A study on a numerical simulation of the leakage and diffusion of hydrogen in a fuel cell ship

Abstract

Highlights• The safety of hydrogen fuel cell ship is researched by a CFD simulation.• The corners of fuel cell cabins are the areas with a higher concentration of hydrogen.• Reasonable ventilation is the most effective solution to hydrogen safety in cabin. AbstractA hydrogen fuel cell has many advantages, such as no pollution, high efficiency, low noise and continuous operation. Therefore, it has the potential to be widely applied in both the power propulsion and power supply of a ship. However, the consequent hydrogen safety and leakage issues have attracted much attention and become key issues that need to be resolved urgently. In this paper, based on the component transportation and chemical reaction modules in Fluent software, a ferry is selected as the research object, and a diffusion model of the high pressure hydrogen leakage in a Corresponding author. Yupeng Yuan cabin is established. The hydrogen concentration distributions at different leakage positions after the leakage occurs are obtained by making transient numerical calculations of the hydrogen leakage diffusion at the corresponding leakage positions in the cabin. At the same time, the effects of different ventilation conditions on the diffusion trend of hydrogen are analyzed. The simulationresults have ascertained the optimal positions for hydrogen sensors and ventilations and it is hoped that these results can provide guidance for the design of a fuel cell ship that uses high pressure gaseous hydrogen.

Analysis of a Main Cabin Ventilation System in a Jack-Up Offshore Platform Part I: Numerical Modelling

“…The dimensions of the 3D model were 18.8 × 18.3 × 7.7 m in length, width, and height. The total volume of the cabin was 2003.26 m 3 . In order to make the boundary conditions of the cabin model more realistic, reverse engineering was adopted to establish the 3D model.…”

“…The main cabins in offshore platforms are very different from ordinary ship cabins or building rooms [1,2]. The uniqueness of the main cabins in offshore platforms is found in the presence of a set of mechanical equipment such as main engines, pumps, boilers, and heat exchangers in the cabins [3]. Oxygen is essential for both the cabin personnel and power machineries.…”

An amperometric H2 gas sensor based on ionic liquid for hydrogen fuel cell ships

“…solar energy and wind energy), hydrogen fuel cell also has characteristic of high energy density, high stability and high tolerance to environmental factors. Hence, it possesses great application potentials on ships [1][2][3][4].…”

“…H 2 has a wide inflammable range (4-75%), a large diffusion coefficient (0.61 m 2 /s), high combustion velocity and low ignition temperature (560 o C) [4,5]. Moreover, H 2 is a colourless and tasteless inflammable gas and it cannot be detected by sense organs of human.…”

Tracking Control for Hydrogen Fuel Cell Systems in Zero-Emission Ferry Ships

“…ere have been very few successful implementations of FCs for vehicles [7] and marine applications [9,11,12] in the past few years. Most of the existing results for the FCs use linearized representation and controllers [13].…”