Sharifzadeh, M;
Meghdari, M;
Rashtchian, D;
(2016)
Multi-objective design and operation of Solid Oxide Fuel Cell (SOFC) Triple Combined-cycle Power Generation systems: Integrating energy efficiency and operational safety.
Applied Energy
, 185
pp. 345-361.
10.1016/j.apenergy.2016.11.010.
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Abstract
Energy efficiency is one of the main pathways for energy security and environmental protection. In fact, the International Energy Agency asserts that without energy efficiency, 70% of targeted emission reductions are not achievable. Despite this clarity, enhancing the energy efficiency introduce significant challenge toward process operation. The reason is that the methods applied for energy-saving pose the process operation at the intersection of safety constraints. The present research aims at uncovering the trade-off between safe operation and energy efficiency; an optimization framework is developed that ensures process safety and simultaneously optimizes energy-efficiency, quantified in economic terms. The developed optimization framework is demonstrated for a solid oxide fuel cell (SOFC) power generation system. The significance of this industrial application is that SOFC power plants apply a highly degree of process integration resulting in very narrow operating windows. However, they are subject to significant uncertainties in power demand. The results demonstrate a strong trade-off between the competing objectives. It was observed that highly energy-efficient designs feature a very narrow operating window and limited flexibility. For instance, expanding the safe operating window by 100% will incur almost 47% more annualized costs. Establishing such a trade-off is essential for realizing energy-saving.
| Type: | Article |
|---|---|
| Title: | Multi-objective design and operation of Solid Oxide Fuel Cell (SOFC) Triple Combined-cycle Power Generation systems: Integrating energy efficiency and operational safety |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.apenergy.2016.11.010 |
| Publisher version: | https://doi.org/10.1016/j.apenergy.2016.11.010 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Technology, Energy & Fuels, Engineering, Chemical, Engineering, Integrated process design and control, Safe process operation, Multi-objective optimization under uncertainty, SOFC Triple Combined-cycle Power, Generation Systems, GAS-TURBINE HYBRID, CONTROLLED PROCESS MODEL, INHERENT SAFETY, RISK ANALYSIS, NATURAL-GAS, CHEMICAL-PROCESSES, INDUSTRIAL-SCALE, CARBON CAPTURE, OPTIMIZATION, PLANT |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10024260 |
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