Analysis of internal gas leaks in an MCFC system package for an LNG-fueled ship

Gilltae Roh, Youngseung Na, Jun Young Park, Hansung Kim

Research output: Contribution to journalArticle

Abstract

The airflow inside the housing of a 300-kW molten carbonate fuel cell (MCFC) system is designed to ensure safety in case of a gas leak by applying computational fluid dynamics (CFD) techniques. In particular, gas accumulating zones are identified to prevent damage to vulnerable components from high temperature and pressure. Furthermore, the location of the alarm unit with the gas-leak detector is recommended for construction of safe MCFC ships. In order to achieve this, a flow-tracking and contour field (for gas, temperature, and pressure) including a fuel-cell stack module, balance-of-plant, and various pipes is developed. With the simulated flow field, temperature flow is interpreted for the heating conditions of each component or pipe in order to find out where the temperature is concentrated inside the fuel cell system, as well as the increase in temperature at the exit. In addition, the gas leakage from the valves is investigated by using a flow simulation to analyze the gas and pressure distribution inside the fuel cell system.

Original languageEnglish
Article number2330
JournalApplied Sciences (Switzerland)
Volume9
Issue number11
DOIs
Publication statusPublished - 2019 Jun 1

Fingerprint

liquefied natural gas
molten carbonate fuel cells
Molten carbonate fuel cells (MCFC)
ships
Liquefied natural gas
Ships
Gases
fuel cells
gases
Fuel cells
gas detectors
warning systems
Temperature
gas temperature
computational fluid dynamics
Pipe
pressure distribution
gas pressure
temperature
safety

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

Cite this

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abstract = "The airflow inside the housing of a 300-kW molten carbonate fuel cell (MCFC) system is designed to ensure safety in case of a gas leak by applying computational fluid dynamics (CFD) techniques. In particular, gas accumulating zones are identified to prevent damage to vulnerable components from high temperature and pressure. Furthermore, the location of the alarm unit with the gas-leak detector is recommended for construction of safe MCFC ships. In order to achieve this, a flow-tracking and contour field (for gas, temperature, and pressure) including a fuel-cell stack module, balance-of-plant, and various pipes is developed. With the simulated flow field, temperature flow is interpreted for the heating conditions of each component or pipe in order to find out where the temperature is concentrated inside the fuel cell system, as well as the increase in temperature at the exit. In addition, the gas leakage from the valves is investigated by using a flow simulation to analyze the gas and pressure distribution inside the fuel cell system.",
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Analysis of internal gas leaks in an MCFC system package for an LNG-fueled ship. / Roh, Gilltae; Na, Youngseung; Park, Jun Young; Kim, Hansung.

In: Applied Sciences (Switzerland), Vol. 9, No. 11, 2330, 01.06.2019.

Research output: Contribution to journalArticle

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