Flexible Seawater Desalination With LMS100 Gas...

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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

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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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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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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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73 feet 22.2 meters

113 feet 34.4 meters

Current package dimensions

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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)

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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 !

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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 %

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Load Following / Deep Turndown Capability

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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

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

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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

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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