eco-friendly and cost-effective lng solutions for lng carriers driven ... kwangpil san… ·...

마스터 제목 스타일 편집

Eco-friendly and Cost-effective

LNG Solutions for LNG Carriers driven

by New Propulsion Systems

April, 2017

Hyundai Heavy Industries

1Corporate Research Center

Shipbuilding Division / HYUNDAI LNG CARRIER

마스터 제목 스타일 편집CONTENTS

1 Introduction

2 Trend of propulsion system for LNG carriers

3 Key parameters of FGSS of LNG carriers

4 Fuel supply system for LNG carriers

5 Hi-SGAS, new FGSS for LNGC propulsion system

6 Economic evaluation of LNG carriers

7 ecoSMRTTM (SMR)

8 Gas turbine-powered LNG carriers

9 Conclusion



마스터 제목 스타일 편집1. Introduction

3

Sream Turbine[HMM 125K LNGC]

1991

2001

Steam Turbine[GOLAR 137K LNGC]

2013

DFDE LNGC[BP 155K LNGC]

2004

2009

X-DF LNGC[GASLOG 174K LNGC]

Under Construntion

2013

ME-GILNGC[KNUTSEN 176K LNGC]

Slow-speed Diesel+Re-Liquefaction LNGC

[QG 216K LNGC]

Innovations & enhancements of LNG carriers

2016

X-DF + Hi-SGAS LNGC[SK 180K LNGC]

Under Design

Gas Turbine powered LNGC

Joint Development with GE

Corporate Research Center


2014

UST LNGC[MISC 150K LNGC]


Propulsion system for LNG carriersMain interests in propulsion system

- FOC Reduction (High Efficiency)

- BOG Handling

2. Trend of propulsion systems for LNG carriers

4

BOG : Boil-Off Gas

FOC : Fuel Oil Consumption

2006 2012

Steam Turbine Slow-speed Diesel with Re-Liquefaction

DFDE

ME-GI

or

X-DF



?


Engine

Efficiency

3. Key parameter for FGSS of LNG carriers

5

Voyage

ProfileBOR

Fuel

Price

Various options and combinations

can be possible for propulsion systems

with innovative FGSS in LNG carriers

to reduce fuel cost during an voyage

Availability



Variety of approaches to enhance FGSS & propulsion systems


TFDE

GCU

No.2 HP Compressor

ME-GI

HP LNG Pump

MistSeparator

Fuel Gas Heater

No.1 HP Compressor

Spray/FuelGas Pump

Vaporizer

Fuel Oil Tank

BOG

Diesel

Engine

BOG

compressor

Fuel OilReliquefaction

Diesel

Engine

G

G

Fuel Oil Tank

Steam

BOG

Boiler

HP Turbine

LP Turbine

GDiesel

Engine

BOG

compressor

Fuel Oil

6

4. Fuel supply system for LNG carriers

Steam Turbine Slow-speed Dieselwith Re-Liquefaction

DFDE



ME-GI X-DF X-DF (Hi-SGAS)

마스터 제목 스타일 편집5. Hi-SGAS (Hyundai Innovative-Smart GAs System)

7

Conventional X-DF application Hi-SGAS X-DF application

Less flow to compressor

saves energy



Hi-SGAS is improved solution for X-DF fuel gas supply system Hi-SGAS saves cost by reducing the energy for compressing BOG

마스터 제목 스타일 편집5. Hi-SGAS (Hyundai Innovative-Smart GAs System)

8

Conventional Hi-SGAS

Schematic

Diagram

F.G.S.S.

(Power

Consumption)

Laden Centrifugal

Centrifugal : ∇140 kW

Screw : ∇180 kW

Reciprocating : ∇340 kW

Ballast Centrifugal

Centrifugal : ∇230 kW

Screw : ∇340 kW

Reciprocating : ∇510 kW

FOC Reduction

(Laden / Ballast)- 0.5 ~ 1.6 ton/day

Based on 180K LNGC, 0.085%, 19.5 knot



Efficiency Increase of X-DF with Hi-SGAS Especially, better solution at lower BOR solution

마스터 제목 스타일 편집6. Economic Evaluation



Vessel speed : 19.5 kt

Laden 165 days

Ballast 165 days

DFDE XDF ME-GI

100% 98% 106%

CAPEX Difference

Payback Time for ME-GI

Payback Time

(CAPEX Difference)

XDF 60 Years

180K LNGC base

BOR: 0.1% per day

LNG Price: 380 USD/ton

HFO Price: 310 USD/ton

MGO Price: 480 USD/tonVessel speed is 19.5 kt

13.8M

10.2M 9.8M

What is the most efficient solution with consideration of CAPEX & OPEX

Fuel Consumption for 1 year


10

Source: DNV

Excess BOG Estimation

180K X-DF LNGC

BOR: 0.1% per day

Laden BOG: 3,125 kg/h

SPEED

(kt)

ENGINE

POWER

(kW)

BOG

CONSUMPTION

(kg/h)

EXCESS

BOG

(kg/h)

12.0 5,190 1125.0 2000.0

12.5 5,860 1220.8 1904.2

13.0 6,590 1320.8 1804.2

13.5 7,370 1429.2 1695.8

14.0 8,190 1545.8 1579.2

14.5 9,070 1666.7 1458.3

15.0 9,990 1787.5 1337.5

15.5 10,980 1916.7 1208.3

16.0 12,040 2058.3 1066.7

16.5 13,150 2204.2 920.8

17.0 14,310 2362.5 762.5

17.5 15,560 2537.5 587.5

18.0 16,880 2720.8 404.2

18.5 18,270 2920.8 204.2

19.0 19,760 3133.3 0.0

19.5 21,380 3362.5 0.0

7. ecoSMRTTM (SMR)



Excess BOG Handling Issues Excess BOG exists at most of laden voyage

Without any systems to handle excess BOG,

BOG should be burnt away or obligated higher vessel speed is necessary to keep tank pressure

마스터 제목 스타일 편집Motivation for development of ecoSMRT

11

ERS N2 Brayton MR

ecoSMRT

7. ecoSMRTTM (SMR)




• 1.5 t/h capacity: Normal operation condition at 15 knots

• 2.5 t/h capacity: For handling BOG at port condition

• 3.5 t/h capacity: For handling BOG at all condition including HFO operation mode

12

BOG (Laden)

3,080 kg/h

Excess BOG

At port condition

2,480 kg/h

Excess BOG

(HFO mode)

3,080 kg/h

Excess BOG

At Normal operation

(15kt ship speed)

1,020 kg/h

M/E fuel consumption at 15 knots

: 1460 kg/h

DFDE fuel consumption

: 600 kg/h

1.5 ton/h 2.5 ton/h

3.5 ton/h

7. ecoSMRTTM (SMR)



Application of ecoSMRT for marine system


13

• Fewer pieces of equipment compared to existing MR designs

• Only one piece of rotating equipment

• Simpler control system

• No secondary refrigeration loop

7. ecoSMRTTM (SMR)



SMR

Benefits of ecoSMRT - Reduced complexity


14

• Fewer pieces of equipment with a significantly smaller footprint

• Easier retrofit integration

7. ecoSMRTTM (SMR)



Benefits of ecoSMRT - Compact footprint


15

▼ 200 kW

▼ 50 kW

7. ecoSMRTTM (SMR)

MR SMR

100% 94%

CAPEX Difference

SMR is a best option for excess BOG handling



Benefits of ecoSMRT – Less power consumption

Pure methane base

마스터 제목 스타일 편집7. ecoSMRTTM (SMR)

16

180K LNGC base

BOG: 0.1% per day

SMR: 1.5 tphcapacity

LNG Price: 380 USD/ton

HFO Price: 310 USD/ton

MDO Price: 480 USD/ton



Voyage Distance: 5400 NM

Vessel Speed: 19.5 kt

Voyage Days: 115 days


Vessel Speed: 15 kt


Fuel Price

(M USD)

XDF Application


Vessel Speed: 19.5 kt



Vessel Speed: 15 kt


Fuel Price

(M USD)

ME-GI Application

Effective BOG re-liquefaction systemMore than 0.8 M USD can be reduced for 10 laden voyage

마스터 제목 스타일 편집8. Gas Turbine-powered LNG Carriers



World’s first gas turbine-powered LNG carrier

• IMO Tier III compliance without SCR/EGR in LNG/MGO operation

• Approval in Principle (LR, July 2015)

• Developed jointly with GE Aviation and Marine

마스터 제목 스타일 편집9. Conclusion

18

Eco-friendly, Energy-saving, Cost-effective LNG solutions

• “Flexible & Robust Technologies to be considered”

• Approaches depending on capacity, vessel speed, the duration of voyages, specific factors

The best solution for LNG carrier

• Low BOR CCS

• High efficiency propulsion systems

- X-DF + Hi-SGAS

• Cost effective & high performance BOG re-liquefaction systems

- Compact full re-liquefaction

- Flexibility on speed, operation variations



eco-friendly and cost-effective lng solutions for lng carriers driven ... kwangpil san… ·...

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