(516c) Renewable Energy-Based Hydrogen Production and Utilization Process Simulation and Energy Efficiency Optimization

New renewable energy-based hydrogen production process is needed instead of fossil fuel-based hydrogen production process that emits greenhouse gases that cause climate change worldwide. Competitiveness should be confirmed by comparing greenhouse gas emissions and hydrogen production costs of renewable energy-based hydrogen production processes by comparing greenhouse gas emissions and hydrogen production costs in hydrogen production of existing hydrogen production processes. In addition, various mathematical programming methods should be used to optimize annual costs under process constraints. Through this, technical feasibility review and economic evaluation of renewable energy-based hydrogen production and utilization process are needed.

In this study, we simulated renewable energy-based hydrogen production processes such as electrolysis. Through this, key design variables were derived from the relevant process model and the correlation between various components of the process and the performance and efficiency was analyzed through sensitivity analysis. Based on the results obtained through this study, we analyzed the effects of major factors on the hydrogen production cost of the renewable energy-based hydrogen production process. In addition, we analyzed the process system using hydrogen produced by applying hydrogen pinch analysis and designed the optimal hydrogen pinch network by evaluating various combinations of hydrogen source and sink.

This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (No. 2019R1A2C2002263).