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Behavior of Capstone and Honeywell Microturbine Generators During Load Changes Microturbine Performance (High-pressure and low-pressure natural gas): • Full Load Power • Efficiency (LHV) • Heat Rate (LHV) Emissions (natural gas fuel): • NOx Other: • Noise level • Fuel flow (natural gas - HHV) • Exhaust gas temperature • Total exhaust energy • Dimensions • Weight • V oltage 30 kW (HP unit), 28 kW (LP unit) at ISO conditions, 59 degrees F, sea level 27 % +/- 2 points (HP Unit), 26% +/- 2 points (LP Unit) 12,600 Btu/kWh (HP Unit), 13,000 Btu/kWh (LP Unit) <9 ppmV / 6.7 g/hr / 0.0147 lb/hr 65 dBA @ 10 meters 410,000 Btu/hr / 428,000 kj/hr 520 degrees F / 271 degrees C 277,000 Btu/hr / 295,000 kj/hr (base @ 59 deg. F / 15 deg. C) 74.8”Hx28.1”Wx52.9”D 1900 mm H x 714 mm W x 1344 mm D 1052 lbs / 478 kg 400 - 480 VAC, 3 phase, 4 wire wye or 3 wire wye, ungrounded delta, 43 A max The Capstone MTG is designed to operate at constant temperature for best efficiency and lowest emissions. The power output of the turbine is varied by changing the turbine speed. The ramping rate of the turbine is limited by flame stability in the combustor, according to Capstone engineers. The fastest possible ramp up from 0 to full load takes about 10 seconds. The current unit should be able to ramp from 0 to full load in about 30 seconds while in grid-connect mode and about 20 seconds while in stand-alone mode. Although the current unit cannot vary power factor while in grid-connect mode, new software available in 2001 will allow power factor adjustment. The current unit is not able to change from grid-connect to stand-alone mode without a complete shutdown. Work is being done to design the unit so it can make this transition without shutting down. 2.2.2 The Honeywell Parallon Microturbine The Parallon microturbine operates much like the Capstone MTG. The Parallon’s specifications include: Microturbine Performance (with low-pressure natural gas): • Full Load Power • Efficiency (LHV) Emissions (natural gas fuel): • NOx (at 15% O2) 75 kW gross (not including the compressor load) at ISO conditions, 59 degrees F, sea level, +/- 0.75 PF 27.5 % not including gas compressor and transformer <50 ppm full power 59 degrees F, sea level 4PDF Image | Behavior of Capstone and Honeywell Microturbine Generators During Load Changes Consultant Report
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