Thermodynamic assessment of an integrated renewable energy multigeneration system including ammonia as hydrogen carrier and phase change material energy storage

Usman Bin Shahid, Y. Bicer, Said Ahzi, Ahmed Abdala

Research output: Contribution to journalArticle

Abstract

Sustainable development and effective management of resources has become an integral need of future energy systems. This study considers a unique multi-generation system involving ammonia synthesis using electrolytically produced hydrogen from desalinated water, alongside supply of basic utilities like potable water, heating, cooling, and electricity. The integrated system employs a phase change material based-energy storage unit to provide uninterrupted energy supply to the system. Energy and exergy analysis of the overall and sub-systems based on the first and second law of thermodynamics reveal valuable insights into the performance of such a system. A rigorous analysis of external parameters including environmental temperature, direct normal irradiance on the overall and component energy/exergy efficiencies is performed. The analysis reveals that the utilities demand of a remote area can be met in a more sustainable and environmentally friendly manner using the proposed multi-generation system. An overall system exergy and energy efficiencies of 18.9% and 28.0% respectively are obtained, whereas the sub-systems are also found to have energy efficiencies ranging between 15 and 80%. The highest exergy destruction rates of 25 megawatts and 32 megawatts are observed for the multi-stage flash distillation and the steam Rankine cycle sub-systems respectively. An elementary environmental impact assessment of the same system reveals that the proposed system can help reduce the carbon footprint by almost 60% with no significant compromise on the overall exergy and energy efficiencies.

Original languageEnglish
Article number111809
JournalEnergy Conversion and Management
Volume198
DOIs
Publication statusPublished - 15 Oct 2019

Fingerprint

Phase change materials
Exergy
Energy storage
Ammonia
Thermodynamics
Hydrogen
Energy efficiency
Carbon footprint
Rankine cycle
Environmental impact assessments
Water supply
Potable water
Distillation
Sustainable development
Steam
Electricity
Cooling
Heating
Temperature

Keywords

  • Ammonia
  • Biomass
  • Desalination
  • Efficiency
  • Environment
  • Exergy
  • Phase change material
  • Solar energy
  • Sustainable

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

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abstract = "Sustainable development and effective management of resources has become an integral need of future energy systems. This study considers a unique multi-generation system involving ammonia synthesis using electrolytically produced hydrogen from desalinated water, alongside supply of basic utilities like potable water, heating, cooling, and electricity. The integrated system employs a phase change material based-energy storage unit to provide uninterrupted energy supply to the system. Energy and exergy analysis of the overall and sub-systems based on the first and second law of thermodynamics reveal valuable insights into the performance of such a system. A rigorous analysis of external parameters including environmental temperature, direct normal irradiance on the overall and component energy/exergy efficiencies is performed. The analysis reveals that the utilities demand of a remote area can be met in a more sustainable and environmentally friendly manner using the proposed multi-generation system. An overall system exergy and energy efficiencies of 18.9{\%} and 28.0{\%} respectively are obtained, whereas the sub-systems are also found to have energy efficiencies ranging between 15 and 80{\%}. The highest exergy destruction rates of 25 megawatts and 32 megawatts are observed for the multi-stage flash distillation and the steam Rankine cycle sub-systems respectively. An elementary environmental impact assessment of the same system reveals that the proposed system can help reduce the carbon footprint by almost 60{\%} with no significant compromise on the overall exergy and energy efficiencies.",
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