Energy consumption

Control (management)

Process (computing)

Engineering

Efficient energy use

Materials science

Cascade

Fuel cells

Joule (programming language)

Operating system

Computer science

Chemical engineering

Hydrogen storage

Mechanical engineering

Thermodynamics

Hydrogen

Physics

Nuclear engineering

Organic chemistry

Cylinder

Internal pressure

Automotive engineering

Artificial intelligence

Hydrogen fuel

Composite material

Chemistry

Compressed hydrogen

Joule–Thomson effect

Control theory (sociology)

Mechanics

Electrical engineering

Journal of Energy Storage

Due to the rapid compression of hydrogen and the Joule-Thompson effect specific to hydrogen during the fast filling process, the internal temperature of the cylinder rises sharply which may lead to hidden safety hazards. In this study, a high-pressure hydrogen filling process is considered, and a simple mathematical model of a cascade storage system of a hydrogen refilling station is developed to analyze the temperature rise in hydrogen cylinders under different working conditions. The results show the pressure switching coefficient has a great impact on the filling time, and the pre-cooling of hydrogen has a significant impact on the temperature rise and the states of charge (SOC) within cylinder. Herein, a multi-objective iterative optimization algorithm is proposed to calculate the above two controllable variables (pressure switching coefficient, pre-cooling temperature of hydrogen) with the objectives of faster refueling, lower energy consumption and higher SOC within cylinders in cascade hydrogen refueling. Besides, this method could significantly decrease energy consumption, improve SOC and allow acceptable refueling time.

Modeling and optimal control of fast filling process of hydrogen to fuel cell vehicle