Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved.
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1 MGO COOLING SYSTEM MAYEKAWA MFG. CO., LTD. Marine Division Ecology and Energy Dept. Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved.
2 Current regulation : New sulphur limits in marine fuel 1. Sulphur control for international shipping 1.1 Revised IMO MARPOL Annex VI 2008 SOx, PM, Fuel Regulations Regulation 14 Sulphur Oxides (SOx) and Particulate Matter (PM) The sulphur content of any fuel oil used globally shall not exceed: 4.5% m/m S, prior to 1 January % m/m S, on and after 1 January % 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 %m/m S, on and after 1 July % m/m S, on and after 1 January 2015 Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 2
3 Current regulation : New sulphur limits in marine fuel 1.2 California Air Resources Board (CARB): 17 CCR, section , 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 Phase Ⅱ Jan. 1, 2012 Marine gas oil (DMA) or marine diesel oil (DMB) At or below 0.1% sulfur Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 3
4 Current regulation : New sulphur limits in marine fuel 1.3 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. 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, heated 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 Global cap 4.5 (3.5)% S, Heavy Fuel Oil, heated At Berth 0.1% S, Low Sulphur Distillate Oil, unheated or cooled Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 4
5 Surfaced problem Ship s machineries are not designed to use with low sulphur fuel of which the viscosity is very low, so their performance or lubrication, etc. are affected and deteriorated. Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 5
6 Solution By 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. Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 6
7 Location of MGO cooling system Our standard MGO cooling system needs to be installed before the circulating pumps. Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 7
8 Mayekawa MGO cooling system Indirect coolingsystem between fresh water and marine fuel (MGO) MGO COOLER M/E FRESH WATER CHILLING UNIT MGO G/E CIRCULATION PUMP CHILLED FRESH WATER CONDENSER COOLING WATER MGO Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 8
9 Mayekawa MGO cooling system The system consists of fresh water chilling unit, fresh water circulation pump, fresh water head tank and MGOcoolers coolers. And MGO to be cooled to the specific temperature being heat exchanged by chilled fresh water. Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 9
10 Advantages of MAYAKAWA s MGO cooling system 1. 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, ourunitsunits 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. Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved.
11 MGO fresh water chilling unit 1 Fresh water condenser type (MMCS35F) Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 11
12 MGO fresh water chilling unit 2 Sea water condenser type (MMCS35S) Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved.
13 MGO fresh water chilling unit 3 Dimension of standard units (Fresh water condenser) Model El. Motor Dimension of unit MMCF20F 22 HP 1000L x 1000W x 1950H MMCF25F 25 HP 1000L x 1000W x 1950H MMCF30F 30 HP 1000L x 1000W x 1950H MMCF35F 35 HP 1000L x 1000W x 1950H MMCF40F 40 HP 1000L x 1000W x 1950H Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 13
14 MGO fresh water chilling unit 4 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 or the engine. MGOtemperature returned fromtheengine. engine. Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 14
15 Advantages of MAYAKAWA s MGO cooling system 2. 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 sametime time, superheating iscontrolled fully automatically, thus a very secured and reliable operation to be accomplished. The compressor s capacity control to be carried out step wise according to the 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. To avoid heat contraction to main engine, generator engines and MGO piping, the cooling speed of MGO can be freely adjusted and controlled fully automatically. Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 15
16 65 60 cool down Shop test result of MGO cooling system Cooling curve at shop test cool down start Cooled down MGO end Maintained MGO at +17 C Cooling both M/E and G/E MGO coolers Cooling for M/E MGO cooler stopped Cooling G/E MGO cooler only Ref. compressor stop 55 with cooling load for 3 G/E with cooling load for 2 G/E with cooling load for 1 G/E Temperature ( C) MGO return temp. reached at 25 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 6 MGO supply to G/E 7 MGO return 8 Cooling water inlet, chiller 9 Cooling water outlet, chiller Comp. part load (2 cyl.) Comp. full load (6 cyl.) Comp. part load (2 cyl.) :40 10:42 10:44 10:47 10:49 10:52 10:54 10:57 10:59 11:01 11:04 11:06 11:09 11:11 11:14 11:16 11:18 11:21 11:23 11:26 11:28 11:31 11:33 11:35 11:38 11:40 11:43 11:45 11:48 11:50 11:53 11:55 11:57 12:00 12:02 12:05 12:07 12:10 12:12 12:14 Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 16
17 Advantages of MAYAKAWA s MGO cooling system 3. 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. Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 17
18 MAYEKAWA MFG. CO., LTD. Marine Division Ecology and Energy Dept. Our contact details Address : , Koto Ku, Botan, Tokyo, Japan Telephone : Facsimile il : [email protected] Web : Copyright 2012 Mayekawa Mfg. Co.,Ltd. All Rights Reserved. 18
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