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 Phase-Change Materials in Hydronic Heating and Cooling Systems: A Literature Review

Materials ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 2971
Author(s):  
Rok Koželj ◽  
Eneja Osterman ◽  
Fabrizio Leonforte ◽  
Claudio Del Pero ◽  
Alessandro Miglioli ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Phase Change ◽  
Phase Change Materials ◽  
Renewable Energy Sources ◽  
Thermal Storage ◽  
Heat Pumps ◽  
Hot Water ◽  
Energy Sources ◽  
Practical Implementation ◽  
Heating And Cooling

When considering the deployment of renewable energy sources in systems, the challenge of their utilization comes from their time instability when a mismatch between production and demand occurs. With the integration of thermal storages into systems that utilize renewable energy sources, such mismatch can be evened out. The use of phase-change materials (PCMs) as thermal storage has a theoretical advantage over the sensible one because of their high latent heat that is released or accumulated during the phase-change process. Therefore, the present paper is a review of latent thermal storages in hydronic systems for heating, cooling and domestic hot water in buildings. The work aims to offer an overview on applications of latent thermal storages coupled with heat pumps and solar collectors. The review shows that phase-change materials improve the release of heat from thermal storage and can supply heat or cold at a desired temperature level for longer time periods. The PCM review ends with the results from one of the Horizon2020 research projects, where indirect electrical storage in the form of thermal storage is considered. The review is a technological outline of the current state-of-the-art technology that could serve as a knowledge base for the practical implementation of latent thermal storages. The paper ends with an overview of energy storage maturity and the objectives from different roadmaps of European bodies.

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.

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.

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