Waste heat recovery system reduces emissions

AVID generator AVID's high-power density generator

A new waste heat recovery system could help ship owners and operators reduce emissions and cut fuel usage and costs.

Fuel savings of up to 8% could be achieved with the system, which converts waste heat from the vessel engine into electricity using the Organic Rankine Cycle (ORC) heat transfer process and a turbo generator power conversion system.

The two-year £3.6m project is being led by AVID Technology and while the heat recovery technology being used is already available, what is new, according to Joe Orrell, managing director of project support company RED Engineering, is AVID's high-power density generator, with turbine design by Enogia, and electronics, which have been redesigned and compactly packaged.

Mr Orrell said: “This draws on technology and expertise developed for the automotive industry, taking costs out and increasing durability. The result is a system with a lower cost per installed kw than anything on the market in a package size that meets the tight constraints of imposed by marine applications.”

The projected 8% fuel saving is based on research by project funder, the Energy Technologies Institute (ETI), however, according to Red Engineering, multiple systems can be connected to generate more power which in turn, would generate a fuel saving that is dependent on how many systems are installed versus on-board engine power.

Red Engineering said there is considerable interest being shown from cruise ship operators, but opportunities are believed to extend to commercial marine vessels.

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