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While gas turbines accounted for 15 percent of the power generation industry in 1998, they are expected to account for 40 percent of U.S. power generation by 2020. A 2009 Forecast International study estimates the global installed base for industrial gas turbines at 46,455 units consisting of 21 percent (9,755 units) aeroderivative, 46 percent (21,370 units) light frame units, and the remaining 33 percent (15,330 units) as large frame turbines (3). The large frame units (e.g. above 120 MWe size) are typically installed for utility-scale power generation and are usually configured for combined cycle service with large heat recovery steam generators for bottom cycling. The small to medium size gas turbine markets are typically sold as simple cycle units because of the difficulties and economics in scaling down steam systems for combined cycle service. The small to medium gas turbine market makes sense for other bottom cycling technologies such as the supercritical CO2 based power cycle which can deliver smaller, more economical solutions for bottom cycling. We estimate that a 10 percent market share to install Echogen heat engines as a bottoming cycle on existing and new 20-120 MWe, simple cycle GTs projected over the next five years would be an opportunity estimated at more than $3B. ECHOGEN’S UNIQUE TECHNOLOGY Echogen is currently commercializing a waste (useable) heat to power system through development of a proprietary thermal engine which is entering the product introduction and customer demonstration phase of development for industrial markets. The Echogen heat engine consists of five main components: exhaust and recuperator heat exchangers, condenser, system pump, and power turbine (Figures 1 and 2). Ancillary components (valves and sensors) provide system monitoring and control. Heat energy is introduced through an exhaust heat exchanger installed into the exhaust stack of a gas turbine or the furnace or flue gas exhaust of an industrial process, or other external heat sources with 200oC to greaterothan 540oC o operating temperature range (400 F to greater than 1000 F). Echogen’s technology can provide integrated power, heating and/or cooling through a flexible system architecture, that can be configured for power, co-generation or tri- generation. The useable energy can be generated from the turbine exhaust heat without burning fuel or producing resultant emissions which will provide the added benefit of reducing greenhouse emissions while improving overall energy efficiency. The sCO2 heat engine is a platform technology scalable from 250 kWe to greater than 50 MWe to support the widest possible variety of industrial and utility scale applications. The Echogen technology is thermal source agnostic, meaning that it is suitable with a wide range of heat sources for energy recovery with efficiencies up to 30 percent. Our patent-pending thermal Figure 1: Simplified process flow diagram for the Echogen heat engine. 3PDF Image | Echogen Power Systems SCO2
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