MGO cooling system [互換モード] · PDF fileto switch to 0.1%‐sulphur‐content marine fuel oil according to Article 4b of ... installed on the outlet of MGO cooler, the MGO

MGO COOLING SYSTEMMGO COOLING SYSTEMMAYEKAWA MFG. CO., LTD.MAYEKAWA MFG. CO., LTD.Marine DivisionMarine DivisionEcology and Energy Dept.Ecology and Energy Dept.

Copyright © 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved.

Current regulation : New sulphur limits in marine fuel1. Sulphur control for international shipping1. Sulphur control for international shipping

1.1 Revised IMO MARPOL Annex VI – 2008

• SOx, PM, Fuel – RegulationsSOx, PM, Fuel Regulations • Regulation 14 • Sulphur Oxides (SOx) and Particulate Matter (PM)

The sulphur content of any fuel oil used globally shall not exceed:The sulphur content of any fuel oil used globally shall not exceed:

• 4.5% m/m S, prior to 1 January 2012• 3.5% m/m S, on and after 1 January 2012• 0.5% m/m S, on and after 1 January 20200.5% m/m S, on and after 1 January 2020

The sulphur content of any fuel oil used in designated emission control areas (ECA) shall not exceed:

• 1.5% m/m S, prior to 1 July 20105% / S, p o o Ju y 0 0• 1.0 %m/m S, on and after 1 July 2010• 0.1% m/m S, on and after 1 January 2015

Copyright © 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 2

Current regulation : New sulphur limits in marine fuel1.2 California Air Resources Board (CARB):

• 17 CCR, section 93118.2, title 17

• Airborne Toxic Control Measure for Fuel Sulfur and other operational Requirements for Ocean‐going Vessels within Californian Waters and 24 Nautical Miles of the Californian baseline.

• For main (propulsion) diesel engines, auxiliary diesel engines (including diesel electric) and auxiliary boilers.

• Fuel oil Effective date Fuel• Phase Ⅰ July 1, 2009 Marine gas oil (DMA) at or below 1.5% sulfur or

Marine diesel oil (DMB) at or below 0.5% sulfur

Ph Ⅱ J 1 2012 M i il (DMA) i di l il (DMB)Phase Ⅱ Jan. 1, 2012 Marine gas oil (DMA) or marine diesel oil (DMB)At or below 0.1% sulfur


Current regulation : New sulphur limits in marine fuel1.3 European Union

• Council Directive 1999/32/EC of 26 April 1999 relating to a reduction in the sulphur content of certain liquid fuels and amending Directive 93/12/EEC, amended by Directive 2005/33/EC.

A f 1 J 2010 hi b th d f l th t h t t i th E U i i d• As of 1 January 2010, ships berthed for longer than two hours at ports in the European Union are required to switch to 0.1%‐ sulphur‐content marine fuel oil according to Article 4b of Directive 2005/33/EC.

2. Operational conditions/requirements approaching ports in Europe related to fuel change over.

• Destination : Port inside an ECA• • Global cap 4.5 (3.5)% S, Heavy Fuel Oil, heatedp ( ) , y ,• • ECA 1.5 (1)% S, Heavy Fuel or Distillate Oil, heated or unheated• • At Berth 0.1% S, Low Sulphur Distillate Oil, unheated or cooled

• Destination: Port without ECA• Destination: Port without ECA• • Global cap 4.5 (3.5)% S, Heavy Fuel Oil, heated• • At Berth 0.1% S, Low Sulphur Distillate Oil, unheated or cooled


Surfaced problemShip’s machineries are not designed to use with low sulphurp g pfuel of which the viscosity is very low, so their performance or lubrication, etc. are affected and deteriorated.


SolutionBy cooling the fuel, it is possible to increase the viscosity.

How to read the chart ?• According to ISO8217 DMA/X, the nominal viscosity (cST) is at reference condition of 40C.For example ;• In order to obtain 3 cST of MGO with a viscosity 2 cST at 40C, it is necessary to cool it down

to 18C.


Location of MGO cooling systemOur standard MGO cooling system needs to be installed beforeOur standard MGO cooling system needs to be installed before the circulating pumps.


Mayekawa MGO cooling systemIndirect cooling system between fresh water and marineIndirect cooling system between fresh water and marine fuel (MGO)

MGO COOLERMGO COOLER

FRESH WATERCHILLING UNIT

M/E

MGOCIRCULATION

MGO

CHILLEDFRESH

PUMPCONDENSERCOOLING

G/EFRESHWATER

COOLING WATER


MGO

• The system consists of fresh water chilling unit, fresh water circulation pump, fresh water head tank and MGO coolers

Mayekawa MGO cooling systemwater head tank and MGO coolers.

• And MGO to be cooled to the specific temperature being heat‐exchanged by chilled fresh water.


Advantages of MAYAKAWA’s MGO cooling system1. Compact and flexible designed fresh water chilling unit

• In the aim of installing the unit not only for the new building ships but also for the existing ships our units are so designed as to minimize thealso for the existing ships, our units are so designed as to minimize the foot print to be installed at the limited machinery space.

• For the condenser, it is possible to choose either fresh water cool or sea water cool type.


① Fresh water condenser type (MMCS35F)MGO fresh water chilling unit① yp ( )


MGO fresh water chilling unit② Sea water condenser type (MMCS35S)② yp ( )


MGO fresh water chilling unit③ Dimension of standard units (Fresh water condenser)

Model El. Motor Dimension of unit

MMCＦ20F 22 HP 1000L x 1000W x 1950HMMCＦ25F 25 HP 1000L x 1000W x 1950HMMCＦ30F 30 HP 1000L x 1000W x 1950HMMCＦ35F 35 HP 1000L 1000W 1950HMMCＦ35F 35 HP 1000L x 1000W x 1950HMMCＦ40F 40 HP 1000L x 1000W x 1950H


MGO fresh water chilling unit④ Selection and designing of Fresh water chilling unit

Optimum model of the unit can be selected based on the following conditions.

• Flow rate of the fuel supply pumps and circulating pumps.

• MGO temperature in the service tank.

• MGO temperature to be cooled before entering the circulating pumps orMGO temperature to be cooled before entering the circulating pumps or the engine.

• MGO temperature returned from the engine.MGO temperature returned from the engine.


Advantages of MAYAKAWA’s MGO cooling system2. Very easy and reliable operation

• Utilizing Mayekawa electronic expansion valve system for the fresh water chiller, the outlet fresh water temperature is very precisely controlled and at the same time superheating is controlled fully automatically thus a veryat the same time, superheating is controlled fully automatically, thus a very secured and reliable operation to be accomplished.

• The compressor’s capacity control to be carried out step‐wise according top p y p gthe suction pressure and full automatic controlled EPR is installed on the suction line to maintain the system running at very low heat load. And with a combination of automatic controlled three way control valve installed on the outlet of MGO cooler, the MGO temperature to be finally controlled fully automatically and very accurately.

T id h i i i i d MGO• To avoid heat contraction to main engine, generator engines and MGO piping, the cooling speed of MGO can be freely adjusted and controlledfully automatically.


Shop test result of MGO cooling system

65

Cooling curve at shop testcool down start Cooled down MGO Maintained MGO at +17 C

cool down end

Ref. compressor stop

50

55

60Cooling G/E MGO cooler only Cooling both M/E and G/E MGO

coolers

Cooling for M/E MGO cooler stopped

with cooling load for 3 G/E



40

45

50

C)

1 MGO Inlet, M/E cooler

2 MGO outlet, M/E cooler

2 MGO supply to M/E

4 MGO inlet, G/E cooler

5 MGO outlet, G/E cooler

25

30

35

Tem

pera

ture

( C

6 MGO supply to G/E

7 MGO return

8 Cooling water inlet, chiller

9 Cooling water outlet, chillerMGO return temp. reached at 25 C

15

20

25T reached at 25 C.

5

10Comp. part load (2 cyl.) Comp. full load (6 cyl.) Comp. part load (2 cyl.)


0

10:4

0

10:4

2

10:4

4

10:4

7

10:4

9

10:5

2

10:5

4

10:5

7

10:5

9

11:0

1

11:0

4

11:0

6

11:0

9

11:1

1

11:1

4

11:1

6

11:1

8

11:2

1

11:2

3

11:2

6

11:2

8

11:3

1

11:3

3

11:3

5

11:3

8

11:4

0

11:4

3

11:4

5

11:4

8

11:5

0

11:5

3

11:5

5

11:5

7

12:0

0

12:0

2

12:0

5

12:0

7

12:1

0

12:1

2

12:1

4

Advantages of MAYAKAWA’s MGO cooling system3. Mayekawa’s worldwide service network

• Using our 27 worldwide locations of our branch offices, we can arrange a customer oriented service for the vessels sailing around the world.g


Our contact details

MAYEKAWA MFG. CO., LTD.

Marine DivisionMarine DivisionEcology and Energy Dept.

Address ： 3‐14‐15, Koto‐Ku, Botan, Tokyo, JapanTelephone : +81‐33642‐9211F i il 81 33642 2815Facsimile ： +81‐33642‐2815

Email : [email protected] ： http://www.mayekawa.com

http://www.mayekawa.co.jp


Documents

MGO cooling system [互換モード] · PDF fileto switch to 0.1%‐sulphur‐content marine fuel oil according to Article 4b of ... installed on the outlet of MGO cooler, the MGO