Elproduktion med ORC-teknik ombord på fartygsserien MK II.
Given that the oil prices have risen and the environmental regulations has become more stringent, the interest in operating efficiency has increased. The project has investigated the possibility of producing electricity from waste heat generated in the diesel process. One technique to utilize and convert energy into electricity is the ORC (Organic Rankine Cycle). This process is based on the Rankine process (the steam process), the difference from the traditional Rankine process is that instead of water as a working medium, an organic substance is used. The main component used in the process is a evaporator, a turbine, a condenser and a pump. Opcon is a company that markets a product based on the ORC technology, called the Powerbox. During autumn 2011 and spring 2012, a feasibility study commissioned by Stena RoRo to investigate whether the Powerbox is suitable for Stenas RoRo ship series Mk II for electricity generation, in terms of economic viability and proper placement on the basis of the necessary peripherals. The survey shows that the Powerbox can be placed on the ship series Mk II. Stena has stated that this investment should have a pay-back time in three years. The Powerbox will be paid off after eight years.