Press release: Wärtsilä and MHI work on new waste heat recovery/power take off/in system
Press Release: Helsinki-listed technology group Wärtsilä and Japan’s Mitsubishi Heavy Industries have signed a Memorandum of Understanding regarding the commercial marketing of a new energy solution for ships. The solution combines innovative technologies from both companies to produce greater power generation capacity and higher propeller propulsion for marine vessels.
By integrating MHI-MME’s waste heat recovery system and energy saving power generation system with Wärtsilä’s operational control technology for shaft generator systems, the new solution results in more energy efficient ship navigation and an improved Energy Efficiency Design Index.
A notable innovation is the combining of a power take off/take in (PTO/PTI) shaft generator system with the WHRS to improve the stability of the WHRS. Depending on the load of the main engine and the ship’s network, the WHRS sometimes produces electrical energy in excess of that needed by the network. Such energy can be utilised via the PTO/PTI generator and at full load, the surplus energy can be used to assist the ship’s drive by being applied directly to the propeller shaft. At low main engine load, the WHRS can be operated in parallel with a diesel generator set. Parallel operation with a shaft generator via PTO operation is also easily implemented.