Abstract
The growth of the cruise industry leads to the proliferation of the fleet of cruise ships, but it will increment the atmospheric emission. The International Maritime Organization (IMO) has imposed restriction on the various pollution components of exhausted gases from ships, including carbon dioxide that contributes greatly to the greenhouse effect and is an indicator of energy efficiency for maritime transport. In this paper, ten cruise ships built in 2013–2019 with basic diesel-electric power plants are considered. The schematic diagrams of the alternative combined gas-turbine-electric and diesel-electric power plants applying thermochemical regenerators fed by exhaust gases have been developed for vessels under consideration. Energy efficiency design index for the cruise ships with both the basic and alternative power plants operating on marine fuel oils, liquefied natural gas and syngas has been estimated and compared with the IMO guideline values for this type of vessels. It has been revealed that the application of the thermochemical technologies of waste heat recovery increases the energy efficiency of cruise ships by 15–25%.
