scholarly journals Thermally Activated Concrete Slabs with Integrated PCM Materials

2019 ◽  
Vol 111 ◽  
pp. 01080
Author(s):  
Renars Millers ◽  
Aleksandrs Korjakins ◽  
Arturs Lesinskis
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Energy Demand ◽  
Phase Change Materials ◽  
High Efficiency ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Residential Building ◽  
Energy Sources ◽  
Thermally Activated

As building codes are pushing towards higher energy efficiency and the arrival of nearly Zero Energy Building (nZEB) requirements for all new buildings are just around the corner the need for alternative, high efficiency heating and cooling solutions for nZEB’s is greater than ever. Also as experience with renewable energy sources has proven the energy demand and energy generation rarely overlaps and it does not allow to fully utilise some renewable energy sources. This is a simulation study that focuses on integrated cooling and energy storage system utilising phase-change materials (PCM). Several types of thermally activated slabs with different PCM thicknesses were simulated in order to find the most optimal PCM thickness with melting point temperature that can support passive cooling methods based on adiabatic cooling principles. Two calculation tools were used for the study – IDA ICE 4.8 and U-NORM 2012-2 to calculate the properties of the slabs and potential of application in well insulated residential building in Baltic climate. The results showed that the optimal thickness for thermally activated PCM layer (large flat containers) range from 25 mm to 90 mm, and for layers with no thermal activation – 180 mm and more. Moreover the results show that apart from energy storage the thermally activated panel can increase thermal comfort conditions.

scholarly journals A Flexible Operation and Sizing of Battery Energy Storage System Based on Butterfly Optimization Algorithm

Electronics ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 109
Author(s):  
Basit Olakunle Alawode ◽  
Umar Taiwo Salman ◽  
Muhammad Khalid
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Total Energy ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Cost Effective ◽  
Energy Storage System ◽  
Energy Sources ◽  
Flexible Operation

There is a surge in the total energy demand of the world due to the increase in the world’s population and the ever-increasing human dependence on technology. Conventional non-renewable energy sources still contribute a larger amount to the total energy production. Due to their greenhouse gas emissions and environmental pollution, the substitution of these sources with renewable energy sources (RES) is desired. However, RES, such as wind energy, are uncertain, intermittent, and unpredictable. Hence, there is a need to optimize their usage when they are available. This can be carried out through a flexible operation of a microgrid system with the power grid to gradually reduce the contribution of the conventional sources in the power system using energy storage systems (ESS). To integrate the RES in a cost-effective approach, the ESS must be optimally sized and operated within its safe limitations. This study, therefore, presents a flexible method for the optimal sizing and operation of battery ESS (BESS) in a wind-penetrated microgrid system using the butterfly optimization (BO) algorithm. The BO algorithm was utilized for its simple and fast implementation and for its ability to obtain global optimization parameters. In the formulation of the optimization problem, the study considers the depth of discharge and life-cycle of the BESS. Simulation results for three different scenarios were studied, analyzed, and compared. The resulting optimized BESS connected scenario yielded the most cost-effective strategy among all scenarios considered.

Modeling an Energy Storage System Based on a Hybrid Renewable Energy System in Stand-alone Applications

2017 ◽  
Vol 68 (11) ◽  
pp. 2641-2645
Author(s):  
Alexandru Ciocan ◽  
Ovidiu Mihai Balan ◽  
Mihaela Ramona Buga ◽  
Tudor Prisecaru ◽  
Mohand Tazerout
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Storage Systems ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Energy Storage System ◽  
Compressed Air ◽  
Energy Sources ◽  
Energy Storage Systems ◽  
Hybrid Renewable Energy System

The current paper presents an energy storage system that stores the excessive energy, provided by a hybrid system of renewable energy sources, in the form of compressed air and thermal heat. Using energy storage systems together with renewable energy sources represents a major challenge that could ensure the transition to a viable economic future and a decarbonized economy. Thermodynamic calculations are conducted to investigate the performance of such systems by using Matlab simulation tools. The results indicate the values of primary and global efficiencies for various operating scenarios for the energy storage systems which use compressed air as medium storage, and shows that these could be very effective systems, proving the possibility to supply to the final user three types of energy: electricity, heat and cold function of his needs.

Revolution of Energy Storage System in Smart Grids

2016 ◽  
pp. 181-206
Author(s):  
Jianhui Wong ◽  
Yun Seng Lim
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Smart Grid ◽  
Electric Vehicles ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Sources ◽  
Electrical Grid ◽  
Technical Issues

Electrical grid is no longer featured in a conventional way nowadays. Today, the growing of new technologies, primarily the distributed renewable energy sources and electric vehicles, has been integrated with the distribution networks causing several technical issues. As a result, the penetration of the renewable energy sources can be limited by the utility companies. Smart grid has been emerged as one of the solutions to the technical issues, hence allowing the usage of renewable and improving the energy efficiency of the electrical grid. The challenge is to develop an intelligent management system to maintain the balance between the generation and demand. This task can be performed by using energy storage system. As part of the smart grid, the deployment of energy storage system plays a critical role in stabilizing the voltage and frequency of the networks with renewable energy sources and electric vehicles. This book chapter illustrates the revolution and the roles of energy storage for improving the network performance.

scholarly journals Sílice Mesoporosa como encapsulador de materiales de cambio de fase (PCM)

2019 ◽  
pp. 14-19 ◽  
Author(s):  
Nancy González-Cervantes ◽  
Mercedes Salazar-Hernández ◽  
Miroslava Cano-Lara ◽  
Carmen Salazar-Hernández
Keyword(s):  
Thermal Stability ◽  
Renewable Energy ◽  
Energy Storage ◽  
Phase Change ◽  
Phase Change Materials ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Research Topics ◽  
Solar Energy Storage ◽  
High Latent Heat

Today, the effective renewable energy sources are research topics, with direct solar radiation being one of the best sources of energy. However, the use of this form of energy is optimized with the development of technologies for storage (TES). One of the proposed techniques for solar energy storage is the application of phase change materials (PCMs). Several candidates of phase change materials such as organic and inorganic and their mixtures have been proposed as energy storage because they have a high latent heat. However, a disadvantage of these materials is their decomposition during storage and energy release cycles, therefore, in this project it is proposed to encapsulate PCMs in mesoporous silica networks in order to increase thermal stability.

scholarly journals Unit Commitment in the Presence of Renewable Energy Sources and Energy Storage System: Case Study

2018 ◽  
Vol 12 (6) ◽  
Author(s):  
Issoufou Tahirou Halidou ◽  
Harun Or Rashid Howlader ◽  
Mohammed E. Lotfy ◽  
Atsushi Yona ◽  
Tomonobu Senjyu
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Unit Commitment ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Sources
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