LATENT HEAT STORAGE, LHS

The latent heat research activities deal with the heat that is released or absorbed at constant temperature by a thermodynamic system during a phase transition. Since the latent heat is linked to the breaking/formation of strong correlation forces, the latent heat density is usually much larger than the sensible heat density. Then, a large amount of heat can be released at a fixed temperature. The major objective is to develop materials showing solid-to-liquid phase transitions at requested temperatures, and given thermal conductivity values, being these characteristics dictated by the particular technological applications. At the same time, the development of heat storage/heat exchanger systems is also pursued.

Research activities

Metal Alloys: material characterization and storage system testing

This project aims to overcome the main drawbacks of the most used storage materials, which means their low thermal conductivity and their limited operation temperature. To overcome these problems, the project proposes the use of metal alloys as latent heat storage materials. Several binary and ternary systems with interesting properties in this field, such as Sn-Bi, Sn-Zn, Mg-Sn, Bi-Zn and Mg-Zn-Al have been pre-selected. Aside from material characterization and material compatibility analysis, the project is managing a lab-scale storage facility based on a thermal oil loop (Tmax ≃ 400ºC).

Materials for Seasonal Heat Storage

The project aims at developing new materials to enhance the thermal conductivity of PCMs for thermal energy seasonal storage, being the space heating one of the most significant applications. In the particular application under study, carbon foams (graphitized or partially graphitized), and with pore size distributions ranging from micro- to macro-sizes, are under development. The foam is structurally characterized, is saturated with sugar alcohols, and then the thermal properties of the composite systems are correlated to the foam characteristics.

High temperature storages for CSP plants

This project aims to develop high temperature storage systems having the ability to deliver a high amount of heat in a short time (high heat power). Such kinds of storages are essential to manage short time transients in CSP plants. The transients are generated during the daily start-up plant operations, and by the variable meteorological conditions. Candidate materials for these storages are PCMs with high thermal conductivities, and their choice critically depends from the particular application.

Nano fluids for LHS: Synthesis, thermo-physical characterization and compatibility analysis

Properly designed nano-fluids and nano clusters have a big potential to be used as HTF as well as PCM dispersions to store heat for applications in which a heat flux management up to 800ºC is required. The design of a stable PCM requires the choice of suitable dispersion media, dispersed nano particles and nano particle stabilizers. Such choices are based on a detailed knowledge of the microscopic interactions between all system components. Microscopic simulation involving first principle (DFT), classical Molecular Dynamics and Brownian Dynamics are planned to drive the material synthesis, and to interpret the thermo-physical characterization data ...

Research Line Leader

Abdessamad Faik

+34 945 297 108

Parque Tecnologico C/Albert Einstein 48 CP 01510 Minano (Alava) Spain
Abdessamad Faik
More info

Dr. Abdessamad Faik (PhD, Univ.Basque Country,Spain, 2009). His PhD focused on synthesis, structural study and phase transitions at non-ambient conditions of perovskite materials. He has an extensive experience in synthesis of new compounds by different methods and a strong knowledge in X-ray and neutron diffraction.

He has held a Post-doctoral fellow for 14 months at the French National Centre for Scientific Research (CNRS) in Orleans (France) in the domain of thermal storage for concentrated solar power plants where he has studied and developed innovative and original materials for sensible thermal energy storage.

His second Post-doctoral position was held at CIC energiGUNE for 20 months, with a stay as a guest scientist during the first year at the German Aerospace Center (DLR) in Stuttgart (Germany). Here he studied and developed new materials for thermochemical energy storage.

He then worked at the Research Institute of Solar Energy and New Energies (IRESEN) in Rabat (Morocco) as a head of Thermal Systems Department where he has participated in several academic and industrial projects.

Researchers

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