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![Introduction Vessel analysis Heat recovery
technologies
System analysis &
results
Conclusion &
recommendations
Research
6
Propulsion and electrical generation systems
Propulsion
Engine
3516-C
1864 kW @ 1600RPM
G
B
G
B
G
86 ekW
DE
93 bkW
G
86 ekW
DE
93 bkW
[440V,60Hz]SwitchBoard
Hotel load
Propulsion
Engine
3516-C
1864 kW @ 1600RPM
Introduction](https://image.slidesharecdn.com/370dc321-cbb1-4e23-93bf-8523035d90fe-151230133621/75/Friday-presentation-6-2048.jpg)
Friday presentation
- 1. Research Energy optimization of ASD-2810 throughHeat Recovery By Aadhaar Sharma 1 Damen Research and Development department
- 2. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Contents Introduction Vessel analysis Heat recovery technologies System analysis & results Conclusion & recommendations 2
- 3. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Typical Energy flow on Direct Propulsion vessel 3 100% 95% 38% 37% 17% 20% 13% 13% 31% 1% 3% 2% 2% ~0% 5% Waste heat 57% Introduction
- 4. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Nodes of improvement Propeller efficiency • Propellers already operating close to theoretical efficiency Drive train efficiency • Frictional or electrical losses. Engine efficiency • Conversion efficiency (no significant improvements in recent history) • Heat recovery 4 40±5 % 97% to 98% 45±5 % Introduction
- 5. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Case study: ASD 2810 • 28 mLength • 10 mBeam • 13.6 knotsSpeed • 56 ton astern/ 60 ton aheadBollard pull 5 Introduction
- 6. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research 6 Propulsion and electrical generation systems Propulsion Engine 3516-C 1864 kW @ 1600RPM G B G B G 86 ekW DE 93 bkW G 86 ekW DE 93 bkW [440V,60Hz]SwitchBoard Hotel load Propulsion Engine 3516-C 1864 kW @ 1600RPM Introduction
- 7. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Energy demand analysis of ASD-2810 Type of demand Installed capacity Average usage Heating: All the heating demands can be fulfilled by water supply at 70oC. 81.54 kW 3.15 kW during summers, 12.45 kW during winter, 30.45 kW during winter while docking. Cooling: Space cooling demands can be fulfilled by 10oC cooling fluid. 54 kW 21.6 kW during summers, 0 kW during winters. Electrical loads 142.41 kW (This includes several components which are rarely used during the year) 30.95 kW during summers, 20.55 kW during winters. Freshwater generation None None 7 Vessel analysis
- 8. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Diesel factor 8 Type of demand Diesel Factor Heating 2.63 (electrical) 1.11 (oil heater) Cooling 0.877 (For COP=3) 0.75 (For COP=3.5) Electrical loads 2.63 Loads met by heat recovery 0 Energy from fuel: 100J Energy from diesel engine: 40J Energy from generator: 38J Energy to Consumer: 38J η=40% η=95% η~100% Diesel Factor =100J / 38J =2.63 Vessel analysis
- 9. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Demand profile assumption 9 Summertime fuel consumption(in kW) Wintertime fuel consumption(in kW) • The profile is assumed to be constant, except in cases of shore connection mode. • In reality there are big fluctuations, but over short time periods. • But for total fuel consumption calculation, the short period fluctuations can be neglected Electric consumption Heating consumption Cooling consumption Fuel consumption profile over 13 days Vessel analysis 120 GJ 134.6 GJ
- 10. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Waste heat supply from engine Three sources of waste heat: • LT circuit • HT circuit • Exhaust gases 10 Vessel analysis
- 11. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research 11 Ship logs: for 13 days
- 12. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Profile of waste heat supply 12 Vessel analysis Engine specs Engine power logs Engine speed logs LT waste heat supply (in kW). Avg=8.38kW HT waste heat supply (in kW). Avg=66.11kW Exhaust waste heat supply (in kW). Avg=86.21kW
- 13. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research 13 To summarize… Vessel analysis Electric consumption Heating consumption Cooling consumption Summer(kW) Winter(kW) 3.15 12.45/ 30.45 21.6 0 30.95 20.55 ? Average LT waste heat supply:8.38kW Average HT waste heat supply: 66.11kW Average exhaust waste heat supply : 86.21kW Supply Demand
- 14. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research For heat supply Heat supply Direct circulation Heat pump Oil burner 14 Heat recovery technologies
- 15. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research 15 For cooling supply Cooling supply Sorption systems Liquid sorption (absorption) Solid sorption (adsorption) Vapour compression Heat recovery technologies
- 16. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research 16 For freshwater supply Freshwater supply Reverse osmosis Evaporation based Coil evaporators Flash evaporators Heat recovery technologies
- 17. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research 17 For electric supply Electric supply Rankine cycle With turbine With piston expander Kalina Cycle Organic Rankine cycle High temperature ORC Low temperature ORC Heat recovery technologies
- 18. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Storage technologies Storage Electrical storage Lithium-ion Lead acid Heat storage Sensible storage Latent storage Thermo-chemical storage 18
- 19. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Killer demands on technologies Demand Description Victims Seaworthiness Ship oscillations Ship accelerations Sea-salt aerosol corrosion Absorption/ liquid sorption cooling Heat source temperature Heat source temperature required cannot be more than 200oC Turbine based Rankine cycle; Kalina cycle Continuous supply The supply from the system must not be intermittent (especially for electric supply) Sensible heat storage Availability of technology Technology should be at least in advanced stage of research and experimentation. Thermochemical heat storage 19 Heat recovery technologies
- 20. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Heat recovery schemes • The aforementioned components can be arranged to form a heat recovery scheme. • A standard scheme has 5 sub-systems connected by heat, cold or electric supply. 20 Suppliers • LT cooling • HT cooling • Exhaust • Generator • Seawater Supply storage • 80oC heat storage • 175oC heat storage Conversion • Heat to electricity • Heat to cooling • Heat upgradation Consumption storage • Heat storage • Cold storage • Electric storage (Battery) Consumers • Space heating • Space cooling • Freshwater generation • Electrical loads System analysis & results
- 21. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Example of a scheme 21 Electrical conversion of waste heat via heat storage System analysis & results
- 22. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Its analysis 22 System analysis & results
- 23. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Fuel savings comparison 23 Wintertime saving (%) Base consumption: 135 GJ Summertime saving (%) Base consumption: 120 GJ System analysis & results 0.00% 10.00% 20.00% 30.00% 40.00% 50.00% 60.00% HT only HT + Exhaust HT only HT + Exhaust HT only HT + Exhaust ORC low ORC high ORC low ORC high ORC low ORC high HT only HT + Exhaust HT only HT + Exhaust Without storage With perfect storage With 1GJ storage Without storage With 0.5 GJ electrical Storage With 2 GJ heat storage Without storage With storage With 2GJ Heat Storage With 1.5GJ Cold Storage No Heat Recovery Direct heating Ulmatec Solution ORC Heat Pump Adsorption
- 24. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Fuels savings in Dollars We consider the low heating value of Diesel and the current diesel prices. Following are the annual running costs of the hotel load: 24 System analysis & results Wintertime saving($)Summertime saving($) $0.00 $5,000.00 $10,000.00 $15,000.00 $20,000.00 $25,000.00 $30,000.00 HT only HT + Exhaust HT only HT + Exhaust HT only HT + Exhaust ORC low ORC high ORC low ORC high ORC low ORC high HT only HT + Exhaust HT only HT + Exhaust Without storage With perfect storage With 1GJ storage Without storage With 0.5 GJ electrical Storage With 2 GJ heat storage Without storage With storage With 2GJ Heat Storage With 1.5GJ Cold Storage No Heat Recovery Direct heating Ulmatec Solution ORC Heat Pump Adsorption
- 25. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research • Storage systems are essential. • Space heating from waste heat recovery is very lucrative. • Adsorption system running on heat storage saves the most fuel. 25 Conclusions Conclusions & recommendations
- 26. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research • Real time hotel load data should be logged in the future, for better analysis. • Storage systems were modelled as lossless. Losses should be included. • Special constraints of systems must be modeled in the analysis. 26 Recommendations
- 27. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research Recommendation: Heat recovery tool 27 The final list of heat recovery components in use Component activation dependent on previous choices Capacity of storage to be filled by the user Circuits involved in heat recovery can be chosen The consumption details displayed according to season Conclusions & recommendations
- 28.
- 29. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research 29 Sample run
- 30. Introduction Vessel analysisHeat recovery technologies System analysis & results Conclusion & recommendations Research 30 Its outcome