Renewable energy, especially solar power, has become increasingly important in the fight against climate change. As the global community strives to achieve the Sustainable Development Goals set by the United Nations, finding energy alternatives that reduce greenhouse gas emissions is crucial. Concentrating Solar Power (CSP) is one such technology that shows immense potential in this regard.
A recent review conducted by Jayathunga, Karunathilake, Narayana, and Witharana delves into the use of phase change materials (PCMs) for thermal energy storage in CSP plants. PCMs, specifically those employing latent heat thermal energy storage (LHTES), have emerged as a promising option due to their high efficiency and economic viability.
Examining over 200 published articles and websites, the study uncovers the history, technologies, economics, and current trends surrounding PCM as an LHTES material for CSP plants. A key finding of the research is the identification of 163 PCM candidates suitable for LHTES systems in varying temperature applications. This comprehensive list, categorized based on low-temperature (T < 220 °C) and medium-temperature (220 °C < T < 420 °C) requirements, provides valuable insights for further exploration and implementation.
The implications of this study are significant. With the availability of over 2,945,926 TWh/year of global CSP potential, harnessing solar energy through innovative technologies like PCMs can help reduce dependency on fossil fuels and mitigate approximately 2.1 GtCO2 of greenhouse gas emissions. Furthermore, adopting efficient thermal energy storage systems enhances dispatchability, reliability, efficiency, and overall economy of CSP plants.
As we look towards the future, identifying research gaps is crucial to determine the next steps in the development of PCMs for LHTES in CSP plants. The review study emphasizes the importance of further investigation in this field, highlighting the need for ongoing research and collaboration.
In conclusion, the exploration and implementation of phase change materials for thermal energy storage in Concentrated Solar Power plants hold immense potential. By leveraging the efficiency and economic viability of PCMs, we can pave the way towards a more sustainable and greener future.
Frequently Asked Questions (FAQ): Phase Change Materials for Thermal Energy Storage in Concentrated Solar Power (CSP) Plants
Q: What is the importance of renewable energy in the fight against climate change?
A: Renewable energy, such as solar power, is crucial in reducing greenhouse gas emissions and achieving the Sustainable Development Goals set by the United Nations.
Q: What is Concentrated Solar Power (CSP)?
A: Concentrated Solar Power (CSP) is a technology that uses mirrors or lenses to concentrate sunlight and convert it into heat, which can then be used to generate electricity through steam turbines.
Q: What are phase change materials (PCMs)?
A: Phase change materials (PCMs) are substances that can absorb and release large amounts of thermal energy when they change from one phase to another, such as from solid to liquid.
Q: What is latent heat thermal energy storage (LHTES)?
A: Latent heat thermal energy storage (LHTES) is a method that utilizes the heat absorbed or released during the phase change of PCMs to store thermal energy for later use.
Q: What are the advantages of using PCMs for thermal energy storage in CSP plants?
A: PCMs offer high efficiency and economic viability for thermal energy storage. They can enhance the dispatchability, reliability, efficiency, and overall economy of CSP plants.
Q: What did the recent review study uncover about the use of PCMs in CSP plants?
A: The review study identified 163 PCM candidates suitable for LHTES systems in varying temperature applications. These candidates are categorized based on low-temperature and medium-temperature requirements.
Q: What is the global CSP potential in terms of energy production?
A: The study estimated that there is over 2,945,926 Tera Watt-hours per year (TWh/year) of global CSP potential.
Q: How can the use of PCMs in CSP plants contribute to reducing greenhouse gas emissions?
A: By harnessing solar energy through innovative technologies like PCMs, CSP plants can help reduce dependency on fossil fuels and mitigate approximately 2.1 Gigatons of CO2 (GtCO2) of greenhouse gas emissions.
Q: What is the importance of ongoing research and collaboration in the field of PCMs for LHTES in CSP plants?
A: Ongoing research and collaboration are vital for identifying research gaps and further improving the development of PCMs for thermal energy storage in CSP plants.