Jifeng ship energy storage

How is the capacity of the storage tank optimized?

The capacity of the storage tank was optimized based on the distribution of the energy demand of the auxiliary systems during the port stays of the ship, evaluated during the 31 months of measurements ( Fig. 5.12 ). From this data, the estimated amount of thermal energy required in port between 200 and 300 GJ.

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.

How does a cryogenic hydrogen storage system work?

Insulation systems for cryogenic hydrogen storage generally employ two primary strategies: active insulation and passive insulation, often combining both for enhanced performance. Active insulation systems consume energy to maintain cryogenic conditions. For LH 2, these systems may re-liquefy hydrogen that has evaporated (boil-off gas).

Can batteries improve the efficiency of a ship's energy system?

However, there are certain auxiliary tasks where batteries can be utilized to improve the overall efficiency of a ship's energy system, even if the batteries capacity is small compared to the total output capacity of the energy system.

Where are marine fuel storage tanks located?

Research comparing the volume required for traditional marine fuels and renewable fuels often makes overly optimistic claims, as it tends to overlook the fact that marine fuel storage tanks are located in wing tanks between the double hull, which do not occupy usable space.

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.