Abstract
ABSTRACT This work presents an integrated system that produces multiple outputs which are electricity, space heating, and freshwater using an ammonia molten alkaline fuel cell and two Rankine cycles for additional power generation using waste heat recovery. The ammonia molten alkaline fuel cell heat rejections are recovered by an organic Rankine cycle to produce more electricity and increase the overall performance of the integrated system. This system is then modeled using a thermodynamic approach through energy and exergy analyses to evaluate the overall performance and hence perform parametric studies to observe its behavior under varying operating settings. The results of the modeling study show that the overall energy and exergy efficiencies of the integrated system can reach values of 49.7% and 50.5%, respectively. The overall energy efficiency is higher than a standalone ammonia alkaline fuel cell by almost 14 percentage points. This integration proves that using waste heat recovery for an alkaline fuel cell can enhance the overall efficiencies of the proposed system.
Published Version
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