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Optimized Thermal Energy Storage Technology Based on Phase Change Material

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "G: Energy and Buildings".

Deadline for manuscript submissions: 5 June 2026 | Viewed by 1769

Special Issue Editors


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Guest Editor
Department of Mechanical Engineering, College of Engineering and Computer Science, California State University, Sacramento, CA 95819, USA
Interests: renewable energy; solar energy; computational fluid dynamics; thermal energy storage; thermal management systems
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Guest Editor
Oak Ridge National Laboratory, Buildings and Transportation Science Division, 1 Bethel Valley Road, Oak Ridge, TN 37830, USA
Interests: thermal energy storage; renewable energy; ionic liquids; gas separation

Special Issue Information

Dear Colleagues,

This Special Issue aims to demonstrate the advancements and applications of optimized thermal-energy storage (TES) technology centered around phase change materials (PCMs). TES systems are crucial for efficiently managing and utilizing thermal energy across various sectors, including buildings, industrial processes, and renewable energy systems. PCMs, with their ability to store and release large amounts of latent heat during phase transitions, have emerged as promising candidates for enhancing TES performance.

Contributions to this Special Issue cover a wide range of topics, including the following:

  1. Novel PCM Development: papers discuss the synthesis and characterization of new PCM materials with tailored properties such as high latent heats, appropriate phase change temperatures, and improved thermal stability;
  2. Enhanced TES-System Design: researchers present innovative designs and optimization strategies for TES systems utilizing PCMs, aiming to improve energy-storage capacity, thermal conductivity, and overall system efficiency;
  3. Modeling and Simulation: theoretical studies employ advanced modeling and simulation techniques to analyze the thermal behavior of PCM-based TES systems under various operating conditions, facilitating the optimization of system performance;
  4. Applications and Case Studies: real-world applications and case studies demonstrate the practical implementation of PCM-based TES technology in diverse fields, including solar-energy storage, HVAC systems, cold storage, and waste heat recovery;
  5. Integration with Renewable Energy Sources: investigations explore the integration of PCM-based TES systems with renewable energy sources such as solar and wind power, highlighting the role of TES in mitigating intermittency and enhancing the overall viability of renewable energy technologies.

Overall, this Special Issue provides valuable insights into the latest developments, challenges, and opportunities in optimized thermal-energy storage technology based on phase change materials, contributing to the advancement of sustainable energy solutions and the transition towards a low-carbon future.

Dr. Sarvenaz Sobhansarbandi
Dr. Tugba Turnaoglu
Guest Editors

Manuscript Submission Information

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Keywords

  • thermal-energy storage (TES)
  • phase change materials (PCMs)
  • latent-heat storage
  • energy efficiency
  • heat-transfer enhancement
  • thermal conductivity
  • PCM characterization
  • TES-system design
  • modeling and simulation
  • renewable-energy integration
  • sustainable buildings
  • solar thermal energy
  • waste heat recovery
  • thermal management
  • heat exchangers

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Published Papers (1 paper)

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Research

19 pages, 5628 KiB  
Article
Numerical Investigation of Solar Collector Performance with Encapsulated PCM: A Transient, 3D Approach
by Malik Adnan Faisal, Amin Rahmani and Mohammad Akrami
Energies 2024, 17(21), 5243; https://doi.org/10.3390/en17215243 - 22 Oct 2024
Cited by 1 | Viewed by 1167
Abstract
This study presents a comprehensive numerical investigation into the thermal performance of solar collectors integrated with encapsulated phase change materials (PCMs) using a transient three-dimensional (3D) approach. The performance of two distinct PCMs—paraffin wax and RT60—was evaluated under varying operational conditions, including seasonal [...] Read more.
This study presents a comprehensive numerical investigation into the thermal performance of solar collectors integrated with encapsulated phase change materials (PCMs) using a transient three-dimensional (3D) approach. The performance of two distinct PCMs—paraffin wax and RT60—was evaluated under varying operational conditions, including seasonal variations, inlet pipe velocities, and inlet temperatures. The results indicate that paraffin wax exhibits a higher peak temperature, reaching approximately 360 K, compared to RT60’s peak of 345 K, making paraffin wax more effective for consistent thermal energy storage. Paraffin wax also maintained higher fluid fractions, with a maximum of 0.9 in summer, indicating superior heat absorption and retention capabilities. In contrast, RT60 demonstrated a quicker phase transition, fully liquefying at a lower fluid fraction, which is advantageous for rapid heat release. Seasonal variations significantly impacted system efficiency, with the highest efficiency observed in June at 365 K and the lowest in December at 340 K. The study also found that lower inlet velocities (e.g., 0.25 L/s) significantly improved heat retention, resulting in higher outlet temperatures, while increasing the inlet temperature from 290 K to 310 K led to a marked increase in outlet temperatures throughout the day. These findings underscore the importance of optimizing PCM selection, inlet velocity, and temperature in enhancing the performance of solar thermal systems, offering quantitative insights that contribute to the development of more efficient and reliable renewable energy solutions. Full article
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