Investigation of Novel Solutions to Integrate Organic Rankine Cycle Power Systems on Ships

Abstract

[ES] Diferentes configuraciones a la hora de integrar un sistema ORC en un barco serán estudiadas conjunto a la producción de vapor mediante un HRSG. Su comportamiento variando parámetros como la presión de entrada, el tipo de fluido orgánico o la cantidad de vapor requerido será investigado en este TFG.

[EN] Emissions in engines is one of the main concern in terms of pollutant investigation nowadays as well as to reduce fuel consumption. Two-stroke diesel engines is a frequent propulsion system used in ships. They are characterized by a high efficiency due to their high compression ratio, however, half of the energy generated by the fuel is dissipated as heat. To harvest this heat loss, the Organic Rankine Cycle, ORC, fits the requirement as it is characterized by its ability to harvest heat from low-temperature sources.

This project define three different configurations using five different working fluids where the ORC is used as a heat recovery system in a vessel. The steam generation by means of using a HRSG and how it affects to the system will be studied too. A technological overview of the ORC and their different components will be described briefly in the first part of the project. The results showed that ORC system can generate up to 2 MW for some configurations. Moreover, the configuration were modelled to keep a pinch point of 15 K to increase the efficiency of the ORC unit.