Ammonia-Based Thermochemical Storage Can Achieve SunShot Cost Targets for Solar Thermal Power
Category: Resource Management · Effect: Strong effect · Year: 2016
Advancements in ammonia-based thermochemical energy storage (TCES) demonstrate its potential to significantly reduce the cost of concentrating solar thermal power, aligning with ambitious cost reduction goals.
Design Takeaway
Integrate and optimize ammonia-based thermochemical energy storage systems to reduce the levelized cost of electricity for concentrating solar thermal power.
Why It Matters
This research highlights a viable pathway for making solar thermal power more economically competitive. By focusing on cost-effective storage solutions, designers can explore new opportunities for renewable energy integration and grid stability.
Key Finding
The study found that key components of an ammonia-based thermochemical energy storage system, including underground storage, steam generation via ammonia synthesis, and reactor integration, are technically viable and can contribute to meeting aggressive cost targets for solar thermal power.
Key Findings
- Underground containment of gaseous products from the dissociation reaction is feasible.
- Ammonia synthesis can effectively generate steam for a supercritical-steam Rankine cycle.
- Integration of endothermic reactors within a tower receiver is achievable.
Research Evidence
Aim: Can ammonia-based thermochemical energy storage systems be designed to meet the $15/kWht SunShot cost target for concentrating solar thermal power?
Method: Conceptual design and preliminary engineering analysis
Procedure: The research involved identifying promising approaches for underground containment of gaseous products, demonstrating the use of ammonia synthesis for steam generation in a Rankine cycle, and developing a preliminary design for integrating endothermic reactors within a tower receiver.
Context: Concentrating Solar Thermal Power (CSP) systems
Design Principle
Cost-effective energy storage is essential for the widespread adoption of intermittent renewable energy sources.
How to Apply
When designing solar thermal power plants, incorporate TCES solutions, specifically exploring ammonia-based systems for their cost-reduction potential.
Limitations
The study presents preliminary designs and analyses; further detailed engineering and pilot testing are required for full-scale implementation.
Student Guide (IB Design Technology)
Simple Explanation: This research shows that using ammonia to store heat from solar power could make solar power much cheaper, helping it compete with other energy sources.
Why This Matters: Understanding advanced energy storage methods like TCES is crucial for designing sustainable and cost-effective energy systems.
Critical Thinking: How might the safety and environmental considerations of using ammonia in large-scale energy storage systems influence its adoption, and what design strategies could mitigate these concerns?
IA-Ready Paragraph: Research into ammonia-based thermochemical energy storage (TCES) indicates significant potential for cost reduction in concentrating solar thermal power systems, with advancements in underground containment, steam generation, and reactor integration suggesting a viable path towards meeting ambitious cost targets like the $15/kWht SunShot goal. This highlights the importance of exploring advanced storage mechanisms for improving the economic competitiveness of renewable energy.
Project Tips
- When researching energy storage, look into thermochemical methods.
- Consider the cost implications of different energy storage technologies for your design project.
How to Use in IA
- Reference this study when discussing the economic viability of renewable energy storage solutions in your design project.
Examiner Tips
- Demonstrate an understanding of how energy storage impacts the overall cost and feasibility of renewable energy projects.
Independent Variable: Advancements in TCES components (underground containment, ammonia synthesis for steam, reactor integration)
Dependent Variable: Cost of concentrating solar thermal power ($/kWht)
Controlled Variables: Solar resource availability, Rankine cycle efficiency, material costs
Strengths
- Addresses a critical barrier to CSP adoption: cost.
- Presents a novel application of ammonia for energy storage.
Critical Questions
- What are the long-term material degradation issues associated with ammonia TCES?
- How does the efficiency of ammonia synthesis for steam generation compare to conventional methods?
Extended Essay Application
- Investigate the feasibility of a scaled-down model demonstrating ammonia's thermochemical storage potential, focusing on material selection and energy transfer efficiency.
Source
Thermochemical energy storage with ammonia: Aiming for the sunshot cost target · AIP conference proceedings · 2016 · 10.1063/1.4949126