Chiung-Wen Hsu

Functional assessment for large-scale wind-hydrogen energy integration electricity supply system in Taiwan

This study constructs an application scenario of a large-scale wind power and hydrogen energy integrated electricity supply system (LWHIESS) in Taiwan, and conducts a system functional assessment for LWHIESS. This includes an estimation of LWHIESSs effectiveness for increasing the available power and reducing carbon emissions. Assuming that in 2025, Taiwans wind power installed capacity would become 3,000 MW, the results showed that after incorporating electrolyzed hydrogen generation, hydrogen storage and fuel cell equipment into Taiwans wind power system, the useable power would be increased by 5%-7%, and carbon emissions would be decreased by around 240,000 ton annually for the overall power supply system when electrolyzer efficiency, fuel cell power generation efficiency and the power consumption ration for hydrogen generation were high. It also showed that a power supply capacity of 200-220 MW with the installed capacity of onshore wind turbines would be increased after renewing the electric power.

Assessment of Hydrogen Storage Technologies by Using Compromised Weighting Method

The purpose of this study is to establish an assessment model for hydrogen storage technologies and examine its applicability. The model is based on multicriteria decision making (MCDM). Evaluation criteria that conform to government policies are adopted. The model involves the use of criteria weights assigned by experts, and a constrained least-squares method to obtain a compromise set of weights; appropriate hydrogen storage technology options are subsequently determined by using the weights. The model indicates that metal hydride technology is the most appropriate for Taiwan. Therefore, this technology should be given top priority for further development in order to promote industrialization.