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Flexible Seawater Desalination With LMS100 Gas Turbine Using MED and RO Combinations Bulent Mehmetli / Richard Watkins POWER-GEN Middle East, 13 October 2014
GE Proprietary Information – Class I
LMS100 presentation contents
• GE’s Aeroderivative Gas Turbines and LMS100 genealogy
• Intercooler and secondary heat rejection options
• How Multi Effect Distillation is applied
• Customer benefits
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GE Proprietary Information – Class I
GE Proprietary Information – Class I
Gas turbine product line LM2500/TM2500
18-34 MW @ 41% eff. • Legacy engine: 40+years • 99% reliability; 1M OPHs
Applications • Emergency/temp power • Verticals: Mining, oil and gas • Marine: defense, fast ferry
Wins • Japan: Emergency response • Ecuador/Oman: Temp power • Brazil: FPSO/Oil & Gas
LM6000
40-60 MW+ @ 42% eff. • Intro ’91 … 1,000th unit ’10 • Fast response flexible CC … 140 MW @ 55+% efficiency
• Cleaner heat and power • LNG/Mechanical drive • Dual fuel DLE
• China: Huadian CHP • US: Black Hills, Colorado • Brazil: Sugarcane ethanol
LMS100
100-116 MW @ 44.5% • New DLE 2.0 technology • Global acceptance
• Grid stability • Power generation • Mechanical drive
• Russia: ’14 Olympics in Venue, Sochi • US: 23 (+5) California units
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GE Proprietary Information – Class I
CF6-80C2 • Introduced in ’85 • 3,800 units • 173 million hours
Design experience and commonality LMS100
LM6000 • Introduced in ’91 • 991 units • 21 million hours • 99% reliability • 98% availability
6FA • Introduced in ’96 • 100 units • 2.5 million hours
* LMS100 is a registered trademark of the General Electric Company (USA)
LMS100* Genealogy Building on proven technology
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GE Proprietary Information – Class I
MS6001FA Low Pressure Compressor (LPC) Aeroderivative
Intermediate Pressure Turbine (IPT)
Frame derivative Exhaust diffuser
Aeroderivative Power Turbine (LPT)
Frame derivative Power turbine shaft
Intercooler System
CF6-80C2 High Pressure Compressor (HPC)
CF6-80E High Pressure Turbine (HPT)
Aeroderivative Single annular or DLE combustor
Proven technologies integrated in a 3-shaft 100+ MW gas turbine package
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GE Proprietary Information – Class I
73 feet 22.2 meters
113 feet 34.4 meters
Current package dimensions
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GE Proprietary Information – Class I
Intercooler is the key to LMS100 performance Enables high mass flow, pressure ratio, hot-day power
VBV silencer
VBV system
Cooling water skid
LMS100
Frame Frame
Aero
Power reduction over ambient T
392 deg F (200 deg C)
56 psi
(3.9 bar)
95 deg F (35 deg C)
55 psi
(3.8 bar)
Intercooler water flow: 22,711 lpm (6,000 gpm) for 2-pass 52C (125 F) to 28C (82 F) 8,706 lpm (2,300 gpm) for 6-pass 90C (195 F) to 28C (82 F)
GE Proprietary Information – Class I
Ideal T-S Diagram for an intercooled gas turbine cycle (using LMS100 thermodynamic cycle station numbers)
Entropy
Tem
pera
ture
2
23
25
3
41
50
Qcomb
Qic
Qexh
A fundamentally more efficient cycle is enabled by modern control technology
Note: Not drawn to scale High Pressure Compressor
Low Pressure Compressor
Exhaust ~ 90 MWth, ~ 39%
LMS100 Energy Balance at Baseload, hot & humid day
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Fuel~ 234MWth, LHV
Interc ooler ~ 34 MWth, ~ 15%
Generator power ~ 103 MWe, ~ 44%
Generator losses
Other losses
Rough figures, details depend on ambient and model conditions !
GE Proprietary Information – Class I
CHP (CC + Intercooler Heat)
Fin Fan Cooler 35 0C
50 0C
Water 121 0C 300 t/hr
Heat Exchanger Process:
~ 27 MWt 11.5% eff.pts.
Steam Turbine: ~ 20.5 MWe
8.5% eff.pts.
Gas Turbine: ~ 103 MWe
44 % eff.pts.
TOTAL CHP 124 MWe+27 MWt
64 %
GE Proprietary Information – Class I
Load Following / Deep Turndown Capability
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GE Proprietary Information – Class I
Cengiz Energy Samsun, Turkey (2) LMS100s in CC (250 MW) Cooling system uses seawater (Black Sea)
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GE Proprietary Information – Class I
GE Proprietary Information – Class I
Multiple Effect Distillation
Distillate vapor
Sea water (Distillate)
Tubes or plates
Bulb enclosure Vessel
Heating fluid from intercooler
Heating fluid back to intercooler
MED Advantages
• Low energy consumption
• Low temp operation
• Simple
• Reliable
• Low opex
Distillate
GE Proprietary Information – Class I
MED – RO Combination
• LMS100 can operate at either CC or SC mode
• If SC is chosen, all exhaust heat is available for MED (or MSF if feasible)
• If CC is chosen:
• CC efficiency>52% for full condensing configuration
• Use extraction to increase MED capacity
• Use MED for Intercooler heat
• Use all extra heat (from condenser, stack and IC) for RO heating
• Adjust MED/RO according to power and water needs
GE Proprietary Information – Class I
1. Fast starts … zero to 100% in 10 minutes
2. High efficiency ... +44% in SC
3. Fast response … 50 MW per minute ramp-up
4. Power for frequency support … reserved power, under frequency support
5. High part load efficiency ... for flexible operation
6. Multiple daily starts … no maintenance penalties
7. Cycle type … ability to run SC or CC
8. Zero water capable with DLE
9. High availability and reliability … longer maintenance intervals
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LMS100 in Desalination Configuration … set the benchmark for defining operational flexibility while sustaining medium size power and water needs