GE ORegen Brochure
Contents
1. GE Oil amp Gas ORegen Waste Heat Recovery System for GE and other OEM Gas Turbines Benefits w Addressing environmental problems is becoming an important initiative throughout the world The reduction of CO2 emissions is a key element in the path toward lowering the human contribution to climate change Many industrial processes generate waste energy that passes out of plant stacks into the atmosphere and is lost Energy recovered from waste heat streams could supply part or all of the electric power required by a plant at no additional cost Therefore heat recovery offers a great opportunity to conserve by productively using this waste energy to reduce overall plant energy consumption and simultaneously decrease CO gt emissions ORegen is a trademark of Nuovo Pignone S p A and is available in select markets a product of ecomaginations p lt a A Layout of a plant equipped with the ORegen waste heat recovery system What it is Power generation with zero additional emissions ORegen is a thermodynamic superheat cycle that recovers waste heat from gas turbine exhaust and converts it into electric energy The thermodynamic cycle is based on an Organic Rankine Cycle ORC Heat from the turbine exhaust is transferred to a closed diathermic oil loop which is used to heat an organic fluid loop This lower temperature heat is then converted into useful work that can ge2. No additional EHS considerations e Readily available at low cost Organic fluid circulation pumps Cooling air a Air cooled condenser d E VOporized Expander organic fluid generator set m Liquid organic fluid Diothermic oil ee Gas turbine exhaust Nitrogen blanketting hot oil storage Hot oil pump ORegen vs Steam Cycle Features ORegen Standard Steam Combined Cycle Water free i Low maintenance is i Power flexibility aay i Low investment Er ss Plant simplicity i R Reduced footprint Re No replenishment of working fluid la w Unmanned capability i Additional output ae vee Expected ORegen Power Output for Mechanical Drive and Power Generation Gas Turbines Gas Gas Turbine Exhaust Exhaust GasTurbine ORegenGross System Turbine Power Flow Temp Efficiency Output Efficiency Model KW Kg sec C MWe PGT25 23 261 68 9 525 Silt 6 9 48 9 PGT25 31 364 84 3 500 41 1 7 9 515 PGT25 G4 55 973 89 0 510 41 1 8 6 51 5 5001 26 830 125 2 483 28 4 us 40 4 S5002C 28 340 124 3 517 28 8 12 4 41 4 S5002D 32 580 141 4 509 29 4 13 8 41 9 S6001B 43 530 145 0 544 353 15 6 45 2 LM6000 43 397 125 6 454 41 7 9 7 Sid Reference data ISO Conditions 100 GT Turbine load one to one configuration Values at gas turbine shaft Values at generator terminals for LM6000PC coupled to 60 Hz generator Scope of S
3. nerate electricity The ORC works with a hydrocarbon fluid in place of water The system is similar to a conventional steam bottoming cycle except for the organic fluid that drives a turboexpander that in turn drives the generator The diathermic oil and the organic fluid allow low temperature heat sources to be exploited efficiently to produce electricity over a wide range of power output from a few MW up to 16 MW per unit Gas turbine exhaust gas Diathermic oil Oil heater Organic working liquid Vaporizer Expander generator set Condenser How it works Closed loop system The organic working fluid is vaporized and pressurized in the evaporator by the application of heat taken from the gas turbine exhaust stream Then the vapor expands in the turboexpander and is condensed using air cooled heat exchangers at ambient conditions The condensate is pumped back to the evaporator thus closing the thermodynamic cycle The heating and cooling sources are not in direct contact with the working fluid nor with the expander For higher temperature applications a high temperature thermal oil is used as the heat carrier and a regenerator is added to further improve the cycle performance The selection of the working fluid is key in a Rankine Cycle The features are e Low freezing point and high temperature stability e High heat of vaporization and density e Low environmental impact e
4. upply The basic scope of supply includes the following e Organic fluid system e Diathermic oil system e Boilers and heat exchangers M a e Turboexpander genset e Piping and BOP components e Air or water cooler __ Organic Fluid System GE Oil amp Gas Global Headquarters Via Felice Matteucci 2 50127 Florence Italy T 39 055 423 211 F 39 055 423 2800 GE imagination at work Nuovo Pignone S p A Nuovo Pignone S r l E customer service center ge com www ge com oilandgas GE the GE Monogram and imagination at work are registered trademarks of the General Electric Company COMK MARK 839 II Designed by Studio Tre Fasi Printed by Sagraf 12 2011 2011 General Electric Company All Rights Reserved
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