College

College of Engineering and Polymer Science

Date of Last Revision

2022-05-11 08:48:07

Major

Chemical Engineering

Honors Course

4200 497 Honors Research

Number of Credits

2

Degree Name

Bachelor of Science

Date of Expected Graduation

Spring 2022

Abstract

The potential of using liquid hydrogen for propulsion is often undermined due to its perilous nature. Hydrogen has a wide flammability range when mixed with air (4.0 - 75.0% hydrogen) and a low ignition energy (0.019 mJ). Liquid hydrogen adds to this high risk as a cryogenic fluid that is to be maintained below -22 K. A liquid hydrogen model has been created in MATLAB that can model various spill scenarios from cryogenic liquid hydrogen vessels. This model takes into consideration the spill rate, spill temperature, air temperature, duration of spill, and air flow conditions to calculate the mass accumulation, pool temperature, pool radius, pool height, and evaporation rate over time. The model can also predict a safe radius for users to abide by if a spill is occurring. This model is verified through an in-depth analysis of each variable and comparison to known trends of cryogenic liquid spills and leaks. The liquid hydrogen safety model can be used with standard operating procedures for hydrogen liquefaction systems to ensure safe practices. This model provides safety advantages to better prepare those operating hydrogen liquefaction systems and vessels that are used in line with hydrogen fuel cells and other hydrogen technologies.

Research Sponsor

Luke Held

First Reader

Dr. Chelsea Monty-Bromer

Second Reader

Dr. Jie Zheng

Honors Faculty Advisor

Dr. Edward Evans

Proprietary and/or Confidential Information

No

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