docModern design of Trailing Suction Hopper Dredges
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Modern design of Trailing Suction Hopper Dredges
Modern design of Trailing Suction Hopper Dredges WEDA Dredging Summit & Expo 2014 Erik van der Blom IHC Holland BV Trailing Suction Hopper Dredges From large ... Trailing Suction Hopper Dredges to small ... Trailing Suction Hopper Dredges and in between ... Drivers for R&D Added Customer Value Mission: Increase production Fuel costs Maintenance costs Capital costs Crew costs Sailing Loading Unloading Uptime New markets Sustainability Health & Safety Contents 1. 2. 3. 4. The impact of automation Increase uptime Standardization and modularization Future developments: - LNG - Computational Fluid Dynamics - Ergonomics 5. Conclusions Automation The need for automation... bottom profile Automation The need for automation... Eco Control package Trailspeed Controller • Maintains ship speed at constant level • Constant ship speed essential for steady dredging process • Improves safety, steersman can concentrate on marine traffic Eco Control package Trailspeed Controller • Maintains ship speed at constant level • Constant ship speed essential for steady dredging process • Improves safety, steersman can concentrate on marine traffic Eco Pump Controller • Prevent pump from cavitation • Actively controls pump speed to optimize production and fuel consumption Eco Control package The impact of automation... DCI XX Manual DCI XX Manual DCI XXI TSC + EPC DCI XX Manual DCI XXI TSC + EPC DCI XXI TSC + EPC Increase uptime Added Customer Value Increase production Fuel costs Maintenance costs Capital costs Crew costs Sailing Loading Unloading Uptime improve workability New markets Sustainability Health & Safety Increase uptime Improve workability: • Workability of TSHD often limited by wave climate • Development of DODO software Increase uptime Improve workability: • Workability of TSHD often limited by wave climate • Development of DODO software • Predict workability and determine safe settings • Optimize designs for maximum workability Increase uptime Standardization & modularization Added Customer Value Increase production Fuel costs Maintenance costs Capital costs Crew costs standardization & modularization Sailing Loading Unloading Uptime New markets Sustainability Health & Safety Beagle series • • • • Series of TSHD's with broad operational range Available in hopper volumes of 2000, 4000 and 8000 m3 Integrated design with high level of automation Expand functionality with option packages The smallest in the fleet, the Beagle 2 Easydredge series • • • • Budget range of TSHD's Three types: 1300, 2300 and 3300 m3 Basic design, focussed on sand mining Available 'off the shelf' Future developments Added Customer Value Increase production Fuel costs Maintenance costs Capital costs Crew costs Sailing Loading CFD Unloading Uptime New markets Sustainability Health & Safety LNG ergonomics Fuel and emissions • Fuel costs approx. 25-30% of operational costs • Increasing fuel prices • Upcoming emission regulations (SOx, NOx, EEDI) NOx emissions SOx emissions LNG hopper • LNG reduces gas emissions (SOx by 99%, NOx by 85% compared to HFO) • Solution to comply to IMO TIER 3 emission regulations Computational Fluid Dynamics Hull shape development: • Application of CFD in hydrodynamic design process • Hull shapes optimized for low resistance and optimal manoeuvrability • Develop expertise in shallow water performance Computational Fluid Dynamics • CFD for dredge pump design • Development of 2 phase CFD • Design of new generation dredge components Ergonomics • Ergonomic bridge with optimal viewlines • Design of ergonomic consoles and control chairs • Improves health & safety Conclusions • Intelligent automation reduces variations and disturbances, leading to higher production and lower fuel consumption • Increase uptime by improving workability • New series of TSHD's for shorter lead times and lower capital costs • Continuous focus on R&D to create added customer value and to tackle upcoming challenges Thank you for your attention!
