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2 w - Traduire

Thermal Performance Evaluation of Phase Change Materials in Hybrid Heat Storage Systems for Solar Thermal Energy Applications

Introduction
With rising global energy demand and environmental concerns, renewable energy sources, particularly solar thermal energy, have gained significant attention. Solar thermal energy systems are highly effective for sustainable power generation but face limitations due to the intermittent nature of sunlight. Heat storage systems are essential in overcoming this limitation, and phase change materials (PCMs) are being explored to store and release thermal energy efficiently (Wang et al., 2022). In hybrid heat storage systems, which integrate different energy storage technologies, PCMs offer a promising solution for improving thermal performance, reducing energy losses, and ensuring continuous energy supply even when sunlight is unavailable. This article evaluates the role and performance of PCMs in hybrid heat storage systems for solar applications, examining their benefits, challenges, and future potential.
2. Understanding Phase Change Materials (PCMs)
PCMs absorb and release significant latent heat during phase changes, usually between solid and liquid states. This latent heat enables PCMs to store substantial energy in a compact volume, making them highly effective for thermal energy storage applications (Nie et al., 202. PCMs enhance storage capacity, thermal stability, and energy efficiency when integrated into hybrid heat storage systems.
2.1 Advantages of PCMs in Hybrid Heat Storage Systems
High Energy Density: PCMs offer high energy storage density, allowing more energy storage in a smaller space, ideal for compact systems.
Isothermal Operation: PCMs absorb or release heat at a constant temperature, which aids in maintaining steady output temperatures in heat storage systems.
Improved Efficiency in Hybrid Systems: By combining PCMs with other storage technologies (e.g., sensible heat storage materials), hybrid systems achieve enhanced thermal stability and reliability.
2.2 Role of Hybrid Heat Storage Systems in Solar Thermal Energy Applications
Hybrid heat storage systems integrate multiple energy storage mechanisms, combining sensible heat storage (SHS) and latent heat storage (LHS) with PCMs (Suresh & Saini, 202. This combination leverages the strengths of each mechanism, allowing efficient storage and release of thermal energy while minimizing the shortcomings of each storage method.
In solar thermal applications, hybrid systems that incorporate PCMs provide several advantages:
Extended Heat Storage Duration: By storing thermal energy from sunlight during the day, PCMs enable the release of stored energy during non-solar periods, reducing dependency on sunlight availability.
Enhanced Thermal Stability: The combination of SHS and LHS with PCMs allows hybrid systems to handle fluctuations in solar energy, ensuring a stable and continuous heat output.
Cost and Space Efficiency: Hybrid systems maximize energy storage capacity without significantly increasing costs or requiring larger spaces, making them suitable for residential and industrial applications.
2.3 Evaluating Thermal Performance of PCMs in Hybrid Heat Storage
The effectiveness of PCMs in hybrid heat storage systems depends on their thermal performance, which is influenced by factors like melting temperature, thermal conductivity, and storage capacity (Liu et al., 2022). Optimizing these parameters is essential to maximizing PCM efficiency in solar applications.
Melting Temperature: Selecting a PCM with an appropriate melting temperature for the desired operating range ensures optimal energy storage and release. PCMs with melting points around 50–100°C are commonly used for solar applications.
Thermal Conductivity: PCMs with high thermal conductivity are preferred to enhance the heat transfer rate. Advanced techniques, such as adding conductive nanoparticles, can improve PCM thermal conductivity and performance in hybrid systems.
Energy Storage Capacity: PCMs with higher energy density can store more thermal energy, allowing hybrid systems to operate efficiently with smaller storage volumes. By increasing the energy density of the PCM, the overall thermal capacity of the hybrid system is significantly enhanced.
2.4 Challenges and Future Prospects of PCM-Based Hybrid Systems
While PCMs offer numerous advantages, several challenges must be addressed to maximize their efficiency in hybrid heat storage systems. Key issues include thermal cycling stability (Liu et al., 202, phase separation, and high material costs. Overcoming these challenges through innovative research and advanced materials will enable the broader adoption of PCM-based hybrid systems in solar thermal energy applications.
Thermal Cycling Stability: Repeated heating and cooling can lead to the degradation of PCMs, reducing their effectiveness over time.

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Digital Transformation using AI & Data Analytics powered innovation

1. Introduction
In today’s hyper connected world, digital transformation is reshaping how organizations operate, interact, and innovate. As digital networks and smart devices proliferate, an enormous amount of big data is generated across various sectors. Artificial Intelligence (AI) has emerged as a central tool for processing and deriving insights from this complex and high-volume data through techniques like machine learning, deep learning, and pattern recognition (Gupta & George, 2023). By leveraging these AI-driven technologies, businesses can unlock unprecedented value, optimize operations, and enhance decision-making processes. Through innovations in data analytics and predictive modelling, AI is redefining traditional business models, fostering efficiency, and enabling companies to keep pace with an ever-evolving digital landscape (Smith & Brown, 2022). This paper examines the critical role of AI in digital transformation, focusing on key innovation pillars such as performance monitoring, predictive analytics, and innovative product development, which drive sustainable growth and operational excellence.

2. Analysis

2.1 Performance Monitoring
Performance monitoring is a crucial pillar of digital transformation, where AI analyses real-time data to ensure optimal performance and identify inefficiencies in systems and processes. By continuously tracking and assessing operations, AI-powered solutions can signal deviations or potential issues before they escalate. For example, in manufacturing, AI-based performance monitoring tools can predict equipment failures, thereby reducing downtime and maintenance costs. In retail, AI-driven performance analytics can provide insights into customer behavior, allowing for timely adjustments in product offerings and marketing strategies (Johnson & Li, 2024). This continuous performance assessment helps organizations to remain agile and responsive to dynamic market conditions, aligning their digital transformation strategies with operational goals.

2.2 Continuous Learning
AI adaptability and learning capabilities are integral to fostering continuous improvement within digital transformation frameworks. Machine learning algorithms evolve over time, making AI solutions “perpetually in beta.” This evolutionary nature allows AI systems to continually learn from new data, which keeps them aligned with the shifting needs and challenges of the business environment (Gonzalez & Ahmed, 2022). In sectors like healthcare, AI-based systems can learn from vast amounts of clinical data, improving diagnostic accuracy and optimizing treatment plans. The iterative process of continuous learning is essential to maintaining relevance, as it equips organizations to adapt to technological advances and changing consumer expectations.

2.3 Data Analytics and Predictive Modelling
Data analytics, coupled with predictive modelling, serves as the backbone of digital transformation by providing actionable insights and foresight into future trends. AI-driven data analytics enables companies to uncover hidden patterns within complex data sets, thus offering a strategic edge. Predictive modelling is especially valuable for sectors like finance and e-commerce, where accurate forecasts of market trends, consumer behaviour, and product demand are critical (Smith & Brown, 2022). By analysing historical data and identifying predictive factors, AI solutions can guide organizations in resource allocation, risk management, and demand forecasting. This ability to foresee future scenarios positions organizations to make proactive, data-driven decisions that minimize risk and enhance overall competitiveness.

2.4 Innovative Product Development
AI role in product innovation allows businesses to rethink traditional product development processes by harnessing data-driven insights for tailored solutions. By automating routine tasks, AI frees human resources to focus on creative problem-solving and developing cutting-edge products. Personalization is one of the significant achievements of AI in product innovation, particularly in industries such as retail and entertainment, where customized experiences enhance customer engagement and loyalty (James & Thomas, 2023). Through AI-powered customization, organizations can cater to individual preferences and expectations, thus building stronger connections with their customers and differentiating themselves from competitors. By embedding AI into product development, companies are better equipped to innovate and remain competitive in their respective markets.

2.5 Implementation
Effective implementation of AI-powered digital transformation requires a structured approach, focusing on the alignment of technology with organizational objectives. Key steps for successful integration include several factors.

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