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The Real-Time Optimisation of DNO Owned Storage Devices on the LV Network for Peak Reduction

Rowe, Matthew; Yunusov, Timur; Haben, Stephen; … - In: Energies 7 (2014) 6, pp. 3537-3560

against a control algorithm with a perfect forecast. A specific case study, using storage on the LV network, is presented, and …

Persistent link: https://www.econbiz.de/10010778846

Autoregressive with Exogenous Variables and Neural Network Short-Term Load Forecast Models for Residential Low Voltage Distribution Networks

Bennett, Christopher; Stewart, Rodney A.; Lu, Junwei - In: Energies 7 (2014) 5, pp. 2938-2960

develop next day total energy use (NDTEU) and next day peak demand (NDPD) forecast models for each phase. The models were ….87 and forecast accuracy ranged from 0.74 to 0.84. NDPD hindcast accuracy ranged from 0.68 to 0.74 and forecast accuracy … combined the best traits of the ARIMAX and NN techniques, resulting in improved hindcast and forecast fits across the all three …

Persistent link: https://www.econbiz.de/10011031054

A New System to Estimate and Reduce Electrical Energy Consumption of Domestic Hot Water in Spain

Gutierrez-Escolar, Alberto; Castillo-Martinez, Ana; … - In: Energies 7 (2014) 11, pp. 6837-6855

estimation is a key tool to plan modifications that could enhance this consumption and we decided to update the methodologies. We … estimation methodologies and chooses the best fit based on information given by the users. Finally, the application provides …

Persistent link: https://www.econbiz.de/10010945700

Thermodynamic Rarity and the Loss of Mineral Wealth

Valero, Antonio; Valero, Alicia - In: Energies 8 (2015) 2, pp. 821-836

The second law of thermodynamics and, specifically, exergy analysis have been traditionally used for the assessment and optimization of energy systems. Nevertheless, as shown in this paper, exergy could also constitute a powerful tool for the evaluation of mineral commodities. That said, new or...

Persistent link: https://www.econbiz.de/10011133882

A Back-to-Back 2L-3L Grid Integration of a Marine Current Energy Converter

Apelfröjd, Senad; Ekström, Rickard; Thomas, Karin; … - In: Energies 8 (2015) 2, pp. 808-820

The paper proposes a back-to-back 2L-3L grid connection topology for a marine current energy converter. A prototype marine current energy converter has been deployed by a research group at Uppsala University. The concept behind the prototype revolves around a fixed pitch vertical axis turbine...

Persistent link: https://www.econbiz.de/10011133883

Reliability-Based Structural Optimization of Wave Energy Converters

Ambühl, Simon; Kramer, Morten; Sørensen, John Dalsgaard - In: Energies 7 (2014) 12, pp. 8178-8200

More and more wave energy converter (WEC) concepts are reaching prototypelevel. Once the prototype level is reached, the next step in order to further decrease thelevelized cost of energy (LCOE) is optimizing the overall system with a focus on structuraland maintenance (inspection) costs, as...

Persistent link: https://www.econbiz.de/10011096205

Numerical and Theoretical Investigations Concerning the Continuous-Surface-Curvature Effect in Compressor Blades

Song, Yin; Gu, Chun-Wei; Xiao, Yao-Bing - In: Energies 7 (2014) 12, pp. 8150-8177

Though the importance of curvature continuity on compressor blade performances has been realized, there are two major questions that need to be solved,<i> i.e.</i>, the respective effects of curvature continuity at the leading-edge blend point and the main surface, and the contradiction between the...

Persistent link: https://www.econbiz.de/10011096206

Thermal Performance Evaluation of Two Thermal Energy Storage Tank Design Concepts for Use with a Solid Particle Receiver-Based Solar Power Tower

El-Leathy, Abdelrahman; Jeter, Sheldon; Al-Ansary, Hany; … - In: Energies 7 (2014) 12, pp. 8201-8216

This paper presents the results of an extensive study of two thermal energy storage (TES) systems. The goal of the research is to make solar energy cost-competitive with other forms of electricity. A small-scale TES system was first built. The inner to outer layers were made of firebrick (FB),...

Persistent link: https://www.econbiz.de/10011096207

Advanced Energy Harvesting from Macroalgae—Innovative Integration of Drying, Gasification and Combined Cycle

Aziz, Muhammad; Oda, Takuya; Kashiwagi, Takao - In: Energies 7 (2014) 12, pp. 8217-8235

State-of-the-art integrated macroalgae utilization processes, consisting of drying, gasification, and combined cycle, are proposed and their performance with respect to energy efficiency are evaluated. To achieve high exergy efficiency, the integration is performed through two main principles:...

Persistent link: https://www.econbiz.de/10011096853

Part-Load Performance of aWet Indirectly Fired Gas Turbine Integrated with an Organic Rankine Cycle Turbogenerator

Pierobon, Leonardo; Nguyen, Tuong-Van; Mazzucco, Andrea; … - In: Energies 7 (2014) 12, pp. 8294-8316

Over the last years, much attention has been paid to the development of efficient and low-cost power systems for biomass-to-electricity conversion. This paper aims at investigating the design- and part-load performance of an innovative plant based on a wet indirectly fired gas turbine (WIFGT)...

Persistent link: https://www.econbiz.de/10011096854