With business activities spread across the globe, protecting the global environment is included as one of MOL's top priorities, alongside safe operation, in the MOL Group Corporate Principles. The Senpaku ISHIN project, our concept for next-generation vessels, is a ground breaking initiative that helps protect the environment in a substantive way by reducing CO2 emissions using feasible technologies. This report profiles one of the results of the ISHIN-I project, a hybrid car carrier that was delivered in June 2012, as well as progress on core component technologies for the Senpaku ISHIN series.
Hybrid Car Carrier Emerald Ace Is Delivered
Hybrid Power Supply System for Realizing Zero Emissions While at Berth
The Emerald Ace hybrid car carrier is equipped with a hybrid power supply system that combines a solar power generation system with lithium-ion batteries. Conventional power generation systems use diesel power generators to supply power to the ship while at berth, but the Emerald Ace is equipped with lithium-ion batteries that are charged by solar power generation systems while at sea. The ship then uses this power while at berth, which allows the diesel power generators to be completely shut off. The result is "zero emissions while at berth."
The solar panels installed on the deck of the vessel are doublesided glass panels that boast outstanding durability in terms of resistance to salt damage and wind pressure, for example. The solar panels generate 160 kW of electricity (there are 768 panels (210 W) covering an area of 1,079 m²), the most of any vessel in the world.
Power is generated while at sea
The system employs lithium-ion batteries with outstanding energy density for storing electricity generated by the solar panels in a restricted space aboard the vessel. The vessel uses 320,000 batteries, which are also used in PCs and other applications, to store some 2.2 MWh of electricity (which is the equivalent of the electricity consumed by 200 ordinary homes). What's more, the high-performance power management system efficiently controls the power with top priority afforded to safety.
Power is used while berthed
Ferry that Uses LNG as Fuel
- Use of LNG as fuel: By using liquefied natural gas (LNG) as fuel, the vessel has cleaner exhaust gases and greatly reduces CO2 emissions.
- Use of shore power supply system: While in port and at berth, the ship uses electricity supplied from shore and rechargeable batteries to achieve zero emissions
- Emphasis on comfort
- CO2reduction: 50%
To make practical use of LNG fuel a reality at an early date, MOL has decided to conduct a gas injection demonstration using an electronically controlled slow-speed diesel engine for new ships in partnership with Mitsui Engineering & Shipbuilding Co., Ltd. This demonstration will help us assess the maritime application of LNG fuel- elated technologies.
Gas-injection Electronically Controlled Slow-Speed Diesel Engine
This engine combines the latest electronic control technology with gas-injection slow-speed diesel engine technology that can burn heavy fuel oil, which has been used in ocean-going vessels, and environmentally- friendly natural gas.
Very Large Ore Carrier with High-efficiency Waste Heat Energy Recovery System
- Waste heat energy recovery to assist propulsion
- Employs technologies to reduce CO2 emissions even at low speeds, as well as during normal operation
- CO2 reduction: 30%
The main feature is use of waste heat energy to assist propulsion via auxiliary motors. The waste heat energy is recovered from the main engine and used to generate electricity at high rates of efficiency and power auxiliary motors. These technologies are scheduled to be integrated into actual vessels, a very large iron ore carrier scheduled for delivery in 2013 and a Cape-size bulker slated for delivery in 2014.