Case Study | Azbil and CHEMCAD - Datacor, Inc.

Pressure control, BOG management, and fuel planning. Validated in simulation. Proven at sea. 

Managing LNG tank pressure on a vessel isn't a steady-state problem. Heat transfer, engine load changes, bunkering operations, and long ocean passages all interact in ways that steady-state calculations simply can't capture.

Azbil partnered with Datacor to develop a dynamic digital twin of their LNG fuel tank and fuel gas supply system using CHEMCAD. The result: a cloud-deployed simulation integrated with the vessel's Sea-Navi® 2.0 system that delivered real-time predictions and operational guidance throughout the voyage.

What the case study covers:

• How the digital twin accurately reproduced measured tank pressure and liquid volume during both isolated conditions and active bunkering operations
• The modeling approach for non-equilibrium vapor-liquid behavior, ambient heat transfer, and BOG generation
• Voyage simulation results across a 65-day Singapore-Australia-Japan route
• How operators used the tool to evaluate pressure margins, spray requirements, and fuel availability before and during navigation