Greenenergy Awards

  1. Introduction Enhanced Geothermal Systems (EGS) represent a promising pathway for sustainable and continuous renewable energy generation. Understanding the natural temperature recovery of geothermal reservoirs after operational shutdown is crucial for evaluating long-term performance and reservoir resilience. This research introduces a numerical simulation framework to investigate post-shutdown thermal regeneration in dual-well geothermal systems, offering valuable insights into energy sustainability, system optimization, and future geothermal deployment strategies. 2. Numerical Modeling Methodology The numerical simulation approach employed in this study integrates heat transfer equations, reservoir properties, and fluid flow dynamics to model temperature evolution after system shutdown. Advanced computational techniques enable accurate prediction of thermal recovery rates and spatial temperature distribution, making the model a reliable tool for geothermal reservoir assessm...

  1. Introduction Understanding the spatial variability of thermodynamic properties in heterogeneous soft rock is essential for accurate geotechnical design and risk assessment. Natural rock formations exhibit significant randomness due to mineral composition, weathering, and structural discontinuities. This research introduces a probabilistic framework combining Random Field Theory and Copula statistical methods to capture spatial uncertainty and dependency structures, offering a more realistic representation of subsurface conditions. 2. Spatial Variability in Heterogeneous Soft Rock Heterogeneous soft rock exhibits complex spatial variability due to geological processes such as sedimentation, diagenesis, and tectonic activity. This variability directly influences mechanical and thermodynamic behavior, making deterministic approaches insufficient. Spatial modeling allows researchers to quantify randomness and understand how material properties change across a rock mass. 3. Ap...

1. Introduction The study on self-healing and sealing technology of fractured geothermal reservoirs focuses on overcoming one of the most critical challenges in geothermal energy extraction—fracture-induced fluid loss and permeability instability. By integrating self-healing materials and intelligent sealing mechanisms, this research aims to enhance reservoir durability, operational efficiency, and long-term sustainability. The topic is significant for advancing clean energy technologies and strengthening the reliability of geothermal systems worldwide. 2. Mechanisms of Self-Healing in Geothermal Reservoirs This topic examines the fundamental physical, chemical, and mechanical mechanisms that enable self-healing within fractured geothermal reservoirs. Research highlights how engineered materials respond to pressure, temperature, and fluid flow to autonomously repair fractures, thereby restoring permeability control and minimizing operational losses. 3. Sealing Technologies for Frac...

  1. Introduction This research introduces a novel standalone TRNSYS Type specifically designed for a patented shallow ground heat exchanger integrated into a dual-source heat pump system. The study addresses existing modeling limitations by offering a simplified yet accurate simulation approach, enabling better performance prediction and system optimization. The research contributes to sustainable energy solutions by advancing geothermal heat exchanger modeling and supporting energy-efficient building applications. 2. Development of the Standalone TRNSYS Type This section focuses on the methodological framework used to develop the standalone TRNSYS Type. It explains the mathematical formulation, thermal assumptions, and boundary conditions required to model the patented shallow ground heat exchanger accurately. The development process emphasizes modularity, computational efficiency, and compatibility with existing TRNSYS libraries, making the model adaptable for future research...

  1. Introduction Hot Dry Rock (HDR) geothermal energy represents a promising frontier in sustainable energy research, offering a reliable and low-carbon alternative to fossil fuels. This study introduces a scientific method for identifying HDR target areas by integrating geological, thermal, and tectonic data. Using Continental China as a case study, the research demonstrates how systematic analysis can improve geothermal resource assessment and support long-term clean energy strategies. 2. Geological Framework Analysis This topic examines the role of geological structures, including fault systems and crustal composition, in determining HDR potential zones. The research emphasizes how stable continental regions with favorable rock properties enhance geothermal heat retention, making them suitable for HDR development. 3. Thermal Characteristics and Heat Flow Understanding subsurface temperature gradients and regional heat flow is essential for HDR exploration. This section discusse...

  1. Introduction This study introduces the feasibility of reinjecting surface water into geothermal dolomite reservoirs in Tianjin, China, focusing on sustainable geothermal energy exploitation. It outlines the significance of reinjection in maintaining reservoir pressure, preventing land subsidence, and enhancing heat recovery while addressing environmental and operational challenges in urban geothermal systems. 2. Geological Characteristics of Dolomite Reservoirs This topic examines the structural and mineralogical properties of dolomite reservoirs, emphasizing porosity, permeability, and fracture systems that influence reinjection efficiency. Understanding these geological parameters is essential for predicting fluid migration, thermal exchange, and long-term reservoir stability in geothermal applications. 3. Surface Water as a Reinjection Medium This section evaluates the feasibility of using surface water for geothermal reinjection, considering chemical compatibility, sc...

  1. Introduction This research focuses on understanding the spatial variability of thermodynamic properties in heterogeneous soft rock formations. By integrating Random Field Theory with Copula Statistical Methods, the study addresses uncertainties inherent in geological materials, providing a probabilistic framework that enhances predictive accuracy and supports reliable engineering decision-making. 2. Heterogeneity in Soft Rock Materials Soft rock formations exhibit significant spatial heterogeneity due to variations in mineral composition, porosity, and moisture content. This topic discusses how such heterogeneity influences thermodynamic behavior and why conventional deterministic approaches often fail to capture realistic material responses. 3. Application of Random Field Theory Random Field Theory is used to represent spatially varying material properties mathematically. This section highlights how random fields model uncertainty, spatial correlation, and scale effects,...

  1. Introduction The increasing urgency of climate change mitigation has intensified research into low-carbon building technologies, particularly in the residential sector where energy consumption remains high. This study introduces a comparative life cycle assessment of Ground Source Heat Pump (GSHP) systems and conventional HVAC systems, focusing on their carbon emission performance. Using a residential building case from Jinan, China, the research aims to quantify emissions across all life cycle stages and identify sustainable heating and cooling solutions suitable for urban environments. 2. Methodological Framework for Life Cycle Carbon Assessment This research adopts a life cycle assessment (LCA) methodology to systematically evaluate carbon emissions associated with GSHP and traditional HVAC systems. The framework includes material production, system installation, operational energy consumption, maintenance, and end-of-life disposal. By applying standardized LCA boundarie...

  1. Introduction This research introduces a comprehensive low-carbon design framework for block-scale science and technology industrial parks by integrating solar energy utilization potential with urban heat island effect analysis. The study highlights the growing need for climate-responsive industrial development as urbanization accelerates and carbon reduction targets become more stringent. By focusing on renewable energy integration and thermal environment optimization, the research establishes a scientific foundation for sustainable industrial park planning and contributes to the advancement of low-carbon urban research. 2. Solar Energy Utilization Potential in Industrial Park Design This topic examines the assessment of solar radiation, rooftop availability, and spatial configuration to maximize photovoltaic integration within industrial parks. The research demonstrates how solar energy potential mapping supports low-carbon energy planning, reduces dependency on fossil fu...

  1. Introduction The transition toward sustainable transportation is a critical component of global climate mitigation strategies. This research introduces a province-level assessment of motor vehicle emissions in China using the LEAP model, highlighting the importance of scenario-based planning and economic evaluation. By integrating emission reduction potential with cost–benefit analysis, the study establishes a scientific foundation for informed decision-making in sustainable mobility transitions. 2. Multi-Scenario Emission Reduction Assessment This topic explores multiple emission reduction scenarios, including policy interventions, fuel transitions, and technological advancements. By comparing baseline and alternative scenarios, the research quantifies emission reduction potential across provinces, demonstrating how strategic planning can significantly reduce environmental impacts from the transport sector. 3. Application of the LEAP Model in Transportation Research The L...

1. Introduction The rapid transition toward renewable energy has increased the complexity of modern power systems, making flexibility a critical research challenge. Multi-energy microgrids, which integrate electricity, heating, and cooling systems, offer a promising solution. This research focuses on the optimal sizing of Battery Energy Storage Systems (BESS) to unlock implicit flexibility, enabling microgrids to respond intelligently to demand variability and renewable intermittency while improving operational efficiency and sustainability. 2. Role of Battery Energy Storage in Multi-Energy Microgrids Battery Energy Storage Systems play a vital role in balancing supply and demand across interconnected energy carriers. In multi-energy microgrids, BESS supports coordinated operation between electrical and thermal systems, reduces peak demand, and enhances system resilience. Research in this area investigates how storage capacity influences flexibility without explicit demand response me...

  1. Introduction The study of calibration procedures for NOx emission models in high-speed marine diesel engines plays a critical role in advancing sustainable marine technologies. As environmental regulations intensify across global maritime sectors, accurately predicting and optimizing engine emissions becomes essential. This topic introduces the significance of NOx modeling, the need for precise calibration, and how optimization-based approaches support improved engine performance while reducing environmental impact. The research aims to bridge the gap between theoretical modeling and practical marine engineering applications. 2. Importance of Accurate NOx Emission Modeling in Marine Engines Accurate NOx emission modeling is fundamental for complying with international maritime emission regulations and improving environmental performance. High-speed marine diesel engines operate under varying dynamic conditions, making emission prediction complex. Research in this area focu...

  1. Introduction Understanding the dynamics of sustainable residential and multi-storey building retrofitting in Germany requires a holistic exploration of the interlinked policy, social, and organizational forces at play. As Germany strives to meet ambitious climate targets, building retrofitting has emerged as a cornerstone of its national sustainability agenda. However, the process involves diverse actors—policy makers, homeowners, tenants, engineers, energy agencies, and construction firms—each holding unique perspectives and concerns. This study critically examines those stakeholder viewpoints to uncover the barriers, motivations, and systemic gaps shaping retrofit outcomes. Through the lens of interdisciplinary research, it explores how governance frameworks, societal expectations, and institutional capacities collectively influence the success and scalability of sustainable retrofitting initiatives. 2. Policy Frameworks and Regulatory Barriers Germany’s retrofit ecosystem...

  1) Introduction Hybrid hydro–solar energy systems represent an emerging research frontier in sustainable energy management, integrating hydropower and solar photovoltaic technologies to ensure reliable, efficient, and environmentally responsible electricity generation. Current research focuses on optimizing system design, improving load balancing, and minimizing energy losses through intelligent control algorithms. These systems are increasingly recognized as a critical solution for addressing energy variability, enhancing grid stability, and supporting long-term sustainability goals. 2) Optimization Techniques in Hybrid Hydro–Solar Systems Research in optimization techniques focuses on improving energy output by using advanced mathematical models and artificial intelligence–based algorithms. These studies explore real-time power dispatch, storage coordination, and predictive control systems that maximize efficiency under changing weather and load conditions. The goal is to achie...

1. Introduction The integration of photobioreactor systems with supercritical water oxidation represents a groundbreaking approach in renewable energy research by enabling efficient conversion of microalgae biomass into usable energy. This research area focuses on designing optimized process configurations that increase biomass productivity, reduce energy losses, and enhance overall system sustainability, while supporting global efforts to reduce dependence on fossil fuels and mitigate climate change. 2. Microalgae Cultivation Optimization Research This research topic focuses on improving the growth conditions of microalgae within photobioreactors through optimized light intensity, nutrient delivery, carbon dioxide enrichment, and temperature control. The goal is to maximize biomass yield while maintaining low operational costs and ensuring stable, scalable production systems suitable for industrial-level energy generation applications. 3. Supercritical Water Oxidation Process Deve...

  1. Introduction The research on battery sizing and composition in domestic renewable energy systems focuses on developing reliable, efficient, and sustainable energy storage solutions for residential applications. As the global demand for clean energy increases, optimizing battery dimensions and material choices becomes essential to ensure uninterrupted power supply, reduce dependency on fossil fuels, and improve overall system performance in home-scale solar and wind installations. 2. Battery Sizing Methodologies for Residential Renewable Systems This research area examines advanced methods and mathematical models used to determine optimal battery capacity for domestic renewable installations. It explores load profiling, peak demand analysis, seasonal variation, and backup time requirements to design battery banks that balance performance, cost, and lifespan while ensuring energy reliability for households using solar and wind power systems. 3. Comparative Study of Battery Chemi...

  1. Introduction Understanding peristomal skin complications is critical within the field of ostomy care research, as these conditions significantly affect patient comfort, quality of life, and long-term health outcomes. This study, based on a detailed web-based survey, investigates the prevalence and nature of skin issues that arise around stoma sites, emphasizing the need for systematic assessment and evidence-driven strategies. By examining patient-reported experiences and analyzing clinical correlations, this research identifies key risk factors and highlights gaps in current ostomy management practices. The findings contribute to broader scientific discussions surrounding wound care, preventative approaches, and patient-centered clinical guidelines. 2. Prevalence and Patterns of Peristomal Skin Complications This topic explores the wide range of peristomal skin complications identified through survey responses, detailing their frequency, severity, and associated symptoms. B...

  1. Introduction  The growing need for sustainable solutions in public healthcare infrastructure has accelerated research into advanced decision-making frameworks capable of evaluating complex renewable energy proposals. This study emphasizes the application of the Analytic Hierarchy Process (AHP) as a robust multicriteria method for comparing diverse energy alternatives based on economic, environmental, and technical factors. Through a focused case study of an Italian hospital, the research demonstrates how structured decision models enhance clarity, transparency, and efficiency in selecting optimal renewable energy services.  2. Multicriteria Decision-Making in Renewable Energy Evaluation Multicriteria Decision-Making (MCDM) approaches have become essential in evaluating renewable energy solutions due to their ability to integrate qualitative and quantitative factors. This topic explores how MCDM supports balanced decision-making by considering financial feasibility...

  Real Options in Hybrid Renewable Investments | Insights from a Systematic Review 1. Introduction The exploration of real option approaches within hybrid renewable energy investments provides a sharper lens for understanding how uncertainty, flexibility, and evolving technology costs influence long-term energy planning. This review illuminates a research landscape where decision-makers increasingly rely on dynamic models to evaluate future-centric renewable portfolios rather than static cost–benefit analyses. By stitching together insights from numerous studies, the work showcases how hybrid systems—pairing solar, wind, biomass, storage, and more—benefit from adaptable decision frameworks that respond intelligently to market and environmental fluctuations. 2. Evolution of Real Option Approaches in Renewable Energy Research over the past decade reveals a steady shift from traditional financial evaluation tools toward flexible real-option-based models that account for volatility in ...