China luxembourg city ship energy storage

How does energy storage work?

Energy storage, both in its electric and thermal forms, can be used both to transfer energy from shore to the ship (thus working similarly to a fuel) or to allow a better management of the onboard machinery and energy flows. This chapter is made of two main parts.

Can thermal energy storage be used on ships?

Implementation of thermal energy storage on ships Thermal energy storage technologies have been applied in many other fields, where balancing of mismatch between energy production and demand is required.

Which energy sources are infeasible for shipping?

Based on the figure, it is evident that batteries and hydrogen are infeasible as the primary energy sources for the majority of shipping. Most of the potential alternative fuels occupy the middle region of the graph, just below 20 MJ/l. Figure 5.1. Comparison of volumetric energy densities and fuel tank sizes of emerging fuels and NMC batteries.

What is thermochemical energy storage?

Thermo-chemical energy storage is based on chemical reactions with high energy involved in the process. The products of the reaction are separately stored, and the heat stored is retrieved when the reverse reaction takes place. Therefore, only reversible reactions can be used for thermo-chemical storage processes.

Why do ship fuels have a high volumetric energy density?

One of the most important properties of ship fuels is their volumetric energy density. A higher volumetric energy density allows a ship to operate longer without bunkering and thus generate more profits. Fig. 5.1 demonstrates this energy density for a variety of selected fuels.

Are lithium-ion batteries a viable energy source for ferries?

Lithium-ion batteries have been recently installed onboard smaller scale ferries and passenger vessels either as the primary energy source, or then as a hybrid solution. Various lithium-ion battery chemistries are available, with sources pointing at lithium nickel manganese cobalt oxide as the most feasible solution for ships.