Waste to Energy Onboard Cruise Ships: A New Paradigm for Sustainable Cruising

Abstract

The newest cruise ships can guest a constantly increasing number of passengers and concentrate their environmental impact on the limited areas interested by their path. The generated solid waste contributes significantly to this impact; therefore, we propose an innovative solution for recovering embedded energy from that garbage. In more detail, we study the feasibility of an absorption plant able to exploit the residual energy of the flue gas of the ship’s incinerator. No payload space shall be sacrificed to install the considered absorption plant. Furthermore, it can be integrated with the existing plants providing for a limited number of heat exchangers. The recovered energy can be used to control the temperature of the refrigerated storerooms; operating simultaneously with, or in place of the existing compression vapors system already installed; it allows a reduction of the CO2 emissions and of fuel consumption. We show that the proposed approach can be applied to a variety of cruise ships, independently of their tonnage or passenger capacity.

Cruising Under and Post the COVID Pandemic: Toward Realization of the United Nations’ Sustainable Development Goals

“…The circular economy, onboard recycling practices (e.g., using recycled materials, waste reduction and treatment), energy-saving technologies, operational efficiency systems, and innovative solutions to recover and reuse energy on board, therefore reduce fuel consumption and emissions (UN SDG #12) and are increasingly utilized by the cruise sector [11,47].…”