Squeezing in the LNG

Transcription

1 Squeezing in the LNG

2 Agenda today I. Deltamarin II. The design problem III. Solution or solutions? IV. Conclusions 2

3 Deltamarin > Small but big > Finnish and international > Engineering company and building company > Long traditions vs. top of the line R&D on latest trends 3

4 LNG is easy for the ship designer, or is it? 4

5 Fuel Properties Comparison Density (kg/l) Boiling Point (C), 1 bar Diesel LNG LPG DME Methanol Ethanol Flash Point 60 < Auto Ingition (C) Viscosity cst at 20 C Cetane No LHV (MJ/kg) Energy density (GJ/m3) ,5 Ref (100 %) 21,6 59 % 25,3 69 % 19,2 52 % 15,8 43 % 21,3 58 % & JOH

6 Regulations 6

7 The power solution Autonomy provided by the tanks? 7

8 Digging out solutions 8

9 Summary of the study > Aim: Maximum autonomy for LNG as primary fuel Payload and main dimensions to be preserved compared to a traditionally fuelled ship arrangement > Totally 13 different tank and lay-out combinations were studied 9 lay-outs were studied for a smaller passenger ferry 2 lay-outs for a larger passenger ferry 2 lay-outs for a larger cruise vessel/ferry 9

10 Typical tank types Spherical tank Cylindrical tank Bilobe tank Prismatic tank Membrane tank 10

11 Rules and regulations B/5 B/15 Collision BHKD 11

12 Alt. 6 Aft on Open Deck + Easier solution from gas ventilation and bunkering point of view AUTONOMY 4.5 DAYS Reducing public passenger areas and/or vehicle capacity Higher VCG may need a wider beam for required stability Aft concentrated LCG may have e negative impact on hull performance (?) Negative impact on safety from mechanical damage point of view & PKO

13 Alt. 5 Vertical tank installation AUTONOMY 2.3 DAYS FERRIES (SMALL SIZE) Reducing vehicle pay load as the required center casing (IGF B/5 requirement) is reducing lane meters more than a side casing Reducing passenger areas Relatively small LNG capacity due to small diameter of the cylindrical tank, despite its great length Higher VCG => Stability may need to be recovered by a wider beam CRUISE SHIPS + Vertically located cylindrical tanks may be a potential solution for cruise ships with AHU units arranged in rooms at center areas of the ship, at multiple decks. + The a.m. Center AC Casing solution is to the benefit of arranging space demanding cruise ship systems and spaces at lower decks, such as potable water post treatment plants, laundries + Repair or renewal of tanks by removing the tanks by lifting upwards through the funnel + Simplified internal ventilation arrangements Higher VCG may require increased main dimensions due to stability reasons. & PKO

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15 Questions? 15

16 Successful References with Satisfied Customers 16

17 Successful References with Satisfied Customers 17

18 Successful References with Satisfied Customers 18

19 Successful References with Satisfied Customers 19

20 Successful References with Satisfied Customers 20

21 Successful References with Satisfied Customers 21

22 Successful References with Satisfied Customers 22

23 Successful References with Satisfied Customers 23

24 Successful References with Satisfied Customers 24

25 Successful References with Satisfied Customers 25

26 Successful References with Satisfied Customers 26

27 Successful References with Satisfied Customers 27

28 Successful References with Satisfied Customers 28

29 Successful References with Satisfied Customers 29

30 Successful References with Satisfied Customers 30

31 Thank you for your attention! For further details please contact: Päivi Haikkola, Manager, R&D Tel