CALCULATION AND TECHNICAL SPESIFICATION OF FUEL OIL SYSTEM PDF

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CALCULATION AND TECHNICAL SPESIFICATION OF FUEL OIL SYSTEM 2 Agus Dwy Bramastha Ir. Dwi Priyanta, MSE Ir. Dwi Priyanta, MSE Rev Date Prepared By Supervised By Approved By Document No. : DOC-06-14-1005-FOS DEPARTMENT OF MARINE ENGINEERING DOUBLE DEGREE PROGRAM INSTITUT TEKNOLOGI SEPULUH NOPEMBER – HO...

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CALCULATION AND TECHNICAL SPESIFICATION OF FUEL OIL SYSTEM

2

Agus Dwy Bramastha

Rev Date Prepared By Document No. : DOC-06-14-1005-FOS

Ir. Dwi Priyanta, MSE Supervised By

Ir. Dwi Priyanta, MSE Approved By

DEPARTMENT OF MARINE ENGINEERING DOUBLE DEGREE PROGRAM INSTITUT TEKNOLOGI SEPULUH NOPEMBER – HOCHSCHULE WISMAR

Calculation and Technical Specification of Fuel Oil System

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TABLE OF CONTENTS 1.

INTRODUCTION ......................................................................................................................................... 3

2.

OBJECTIVES ................................................................................................................................................. 3

3.

REFERENCES ................................................................................................................................................ 3

4.

LIST OF ABBREVIATIONS ........................................................................................................................ 3

5.

DESIGN REQUIRMENTS .......................................................................................................................... 4

6.

SUMMARY OF CALCULATIONS............................................................................................................ 8 6.1 VOLUME OF HFO TANK ........................................................................................................................ 9 6.2 VOLUME OF MDO TANK ...................................................................................................................... 9 6.3 HFO SYSTEM PUMP ................................................................................................................................ 9 6.4 MDO SYSTEM PUMP .............................................................................................................................. 9 6.5 HFO SYSTEM PIPE DIAMETER ........................................................................................................... 10 6.6 MDO SYSTEM PIPE DIAMER .............................................................................................................. 10 6.7 HFO FUEL HEATER ................................................................................................................................. 10 6.8 POWER CONSUMTION OF MAIN ENGINE FUEL OIL SYSTEM .............................................. 10 6.9 POWER CONSUMTION OF AUXILIARY ENGINE FUEL OIL SYSTEM ..................................... 11

ATTACHMENT 1 ................................................................................................................................................. 12 ATTACHMENT 2 ................................................................................................................................................. 13

Table 1. Design parameter for Fuel Oil System ........................................................................................ 4 Table 2. Summary calculation of HFO tank. ............................................................................................. 9 Table 3. Summary calculation of MDO tank volume. ............................................................................. 9 Table 4. Summary calculation of HFO system Pump ............................................................................. 9 Table 5. Summary Calculation of MDO system pump ........................................................................... 9 Table 6. Summary calculation of Pipe Diameter in HFO system. ..................................................... 10 Table 7. Summary calculation of Pipe Diameter in MDO system. ................................................... 10 Table 8. Summary calculation of HFO Fuel Heater ............................................................................... 10 Table 9. Summary calculation of HFO System Power Consumtion. ................................................ 10 Table 10. Summary calculation of MDO System Power Consumtion. ........................................... 11

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Calculation and Technical Specification of Fuel Oil System

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1. INTRODUCTION

Fuel is one of the most important thing in the ship. To make the ship work properly the fuel specification and the engine specification must match. There are 2 main types of fuel that is Marine Distillate Fuel and Marine Residual Fuel. Usually the low speed diesel engine use Residual Fuel like HFO. In this ship the Main Engine use MAN 7S26MC6 engine and the fuel for the Main Engine is RME180. For the Auxiliary Engine use MAN L16/24 and the fuel is MDB.

2. OBJECTIVES 1. To learn about fuel oil system in Main Engine and Auxiliary Engine. 2. To Calculate the fuel consumption for Main Engine and Auxiliary Engine. 3. To calculating the capacity of Storage Tank, Settling Tank, Service Tank . 4. To Calculating the heater requirement for the HFO Fuel Oil System 5. To calculating and determine the specification of Fuel Oil System Pump 6. To determine requirement diameter for fuel oil system.

3. REFERENCES 1. 2. 3. 4.

GL Rules 2015 MAN S26MC6 Project Guide MAN L16/24 GenSet Project Guide CIMAC Recommendation No.9

4. LIST OF ABBREVIATIONS d dH dO T s V t Q Vs H hs hp hv hts htd hf hm

: diameter [mm] : inside diameter [mm] ; outside diameter [mm] : Temperature [°C] : thickness [mm] : Volume [m3] : time [s],[h] : Capacity [m3/h] : flow velocity [m/s] : Head [m], [Mpa], [bar] : head static [m] : head pressure [bar] ; head velocity [m] : total head loss suction side[m] : total head loss discharge side [m] : major head loss [m] : minor head loss [m]

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u : viscosity [m2/s], [cSt] P : Power [kW] ṁ : mass flow [m/s]

5. DESIGN REQUIRMENTS Design requirement for Fuel Oil System arrange in GL 2015 Part I Sec 11 G Fuel Oil System, Project Guide, and CIMAC Recommendation No.9.In the table 1 is the summary

Tank

of the design requirement Fuel Oil System. Table 1. Design parameter for Fuel Oil System Keyword Reference Design Requirement GL I – Part IShut-off devices on fuel oil tanks Chapter 2 Section having a Shut off 11 G.2.2 capacity of less than 500 liters devices need not be provided with remote control. GL I – Part IWhere filling lines are led Chapter 2 Section through the tank top and end Filling Lines 11 G.2.5 below the maximum oil level in the tank, a non-return valve at the tank is to be arranged. Service Tank GL I – Part IOn cargo ships of 500 GT or Chapter 2 11 above and all passenger ships Section G.10.1 two fuel oil service tanks for each type of fuel used on board necessary for propulsion and essential systems are to be provided. Equivalent arrangements may be permitted.

Treatment of Heavy Fuel OIl

GL I – Part IChapter 2 11 Section G.10.2

Each service tank is to have a capacity of at least 8 h at maximum continuous rating of the propulsion plant and normal operation load of the generator plant.

GL I – Part IChapter 2 11 Section G.11.1.1

Heavy fuel oil tanks are to be fitted with a heating system.
The capacity of the tank heating system is to be in accordance with the operating requirements

Remark

8h continuous rating of engine

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Calculation and Technical Specification of Fuel Oil System

Keyword

Pump

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Reference

Design Requirement and the quality of fuel oil intended to be used.

GL I – Part IChapter 2 11 Section G.11.2.1

Heavy fuel settling tanks or equivalent arrangements with sufficiently dimensioned heating systems are to be provided. Settling tanks are to be provided with drains, emptying arrangements and with temperature measuring instruments.

GL I – Part IChapter 2 11 Section G.11.3.4

Daily service tanks are to be provided with drains and with discharge arrangements.

CIMAC Recommendations No.9 Chapter 3 3.1 page 11

During the transfer from the bunker(storage) to the settling tank the temperature should be sufficient high to obtain pumping viscosity and kept at least 10°C above the pour pint. A high temperature is favorable to encourage the settling process, but to high a temperature would promote ageing of the fuel. THE recommended temperature is about 70°C. Fuel transfer, feed and booster pumps are to be designed for the intended operating temperature

Storage tank temperature 10°C above the fuel pour pint. Settling tank temperature 70°C

A fuel transfer pump is to be provided. Other service pumps may be used as back-up pump provided they are suitable for this purpose. At least two means of oil fuel

Minimum 2 fuel transfer pump

CIMAC Recommendations No.9 Chapter 3.2 3.2.1 page 11

Fuel Transfer, Feed, and Transfer Pump

Project

GL I – Part IChapter 2 Section 11 G.4.1

GL I – Part IChapter 2 Section 11 G.4.2

GL I – Part I-

Remark

Minimum 2 5

Calculation and Technical Specification of Fuel Oil System

Keyword

Heater, Filters and Purifier

Capacity and head of the fuel supply Pump Capacity and head of fuel circulating pump

Filter

Purifier

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Reference Chapter 2 Section 11 G.4.3

Design Requirement transfer are to be provided for filling the service tanks. 


GL I – Part IChapter 2 Section 11 G.4.4

Where a feed or booster pump is required to supply fuel to main or auxiliary engines, stand-by 
 pumps are to be provided. Where pumps are attached to the engines, stand-by pumps may be dispensed with for auxiliary engines.

MAN S26MC6 Project Guide page 6.03, 6.04

The recommended capacity and head for supply pump is 0.7 m3/h and 4 bar.

MAN S26MC6 Project Guide page 6.03, 6.04

The recommended capacity and head for supply pump is 2.4 m3/h and 4 bar.

GL I – Part IChapter 2 Section 11 G.7.1

Fuel oil filters are to be fitted in the delivery line of the fuel pumps. 


GL I – Part IChapter 2 Section 11 G.7.8

Fuel transfer units are to be fitted with a simplex filter on the suction side. 


GL I – Part IChapter 2 Section 11 G.8.1

Manufacturers of purifiers for cleaning fuel and lubricating oil are to be approved by GL. 


GL I – Part IChapter 2 Section 11 G.8.3

The sludge tanks of purifiers are to be fitted with a level alarm which ensures that the level in the sludge tank cannot interfere with the operation of the purifier.

Remark fuel transfer pump (feed pump) to the service tank Minimum 2 feed or booster pump.

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Calculation and Technical Specification of Fuel Oil System

Keyword

Pipe and Accessories

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Reference

Design Requirement

GL I – Part IChapter 2 Section 11 G.11.6.1

Two mutually independent end preheaters are to be provided. The arrangement of only one preheater may be approved where it is ensured that the operation with fuel oil which does not need preheating can be temporarily maintained. Daily service tanks are to be provided with drains and with discharge arrangements. Change-over arrangement diesel oil/ heavy oil The change-over arrangement of the fuel supply and return lines is to be so arranged that faulty switching is excluded and to ensure reliable separation of the fuels. G.11.4.1

GL I – Part IChapter 2 Section 11 G.11.7 GL I – Part IChapter 2 Section 11 G.11.7.1

A by-pass with shut-off valve shall be provided.

GL I – Part IChapter 2 Section 11 G.11.7.2

Viscosity regulators are to be fitted with a local temperature indicator.


GL I - Part I Chapter 2 Section 15 G.3.1

Fuel Lines may not pass through tanks containing feed water, drinking water, lubricating oil or thermal oil. Fuel Lines which pass through ballast tanks are to have an increase wall thickness according

Heater

Viscosity Control

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Pipe Layout GL I - Part I Chapter 2 Section 11 G.3.2

Remark

Where main and auxiliary engines are operated on heavy fuel oil, automatic viscosity control is to be provided.

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Calculation and Technical Specification of Fuel Oil System

Keyword

Reference GL I - Part I Chapter 2 Section 11 G.3.4.1

GL I - Part I Chapter 2 Section 11 G.3.4.5

Pipe and Valve Class

Material

Pipe Thickness Pipe Material

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Design Requirement to Table.11.5 Flanged and screwed socket connections in fuel oil lines which lay directly above hot surface or other source of ignition are to be screened and provided with drainage arrangement. Shut off valves in fuel lines in the machinery space are to be operable from above the floor plates.

GL I - Part I Chapter 2 Section 11 G.3.4.7

Fuel Pumps are to be capable of being isolated from piping system by shut-off valve

GL I - Part I Chapter 2 Section 11 G.3.4.8 GL I - Part I Chapter 2 Section 11 Table 11.1 GL I - Part I Chapter 2 Section 11 Table 11.5 GL I – Part I Chapter 2, Section 11 –

For fuel flow meter a by-pass with shut off valve shall be provided Pipe class for Fuel Oil System is Class II, PR≤16 and t≤150 Fuel Lines passing machinery space in the group N Pipe class application

II

for

Remark

Shut-off Valve Remotely operated valve Pump shutoff valve , Remotely operated valve Flow meter ,by pass Class II

Group N

general

6. SUMMARY OF CALCULATIONS In this section will be explained about the summary calculation of Fuel Oil System in the Main Engine and Auxiliary Engine. The main engine use HFO fuel type and Auxiliary Engine use MDO fuel type. For more detail calculation see detail calculation document in the attachment 1.

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Q [m3/h] 9.5 0.8 0.6

H [m] 20 40 60

P [kW] 1.2 0.75 0.75

2.5

60

1.1

6.1 VOLUME OF HFO TANK Table 2. Summary calculation of HFO tank. No Tank Name V Location [m3] [frame] 1 Storage Tank 120 2 Settling Tank 16.99 3 Service Tank 5.7

6.2 VOLUME OF MDO TANK Table 3. Summary calculation of MDO tank volume. No Tank Name V Location [m3] [frame] 1 Storage Tank 51 2 Settling Tank 7.3 3 Service Tank 2.4

6.3 HFO SYSTEM PUMP Table 4. Summary calculation of HFO system Pump No Pump Name Brand Type 1 2 3

Transfer Pump Feed Pump Supply Pump

Iron Pump Alfa Laval Sili Pump

4

Circulation Pump

Sili Pump

ON-V:5 ALP-0015 YCB0.6/0.6 YCB2.5/0.6

6.4 MDO SYSTEM PUMP Table 5. Summary Calculation of MDO system pump No Pump Name Brand Type 1 2 3

Transfer Pump Feed Pump Circulation Pump

Iron Pump Alfa Laval Sili Pump

ON-V:4 ALP-0015 YCB-0.6/0.6

Q [m3/h] 4.5 0.8 0.6

H [m] 20 40 60

P [kW] 0.8 0.8 0.75

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6.5 HFO SYSTEM PIPE DIAMETER Table 6. Summary calculation of Pipe Diameter in HFO system.(ANSI Standard) No Pipe Line Nominal dO dH s Pipe Size [mm] [mm] [mm] Class 1 Fuel Transfer Line 2.5 73 68.78 2.11 II 2 Fuel Feed Line 0.75 26.7 22.48 2.11 II 3 Fuel Supply Line 0.5 21.3 17.08 2.11 II 4 Fuel Circulation Line 1.25 42.2 36.66 2.77 II

6.6 MDO SYSTEM PIPE DIAMER Table 7. Summary calculation of Pipe Diameter in MDO system. .(ANSI Standard) No Pipe Line Nominal dO dH s Pipe Size [mm] [mm] [mm] Class 1 Fuel Transfer Line 1.5 48.3 42.76 2.77 II 2 Fuel Feed Line 0.75 26.7 22.48 2.11 II 3 Fuel Circulation Line 0.5 21.3 17.08 2.11 II

6.7 HFO FUEL HEATER Table 8. Summary calculation of HFO Fuel Heater No Heater Brand Target T [°C] 1 Storage Tank Midcom 50 2 Settling Tank Midcom 70 3 Pre-Heater Alfa Laval 95 4 Service Tank Midcom 115 5 Circulation Heater Alfa Laval 135

ΔT [°C] 25 20 25 20 20

Cal. P [kW} 62.8 40.2 12 26.8 7.1

P [kW] 64.8 43.2 14 32.4 8

6.8 POWER CONSUMTION OF MAIN ENGINE FUEL OIL SYSTEM Table 9. Summary calculation of Power Consumption. of Main Engine FO System No

Item

n

Power [kW] Spec

Eff

Real

Total

1

HFO Transfer Pump

1

1.2

0.95

1.26

1.26

2

HFO Feed Pump

1

0.75

0.95

0.79

0.79 10

Calculation and Technical Specification of Fuel Oil System

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Item

n

3

HFO Circulation Pump

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Power [kW] Spec

Eff

Real

Total

1

1.1

0.95

1.16

1.16

HFO Booster Pump

1

0.75

0.95

0.79

0.79

5

HFO Purifier

1

1.2

0.95

1.26

1.26

6

Storage Tank Heater

2

64.8

0.95

68.21

136.42

7

Settling Tank Heater

2

43.2

0.95

45.47

90.95

8

Service Tank Heater

2

26.8

0.95

28.21

56.42

9

Pre-Heater

1

14

0.95

14.74

14.74

10

Circulation Heater

1

8

0.95

8.42

8.42 312.21

6.9 POWER CONSUMTION OF AUXILIARY ENGINE FUEL OIL SYSTEM Table 10. Summary calculation of Power Consumption. of Auxiliary Engine FO System No

Item

n

Power [kW] Spec

Eff

Real

...