TY - JOUR A1 - S, Kasiviswanathan A1 - Shajahan, Mohamed Iqbal A1 - R, Bharathiraja A1 - Murali, Arun Prasad A1 - Benim, Ali Cemal T1 - Comprehensive overview of phase change materials in electronics, building, and solar applications JF - Engineering Research Express N2 - Phase change materials (PCMs) are a viable way to improve energy efficiency and thermal control in a variety of sectors. With an emphasis on their function in thermal control, this review article offers an in-depth review of PCM applications in electronics, buildings and solar energy systems. PCMs are used in electronics to control device temperatures, which lowers the risk of overheating and increases operational efficiency by 10% to 25%. Through latent heat storage and release in reaction to temperature changes, PCMs are incorporated into walls, floors, and roofs in building applications to improve thermal comfort and cut energy use by 15% to 30%. By storing thermal energy for steady power generation, PCMs increase the dependability and efficiency of solar energy systems by 8%–20%. This review examines the basic ideas behind PCMs, assesses various PCM (such as organic, inorganic, and eutectic PCMs), and details about real-world applications in these energy management fields. Important issues are examined, such as material compatibility, cost-effectiveness, and long-term stability. In order to maximize performance in these crucial applications, the conclusion emphasizes the need for improvements in cost-effective PCM formulations for the improved thermal conductivity (0.2–0.7 W m−1·K−1), and adaptive control systems. KW - Energieeffizienz KW - Temperaturregelung KW - Elektronik KW - Latentwärmespeicher KW - Sonnenenergie Y1 - 2026 U6 - https://doi.org/10.1088/2631-8695/ae342a SN - 2631-8695 VL - 8 IS - 3 PB - IOP Publishing ER - TY - JOUR A1 - Bergmann, Marie A1 - Haddad-Thoelke, Pascale A1 - Jeong, Haeran A1 - Kappeler, Ron A1 - Altug, Hicran A1 - Oberwinster, Lukas A1 - Boogaard, Hanna A1 - Pohl, Tobias A1 - Soppa, Vanessa A1 - Ogurtsova, Katherine A1 - Joss, Meltem Kutlar A1 - Andersen, Zorana Jovanovic A1 - Hoffmann, Barbara T1 - Systematic review and meta-analysis on the health effects of long-term exposure to ultrafine particles JF - European Respiratory Review N2 - Background Ultrafine particles (≤100 nm diameter) may have a higher toxicity than larger particles but are still not regulated nor part of routine air pollution monitoring. So far, health effects of long-term exposure to ambient ultrafine particles are not well understood, owing to a lack of exposure data and epidemiological studies. Methods We conducted a systematic review and meta-analysis on the health effects of long-term exposure to ultrafine particles, including studies published until December 2024. A meta-analysis was conducted for outcomes with at least four available effect estimates. Confidence in the body of evidence was evaluated using the Office of Health Assessment and Translation method. Results We identified 85 studies investigating various mortality, morbidity and subclinical outcomes. In meta-analyses of single-pollutant models, we found positive associations with natural mortality (hazard ratio 1.06, 95% CI 1.04–1.08) and C-reactive protein (10.14% increase (95% CI −0.51–21.99%) per 10 000 pt·cm−3 increase in long-term exposure to ultrafine particles, with low and inadequate levels of evidence, respectively. The remaining studies revealed overall limited evidence for adverse effects on a wide range of outcomes. Less than half of the studies adjusted for co-pollutants. Conclusion The evidence base on long-term health effects of ultrafine particles has increased substantially in the past decade, while the overall evidence for independent effects of long-term ultrafine particle exposure remains inadequate to low. More studies are needed to draw firm conclusions about the independent adverse effects of long-term ultrafine particles on various health end-points, with a special focus on the influence of co-pollutant adjustment. KW - Luftreinhaltung KW - Schadstoffbelastung KW - Luftverunreinigender Stoff KW - Feinstaub KW - Auswirkung Y1 - 2026 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-60272 SN - 1600-0617 VL - 35 IS - 179 PB - European Respiratory Society ER - TY - JOUR A1 - Sulaiman, Mohammed A. A1 - Saber, Hindren Ali A1 - Hasan, Hasan F. A1 - Benim, Ali Cemal T1 - Latent heat cold storage integrated direct evaporative cooler: A neoteric practical design for energy and water saving potential with thermal comfort improvement JF - Journal of Energy Storage KW - Latentwärmespeicher KW - Verdunstungskühlung KW - Energieeinsparung KW - Wassereinsparung Y1 - 2026 U6 - https://doi.org/10.1016/j.est.2025.119612 SN - 2352-152X VL - 143 PB - Elsevier ER - TY - JOUR A1 - Jahr, Andreas A1 - Batos, Andrej A1 - Happel, Holger A1 - Corves, Burkhard T1 - Mehrkörpersimulation eines Schnittprozesses JF - LANDTECHNIK N2 - Es wird gezeigt, wie ein Schnittprozess aus dem Bereich der Erntetechnik mit dem Mehrkörpersimulationsprogramm SimMechanics simuliert werden kann. Ziel ist es, im Rahmen des Forschungsvorhabens eine Grundlage zu schaffen für die virtuelle Bestimmung der erforderlichen Antriebsleistung und Optimierung von Mähdrescherhäckslern hinsichtlich einer nachhaltigen und Ressourcen schonenden Leistungssteigerung. KW - Erntetechnik KW - Schnittprozess KW - Simulation KW - Harvest technology KW - cutting process Y1 - 2008 U6 - https://doi.org/10.15150/LT.2008.822 VL - 63 IS - 4 SP - 218 EP - 220 PB - Kuratorium für Technik und Bauwesen in der Landwirtschaft e.V. ER - TY - JOUR A1 - Mandal, Dipak Kumar A1 - Manna, Nirmal K. A1 - Biswas, Nirmalendu A1 - Rudra, Tansu A1 - Kumar, Rajesh A1 - Benim, Ali Cemal T1 - Enhanced heat transport in magneto-nanofluidic thermal systems: adiabatic block effects in grooved channels and ANN modeling JF - International Journal of Thermofluids N2 - This study investigates heat transfer enhancement in magneto-nanofluidic systems through the strategic placement of adiabatic blocks in grooved channels. Using CuO–H2O nanofluid in a bottom-heated channel with circular expansion, we examine the complex interactions between forced convection, magnetic fields, and uoyancy effects. Through systematic numerical analysis, we explore the combined influences of Rayleigh, Reynolds, and Hartmann numbers on thermal performance. Our findings reveal significant heat transfer enhancement (up to 137 %) under optimal conditions, particularly with vertical magnetic field orientation at Re = 100 and Ha = 30. The results demonstrate how adiabatic blocks modify flow structures, with larger blocks diminishing vortex intensity while elevated Ra generates secondary vortices that interact with primary circulations. Magnetic field effects show notable dependence on orientation, with vertical fields generally promoting better heat transfer than horizontal configurations. To complement the numerical analysis, we develop a predictive model using Artificial Neural Network (ANN) for Nusselt numbers across various operating conditions, achieving over 99 % accuracy. The integrated computational-ANN approach offers significant advancements in optimizing thermal systems in various areas, ranging from electronics cooling to microfluidic devices. KW - Mixed convective flow KW - Nanofluids KW - Heat transfer augmentation KW - Adiabatic block KW - Grooved channel KW - Neural network KW - HSD Publikationsfonds Y1 - 2026 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-60127 SN - 2666-2027 VL - 31 PB - Elsevier ER - TY - JOUR A1 - Jahr, Andreas A1 - Corves, Burkhard A1 - Batos, Andrej A1 - Schumacher, Mathias T1 - Simulation landtechnischer Schnitt- und Strömungsprozesse JF - agricultural engineering.eu N2 - Der Einsatz moderner Simulationsverfahren beschränkt sich im Bereich der Landmaschinenentwicklung in der Regel auf Anwendungen, die aus der Automobiltechnik bekannt sind. Darüber hinaus könnten diese Verfahren auch im Rahmen der Auslegung von Erntemaschinen hinsichtlich des Ernteprozesses einen maßgeblichen Beitrag zur weiteren Ressourcenschonung und Energieverbrauchsminderung leisten. Im Folgenden wird ein Ansatz zur Simulation erntetechnischer Schnittprozesse mit Hilfe der Mehrkörpersimulation (MKS) vorgestellt. Ferner soll die Anwendung der Strömungssimulation (CFD) am Beispiel eines Schlegelhäckslers gezeigt werden. KW - Strömungssimulation (CFD) KW - Mehrkörpersimulation (MKS) KW - Mähdrescherhäcksler KW - Schnittprozess Y1 - 2010 U6 - https://doi.org/10.15150/lt.2010.518 SN - 2943-5641 N1 - Diese Veröffentlichung beruht auf den Ergebnissen eines ProInno II-Projektes [1], das vom BMWi gefördert wurde und in Zusammenarbeit mit der Ennepetaler Schneid- und Mähtechnik GmbH & Co. KG (www.esm-ept.de) entstand VL - 65 IS - 5 SP - 372 EP - 375 PB - Kuratorium für Technik und Bauwesen in der Landwirtschaft e. V. (KTBL) ER - TY - JOUR A1 - Batos, Andrej A1 - Ruepp, Maximilian A1 - Jahr, Andreas A1 - Corves, Burkhard T1 - Ermittlung der Biege- und Schnitteigenschaften von Halmgut mit einem Universalprüfstand JF - LANDTECHNIK KW - auto KW - Universalprüfstand KW - Messung KW - Biegeeigenschaften KW - Schnitteigenschaften KW - Halm Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-59856 SP - 84 EP - 96 PB - Kuratorium für Technik und Bauwesen in der Landwirtschaft e.V. ER - TY - JOUR A1 - Carsten, Stöhr A1 - Monika, Janssen A1 - Jörg, Niemann A1 - Benedikt, Reich T1 - Smart Services JF - Procedia - Social and Behavioral Sciences Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-59819 SN - 1877-0428 VL - 238 SP - 192 EP - 198 PB - Elsevier ET - SIM 2017 / 14th International Symposium in Managemen ER - TY - JOUR A1 - Shajahan, Mohamed Iqbal A1 - Benim, Ali Cemal T1 - Granular PCM based heat sink for electronics thermal management JF - Applied Thermal Engineering N2 - This study investigates aluminum heat sinks integrated with GR42 phase change material (PCM), aiming to enhance thermal inertia and stabilize device temperatures. This is important, since the increasing miniaturization and performance demands for electronic devices have led in a growing need for advanced thermal management systems capable of handling rapid transient loads. The novelty of the work lies in examining different heat sink layouts that optimize the heat dissipation capabilities of GR42 PCMs while minimizing size and weight for electronic cooling. The experimental testing was conducted using three configurations, namely no fin, circular fin and hexagonal fin, with three input powers (4 W, 8 W, and 12 W). The experimental results show that the hexagonal-fin heat sink, surface area is 25 % more than circular fins, exhibited superior thermal performance without significant variation in input power. Notably, the hexagonal-fin heat sink achieved the desired set point temperature of 55 ◦C in 33 % less time than the circular-fin design and 45 % less time than the heat sink without fins. Furthermore, the peak temperatures increased up to 21 % for circular fins. During the charging cycles, the enhancement ratios vary from 72 % and begin to narrow to 25 % during discharge cycles. The hexagonal-fin configuration also exhibited superior melting dynamics, completing the phase transition 44 % faster at higher input power than the circular fins, and established a thermal deviation of nearly 51 % less than finless heat sinks. These findings underscore the critical role of fin geometry and PCM integration in achieving uniform temperature distribution and improved energy storage efficiency. Overall, the hexagonal-fin heat sink with GR42 PCM shows strong potential as a passive cooling solution for low-power portable electronic devices. KW - Heat sinks KW - Portable electronic cooling KW - Latent heat storage KW - GR42 PCM KW - Hexagonal fin KW - Circular fin KW - HSD Publikationsfonds KW - DFG Publikationskosten Y1 - 2026 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-59649 SN - 1359-4311 VL - 286 PB - Elsevier ER - TY - JOUR A1 - Ocakci, Elif A1 - Niemann, Jörg A1 - Draghici, George T1 - A Method to Evaluate the Life Cycle Sustainability Value of Alternative Solution Designs JF - Acta Technica Napocensis; Series: Applied Mathematics, Mechanics and Engineering N2 - The paper focuses on developing an integrative methodology to evaluate environmental, economic, and social sustainability of alternative solution design options. Core approach is to extend the classic method of Quality Function Deployment (QFD) towards a holistic integrated model to overall evaluate the different aspects of all three pillars of sustainability (economy, ecology and social) across the product life cycle. The methods identify key aspects and allow users to consider and weigh different life cycle aspects in a overall scoring scheme. KW - Nachhaltigkeit KW - Produktlebenszyklus KW - Evaluation KW - Quality Function Deployment Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-58290 UR - https://atna-mam.utcluj.ro/index.php/Acta/article/view/2809 SN - 2393–2988 VL - 68 IS - 1S SP - 277 EP - 284 PB - Technical University of Cluj-Napoca ER -