonia turbine to provide the power recovery at a higher efficiency.
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500 kW Ammonia Based OTEC Turbine
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600 kWe Turbine Generator Unit using
Ammonia-Water Working Fluid in a Kalina Cycle
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Supercritical - CO2 Cycle A Supercritical -
CO2 Cycle
operates above
the critical
pressure and
temperature for
the fluid (1000 psia
and 500 F) to
produce power
with CO2 . This
cycle is attractive
for very high
temperature
applications;
typically above
1500 F
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Supercritical CO2 Turbine –Compressor Module
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U.S. Sandia National Laboratory Maintains a
S-CO2 Research Lab Facility
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Ocean Wave Energy Recovery Using an
Oscillating Water Column (OWC) System
An OWC water wave
energy system has
the highest wave to
power conversion
efficiency potential
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