scholarly journals Phase Change Material Based Accumulation Panels in Combination with Renewable Energy Sources and Thermoelectric Cooling

Energies ◽  
2017 ◽  
Vol 10 (2) ◽  
pp. 152 ◽  
Author(s):  
Jan Skovajsa ◽  
Martin Koláček ◽  
Martin Zálešák
Keyword(s):  
Renewable Energy ◽  
Phase Change ◽  
Phase Change Material ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Thermoelectric Cooling ◽  
Change Material

Phasenwechselmaterialspeicher zur Lastflexibilisierung von Werkzeugmaschinen/Phase change material accumulator for energy flexibility of machine tools

2020 ◽  
Vol 110 (05) ◽  
pp. 346-353
Author(s):  
Mark Helfert ◽  
Adrian von Hayn ◽  
Jonas Wendt ◽  
Leon Dungs ◽  
Matthias Weigold
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Machine Tools ◽  
Production Management ◽  
Renewable Energy Sources ◽  
Industrial Processes ◽  
Energy Sources ◽  
Management Technology ◽  
Funded Project ◽  
Change Material

Im Rahmen des vom BMWi geförderten Projekts „Phi-Factory“ am Institut für Produktionsmanagement, Technologie und Werkzeugmaschinen (PTW) der Technischen Universität Darmstadt wurden, angesichts des steigenden Anteils fluktuierend einspeisender Stromerzeuger, technische Potenziale zur energetischen Flexibilisierung von Produktionsanlagen und Industrieprozessen untersucht. Im Bereich der Kühlung von Werkzeugmaschinen bietet der Einsatz von innovativen Phasenwechselmaterialspeichern die Möglichkeit, Lastflexibilisierung auf Maschinenebene umzusetzen, ohne den Fertigungsprozess zu beeinflussen. Zur experimentellen Untersuchung dieser Speicher wurde ein Demonstrator aufgebaut an dem ein parallel entwickelter „digitaler Zwilling“ validiert wurde.   Within the framework of the BMWi-funded project „Phi-Factory“ at the Institute for Production Management, Technology and Machine Tools (PTW) of the Technical University of Darmstadt, technical potentials for the energetic flexibilization of production plants and industrial processes were investigated in view of the increasing share of renewable energy sources. In the field of cooling of machine tools, the use of innovative phase-change material storage systems offers the possibility of implementing energy flexibility at machine level without influencing the production process. For the experimental investigation of these storages, a demonstrator was built on which a parallel developed „digital twin“ was validated.

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 Effect of Phase Change Material on Temperature in a Room Fitted With a Windcatcher

2019 ◽  
Author(s):  
Peter Abdo ◽  
B. Phuoc Huynh ◽  
Ali Braytee ◽  
Rahil Taghipour
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Natural Ventilation ◽  
Phase Change Materials ◽  
Renewable Energy Sources ◽  
Rapid Development ◽  
Inlet Channel ◽  
Latent Heat Storage ◽  
Channel Temperature ◽  
Change Material

Abstract Global warming and climate change have been considered as major challenges over the past few decades. Sustainable and renewable energy sources are nowadays needed to overcome the undesirable consequences of rapid development in the world. Phase change materials (PCM) are substances with high latent heat storage capacity which absorb or release the heat from or to the surrounding environment. They change from solid to liquid and vice versa. PCMs could be used as a passive cooling method which enhances energy efficiency in buildings. Integrating PCM with natural ventilation is investigated in this study by exploring the effect of phase change material on the temperature in a room fitted with a windcatcher. A chamber made of acrylic sheets fitted with a windcatcher is used to monitor the temperature variations. The dimensions of the chamber are 1250 × 1000 × 750 mm3. Phase change material is integrated respectively at the walls of the room, its floor and ceiling and within the windcatchers inlet channel. Temperature is measured at different locations inside the chamber. Wind is blown through the room using a fan with heating elements.

scholarly journals The Use of the Photovoltaic System in Combination With a Thermal Energy Storage for Heating and Thermoelectric Cooling

2018 ◽  
Vol 8 (10) ◽  
pp. 1750 ◽  
Author(s):  
Jan Skovajsa ◽  
Martin Zalesak
Keyword(s):  
Renewable Energy ◽  
Thermal Energy ◽  
Renewable Energy Sources ◽  
Thermal Capacity ◽  
Photovoltaic System ◽  
Energy Sources ◽  
Thermoelectric Cooling ◽  
Cooling Mode ◽  
Thermoelectric Coolers ◽  
Heating And Cooling

The article is focused on the research of the usage of modern accumulation technology. The proposed system is able to improve the thermal comfort of building interiors. That text depicts the technology, which uses a photovoltaics and other renewable energy sources for active heating and cooling. The bases of the presented technology are the phase change material and thermal energy storages. So, it passively improves the thermal capacity of the constructions of the buildings. Moreover, there is a possibility to use it for active heating and cooling. The technology contains thermoelectric assemblies, so, there is a very interesting possibility to store thermal energy with use of renewable energy sources (such as photovoltaic system) and thermoelectric coolers side by side. In the manuscript, there are shown measurements and results of the active operating modes of proposed technology. It was found the technology is able to work in active heating and cooling modes. It works quite well in active heating mode. On the other hand, thermoelectric cooling mode had a problem with overheating. In the end, the problem was solved and the cooling mode works. The measurements and results are described in the text.

scholarly journals Design and Fabrication of Solar Thermal Energy Storage System Using Potash Alum as a PCM

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6169
Author(s):  
Muhammad Suleman Malik ◽  
Naveed Iftikhar ◽  
Abdul Wadood ◽  
Muhammad Omer Khan ◽  
Muhammad Usman Asghar ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Energy ◽  
Phase Change Materials ◽  
Storage System ◽  
Energy Storage System ◽  
Renewable Energy Resources ◽  
Change Material

Renewable energy resources like solar energy, wind energy, hydro energy, photovoltaic etc. are gaining much importance due to the day by day depletion of conventional resources. Owing to the lower efficiencies of renewable energy resources, much attention has been paid to improving them. The concept of utilizing phase change materials (PCMs) has attracted wide attention in recent years. This is due to their ability to extract thermal energy when used in collaboration with photovoltaic (PV), thus improving the photoelectric conversion efficiency. In this paper, the objective is to design and fabricate a novel thermal energy storage system using phase change material. An investigation on the characteristics of Potash Alum as a phase change material due to its low cost, easy availability and its usage as an energy storage for the indoor purposes are taken into account. The use of a latent heat storage system using phase change materials (PCMs) is an effective way of storing thermal energy and has the advantage of high-energy storage density and the isothermal nature of the storage process. In the current study, potash alum was identified as a phase change material combined with renewable energy sources, that can be efficiently and effectively used in storing thermal energy at compartively lower temperatures that can later be used in daily life heating requirements.A parabolic dish which acts of a heat collector is used to track and reflects solar radiation at a single point on a receiver tank. Heat transfer from the solar collector to the storage tank is done by using a circulating heat transfer fluid with the help of a pump. The experimental results show that this system is capable of successfully storing and utilizing thermal energy on indoor scale such as cooking, heating and those applications where temperature is below 92 °C.

scholarly journals Study of Thermal Management System Using Composite Phase Change Materials and Thermoelectric Cooling Sheet for Power Battery Pack

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1937 ◽  
Author(s):  
Chuan-Wei Zhang ◽  
Shang-Rui Chen ◽  
Huai-Bin Gao ◽  
Ke-Jun Xu ◽  
Zhan Xia ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Management ◽  
Heat Dissipation ◽  
Lithium Ion ◽  
High Rate ◽  
Thermoelectric Cooling ◽  
Power Battery ◽  
Change Material

Scientific and reasonable battery thermal management systems contribute to improve the performance of a power battery, prolong its life of service, and improve its safety. Based on TAFEL-LAE895 type 100Ah ternary lithium ion power battery, this paper is conducted on charging and discharging experiments at different rates to study the rise of temperature and the uniformity of the battery. Paraffin can be used to reduce the surface temperature of the battery, while expanded graphite (EG) is added to improve the thermal conductivity and viscosity of the composite phase change material (CPCM), and to reduce the fluidity after melting. With the increase of graphite content, the heat storage capacity of phase change material (PCM) decreases, which affects the thermal management effect directly. Therefore, this paper combines heat pipe and semiconductor refrigeration technology to transform heat from the inner CPCM to the thermoelectric cooling sheet for heat dissipation. The results show that the surface temperature of the battery can be kept within a reasonable range when discharging at high rate. The temperature uniformity of the battery is improved and the energy of the battery is saved.

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 Energy Efficiency Indicators for Assessing Construction Systems Storing Renewable Energy: Application to Phase Change Material-Bearing Façades

Energies ◽  
2015 ◽  
Vol 8 (8) ◽  
pp. 8630-8649 ◽  
Author(s):  
José Tenorio ◽  
José Sánchez-Ramos ◽  
Álvaro Ruiz-Pardo ◽  
Servando Álvarez ◽  
Luisa Cabeza
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Phase Change ◽  
Phase Change Material ◽  
Energy Application ◽  
Change Material ◽  
Efficiency Indicators
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