ALMACENAMIENTO TÉRMICO

PROYECTOS CONCLUIDOS


OPTS

Optimization of a thermal storage system with integrated steam generator

Client

Overall Cost

POP

European Commission,
7th FP

8.65M€

2010-2014

Project Description

Descripción: http://www.opts.enea.it/images/workshop.png

Project Summary

OPTS project aimed at developing a new Thermal Energy Storage (TES) system based on single tank configuration using stratifying Molten Salts (MS,  Sodium/Potassium Nitrates 60/40 w/w) as heat storage medium at 550°C maximum temperature, integrated with a Steam Generator (SG), to provide efficient, reliable and economic energy storage for the next generation of trough and tower plants.

Thermal Storage Group’s Role

 

CIEMAT gained valuable experience in integrating thermocline storage tanks in CSP simulation models as well as definition of efficient operation strategies for this type of storage systems.

 

Technical Approach and Resources Used

 

The research team was engaged in

  • Analysis, modeling and simulation of thermocline storage tanks with internal filler.
  • Implementation of TES systems in CSP performance models.
  • Analysis and optimization of control strategies for thermocline storage systems in CSP plants.
  • Experimental design and test matrix for a TES-SG prototype of 12.5 MWth.
  • Experimental evaluation of equipment for molten salt loops.
  • Heat transfer coefficient for molten salt-SG.

 

Project Results (including any commercial outcomes)

Key Staff

The project aimed at the full development of the integrated system (TES-SG) up to demonstration level. The SG, with natural recirculation of the MS, can be either positioned directly into the tank (Pool-type) or as an external shell-and-tube once-through SG (Loop-type) with thermocline storage tank.

  • Dr. Mª Esther Rojas
  • Dr. Rocio Bayón
  • Mario Biencinto
  • Margarita Rodriguez
  • Esther Rivas

 

TESCONSOL

Thermal Storage for Concentrating Solar Power Plants

Client

Overall Cost

POP

KiC-InnoEnergy, European Institute of Technology (EIT).

6.7M€

2011

Project Description

Project Summary

Development of cost effective thermal storage systems for CSP, with an investment cost of less than 25 €/kWh capacity. Current thermal storage systems represent about 10% of the investment cost of a CSP plant, but depending on the plant this cost can be even bigger. The aim of this project was basically to reduce the high costs in existing systems and to look for viable possibilities for as yet undeveloped thermal energy storage systems. Development of experimental and numerical tools/platforms for future designs and industrial technological support will be carried out.

Thermal Storage Group’s Role

CIEMAT gained valuable experience while screening potential improvements for reducing TES cost.

Technical Approach and Resources Used

The research team was engaged in:

  • Designing and launching the project.
  • New latent storage module proposal for low-k PCM

Project Results (including any commercial outcomes)

Key Staff

New products and services (at the end of the project, 2014): platforms for prediction and design of performance operation for molten salt systems; characterization of candidate materials for molten salt TES and latent storage systems;       platforms for prediction and design of performance operation for latent storage systems; strategies for TES integration in CSP plants; E-learning module for life-long learning, as well as InnoEnergy MSc and PhD programs.

  • Dr. Mª Esther Rojas
  • Dr. Rocio Bayón
  • Esther Rivas

 

 

SFERA

Solar Facilities for the European Research Area

Client

Overall Cost

POP

European Commission, FP7-INFRASTRUCTURES-2008-1/ 

7.4M€

2009-2013

Project Description

Project Summary

The purpose of SFERA was to integrate, coordinate and further focus scientific collaboration among the leading European research institutions in solar concentrating systems and offer European researchers and industry access to the best-qualified research and test infrastructures. To improve the quality of their installation test services, the partners will cooperate to establish common guidelines on how to perform testing and develop and exchange best-practice approaches.

Thermal Storage Group’s Role

CIEMAT gained valuable experience in defining critical parameters for different thermal storage systems as well as in defining testing procedures for such a systems with a unified and coherent nomenclature.

Technical Approach and Resources Used

The research team was engaged in

  • Definition of standardized procedures for testing of thermal energy storage systems and CSP components prototypes.

Project Results (including any commercial outcomes)

Key Staff

The foundations for creating a unified virtual European Laboratory for Concentrating Solar Systems, with ready access for interested researchers, have been layed.

  • Dr. Mª Esther Rojas
  • Dr. Rocio Bayón
  • Dr. Loreto Valenzuela

 

ConSOLI+DA 

 Consorcio Solar de I+D

Client

Overall Cost

POP

Spanish Center for Industrial Development (CDTI)

24M€

2008 - 2012

Project Description

Project Summary

The main goal of ConSOL+IDA Project was to create the necessary R&D infrastructure to consolidate Spain as the world leader in Concentrating Solar Technologies. The 13 activities to work on can be grouped in 3 vertical areas: R&D for improving CSP technology; R&D for enhancing CSP integration and R&D on new approaches

Thermal Storage Group’s Role

CIEMAT gained valuable experience in modeling thermocline storage tanks and simulating oil-molten salt heat exchangers by CFD software.

Technical Approach and Resources Used

The research team was engaged in modeling and simulation activities on Thermal Storage for thermocline systems and oil-molten salt heat exchangers.
 

Project Results (including any commercial outcomes)

Key Staff

The project having involved 23 companies and 20 research and technological centers, the achievements were manyfold, especially in the improvement of CSP components, simulation and grid integration.

  • Dr. Mª Esther Rojas
  • Dr. Rocio Bayón
  • Dr. Loreto Valenzuela
  • Dr. Eduardo Zarza

 

DISTOR

Energy Storage for Direct Steam Solar Plants (DISTOR)

Client

Overall Cost

POP

European Commission, 6th FP

3.94M€

2004-2007

Project Description

Project Summary

The DISTOR project focused on the development of thermal storage systems using phase change materials (PCM) in the temperature range from 230°C to 330°C for systems using steam between 30 and 100bar. In order to accelerate the development, the DISTOR project was based on parallel research into three different storage concepts. These concepts include innovative aspects like encapsulated PCM, evaporation heat transfer and new design concepts. This parallel approach takes advantage of synergy effects and will enable the identification of the most promising storage concept.

Ciemat’s Role

CIEMAT gained valuable experience in designing, testing and evaluation of latent storage systems with low-k PCMs.

 

Technical Approach and Resources Used

The research team was engaged in

  • Contribution to the design of the low-k PCM storage module based on a fin concept.
  • Experimental evaluation of this prototype.

Project Results (including any commercial outcomes)

Key Staff

The project resulted in the following main deliverables:

  • Development of advanced storage materials based on composite-PCM technology adapted to steam generation/condensation in the range 200 - 300 °C.
  • Design and evaluation of 100 kW storage module based on fin-concept
  • Dr. Mª Esther Rojas
  • Dr. Loreto Valenzuela
  • Dr. Eduardo Zarza