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Capabilities and Experience
CASCADED HUMIDIFIED ADVANCED TURBINE
The power generation community recognizes CHAT as combining superior economics and operations with proven technology. |
The Cascaded Humidified Advanced Turbine (CHAT), patented by Dr. Nakhamkin, capitalizes on proven combustion turbine technology, which combined with a sophisticated thermal cycle results in efficiency comparable to combined cycles, while maintaining advantages and merits of a simple-cycle combustion turbine. Based on a slightly modified combustion turbine and integrated with available industrial compressors and expanders, the CHAT plant offers: specific capital costs that are twenty percent lower than a combined-cycle plant; superior part load and off-design performance; and simple cycle starting characteristics. These characteristics make CHAT the best choice for intermediate and base load operation.
The CHAT Technology is Protected by the Following Patents:
Cascaded Advanced High Efficiency Multi-Shaft Reheat Turbine with Intercooling and Recuperation
US Patent # 5,347,806
Method of Generating Power with High Efficiency Multi-Shaft Reheat Turbine with Intercooling and Recuperation
US Patent # 5,386,688
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CHAT plants are being commercially offered by ESPC, a number of leading consulting engineering companies, and gas turbine manufacturers. |
In cooperation with a leading combustion-turbine manufacturer, ESPC conducted thorough CHAT-cycle engineering, including optimization of thermal cycle parameters, preliminary engineering, cost estimation, and commercial offerings. During the evolution of the concept, ESPC developed unique skills such as:
· Establishing Component Design Parameters for Optimum Overall Performance
· Off-Design Equipment and Cycle Analyses, including Part-Load Performance and Response to Ambient Variations
· Dynamic Analyses Establishing Equipment and Plant Responses to Transients, such as Starts, Stops, Ramps, Loss-of-Load, and Malfunctions
· In-Depth Knowledge of Combustion Turbines, Industrial Compressors, Fired Expanders, and Combustors
· Detailed Knowledge of Supporting Component Designs, such as: Heat Exchangers, Saturators and Heat Recovery Devices, Including Needed Optimizations to Economically Fit the Overall Cycle
· Interaction with Manufacturers to Guide Component Development to Fit this Concept and to Evolve the Most Economical Design
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