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A novel hybrid ammonia fuel cell and thermal energy storage system
Author(s) -
Siddiqui Osamah,
Dincer Ibrahim
Publication year - 2018
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4219
Subject(s) - energy storage , ammonia , thermal energy storage , power density , thermal , exergy , electrolyte , thermal energy , materials science , chemistry , exergy efficiency , nuclear engineering , chemical engineering , thermodynamics , power (physics) , engineering , organic chemistry , physics , electrode
Summary In this paper, we develop and experimentally investigate a novel hybrid ammonia fuel cell and thermal energy storage system. A molten alkaline salt is utilized for storing thermal energy as well as operating an alkaline electrolyte‐based direct ammonia fuel cell. The specific thermal energy storage capacity of the hybrid system is found to be 133 kJ kg −1 at a temperature of 320°C. Furthermore, the maximum power densities are found to be 2.1±0.1 W m −2 to 2.3±0.1 W m −2 for operating temperatures varying between 220°C and 320°C. The energy efficiency is evaluated as 20.6±0.6%, and the exergy efficiency is determined to be 23.3±0.7% at the peak power density.