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Development of a new ammonia‐based energy storage option for grid balancing
Author(s) -
Siddiqui Osamah,
Dincer Ibrahim
Publication year - 2020
Publication title -
energy storage
Language(s) - English
Resource type - Journals
ISSN - 2578-4862
DOI - 10.1002/est2.145
Subject(s) - ammonia production , energy storage , process engineering , ammonia , exergy efficiency , environmental science , proton exchange membrane fuel cell , electrolysis , efficient energy use , exergy , waste management , nuclear engineering , fuel cells , power (physics) , chemistry , chemical engineering , thermodynamics , engineering , electrical engineering , electrode , physics , organic chemistry , electrolyte
Abstract In the present study, a new ammonia‐based system is developed and investigated as an energy storage option. In this regard, an environmentally benign cyclic synthesis and usage of ammonia is proposed. The proton exchange membrane‐based electrolysis is used for hydrogen generation with cyclic water usage and production. A direct ammonia fuel cell is employed for power generation. The performance of the developed system is investigated through both energetic and exergetic analyses. In addition, different phases of charging and discharging are considered during the energy storage operation. Furthermore, several parametric investigations are conducted to study the effects of changing operating conditions. The energy efficiency of the charging phase is found to be 41.1% and the exergy efficiency is evaluated to be 43.7%. Moreover, the energetic efficiency of the discharging phase is 78.1% while the exergetic efficiency is 73.4%. The overall efficiency of the system considering both charging and discharging phases is evaluated as 32.1%.