An Engine System Approach to Exhaust Waste Heat Recovery - EERE
An Engine System Approach to Exhaust Waste Heat Recovery - EERE
An Engine System Approach to Exhaust Waste Heat Recovery - EERE
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Technical Progress – HP Turbine +2%Technology 2 – Mixed Flow Turbine• Nozzle-less, divided volutefirst-passGas Stand Test Results0.8500radialmixed flowTurbine Aero efficiency (T-S)0.80000.75000.70000.65000.60000.55000.50000.45000.40005%Imperial College Test DataMixed Flow TurbineBase Turbine0.40000 0.50000 0.60000 0.70000 0.80000 0.90000 1.00000 1.10000Velocity ratio, U/C• + 2-3% turbine efficiency• Efficiency peak at lowerU/C a improved exhaustpulse utilization• + 5-6% efficiency atlower U/CCaterpillar Non-Confidential
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