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What Makes the ICR 225 Gas Turbine Unique? The ICR 225 gas turbine generator set provides 225 kW (300 hp) for rapid acceleration, passing, hill climbing and sustained high power. Very efficient in this mode, it uses a patented process to achieve equally high efficiency at 75 kW (100 hp) when the vehicle is in traffic or cruising on highways. The low emissions characteristics of the turbine are well suited to meet 2010 emission requirements. Conventional Microturbine In a typical microturbine, air is compressed, preheated in a recuperator and heated further in a combustor. The hot gas expands through the turbine wheel that drives the compressor and the generator. The turbine discharge gas then enters the recuperator and preheats the air entering the combustor to reduce the input fuel required. ICR 225 Gas Turbine at High Power The ICR 225 gas turbine uses two stages of compression to increase the cycle pressure. An intercooler is employed to reduce compressor temperatures and increase power density. The high pressure ratio increases the temperature drop across the turbine wheels which allows much higher turbine inlet temperatures. Ceramic turbine wheels similar to those that have been mass-produced for turbochargers are used. Variable turbine nozzles control the pressure ratio and mass flow to increase efficiency at part load. The free-floating turbine generator handles step loads through momentum while the two turbine/compressor rotors accelerate. The ICR 225 Gas Turbine at Low Power When operating in the critical low power mode, the 225 kW generator set becomes a 75 kW generator set affording exceptionally high efficiencies by reducing the mass flow and keeping the turbine inlet temperature high Air now enters the high-pressure compressor instead of the low-pressure compressor. The mass flow and therefore the power are reduced by a factor of three. The steady state temperatures and shaft speed at 75 kW are the same as at 225 kW, thereby minimizing thermal and mechanical shock. The result is outstanding high efficiency at low power with transition to high power in less than one second. Lower mass flow also reduces pressure drop in the flow path increasing power and efficiency. Out Out Recup Out Recup Recup Comb Comb In Comp Turb Gen In In Comp Turb Gen Comp Turb Gen Comb Out Out Recup Out Recup Recup Comb In I/C Turb Gen I/C In In Comp Turb Comp Turb Comb Comp Turb Comp Comb Turb Comp Turb Turb Gen I/C Turb Gen Comp Turb Recup Recup Recup Comb Comb Comp Comb Turb Comp Turb Comp In Turb In Turb Gen Comp I/C Out Out Turb Comp Turb Comp Turb I/C In Turb Gen I/C Turb Gen Out Cost Over ten million turbochargers are produced each year at very low cost. The ICR concept is to use commercially available parts to capture the benefit of the quantity scales that currently exist in the market place. Additionally Capstone microturbines have proven performance with millions of operating hours. When both technologies are coupled together a very highly reliable and cost effective turbine engine is the result. The ICR Team: The ICR team includes Agile Turbine Technology, Brayton Energy, and Capstone Turbine Corporation. AGILE TURBINE TECHNOLOGY, LLC AgileTurbineTechnologydesignsadvancedvehicleengines. Themicroturbine-based engines use patented technology to achieve high efficiency at both full load and part load withveryfastthrottleresponse. TheAgileenginesrepresentthemostcost-effective means for meeting efficiency and emission goals on either liquid or gaseous fuels. BRAYTON ENERGY, LLC Brayton Energy is a research and development firm specializing in turbomachinery, high temperature heat exchangers, and advanced combustion systems. Brayton’s experienced engineering team has pioneered many advancements related to microturbines and gas turbines. CONTACT Robin Mackay Agile Turbine Technology, LLC 3020 Highland Avenue, Manhattan Beach, CA 90266 Tel: 310-546-9641 mackay@agileturbine.com CAPSTONE TURBINE CORPORATION Capstone Turbine Corporation is the world’s leading producer of low-emission microturbine systems, and was first to market with commercially viable microturbine energy products. CapstoneTurbinehasshippedthousandsofCapstoneMicroTurbinesystemstocustomers worldwide. These award winning systems have logged millions of documented operating hours.PDF Image | The ICR 225 Vehicle Engine
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