Final Report of Subtask B “Chemical and Sorption Storage”
Report B7 of Subtask B
February 2008 - PDF 0.21MB
Editor: Chris Bales
This report is the final report of a Subtask of the Task 32 “Advanced Storage Concepts for solar and low energy buildings” of the Solar Heating and Cooling Programme of the International Energy Agency. 23 pages

Simulation Report - System: Closed-Cycle Sorption Storage "MODESTORE"
Report B6.2 of Subtask B
February 2008 - PDF 0.65MB
The system simulated in this study is based on the pilot plant system tested within the project MODESTORE (EU-Project Contract No: NNE5/2001/979 and an Austrian national project within the program ‘Haus der Zukunft’). However, the result of these projects was that the used material combination (silica gel and water) is not suitable for heat storage at the desired temperature levels for space heating. Therefore, this study was carried out using the material characteristics of a different sorption material (FAM-Z01 by Mitsubishi) which is available on the market but has not been used for storage applications because of its high costs. The purpose of this study is to show the possibilities of closed-cycle sorption heat storage with reasonable material properties knowing that for a market introduction of such a system more material research is necessary in order to identify a material with good properties but at reasonable costs. 34 pages

Simulation Report - System: ECN TCM Model
Report B6.1 of Subtask B
February 2008 - PDF 0.27MB
The ECN Thermo-Chemical Materials (TCM) heat storage system is an absorption process that is based on the hydration of a solid TCM salt. At this moment, the development of this system is still in a very early stage. The research in this stage focuses on materials characterization (now mainly on the hydration of MgSO4 powder). The outlook for the future is to develop a seasonal storage system for solar heat with the solid absorption material that will be selected. 22 pages

Simulation Report - System: Monosorp
Report B6.3 of Subtask B
February 2008 - PDF 0.25MB
The reference combi system has been extended by an open cycle adsorption store in conjunction with a ventilation heat recovery system. Because of the high desorption temperatures required (120...180°C) the use of a highly efficient vacuum tube collector is essential for the overall efficiency of the solar heating system. 16 pages

Simulations of Systems with Chemical and Sorption Stores
Report B6 of Subtask B
February 2008 - PDF 0.18MB
Editor: Chris Bales
Three systems with sorption or chemical storage have been simulated with the same boundary conditions as other stores using water or phase change materials. The buildings, including heat distribution system, hot water load, climate were all the same, as were the models used for the collector circuit. This report gives a brief background to these simulations and the target functions used, while the description of the simulation models and results for these three systems are described in three sub-reports, essentially three separate reports. 15 pages

Store Models for Chemical and Sorption Storage Units
Report B5 of Subtask B
February 2008 - PDF 0.65MB
Editor: Chris Bales
Storage models have been developed for four of the storage concepts that have been studied within Subtask B of IEA-SHC Task 32. For each model, the basic function of the store is described in addition to the model itself. The main assumptions and limitations of each model are stated. Finally details are supplied about the validation of the model. 30 pages

Laboratory Tests of Chemical Reactions and Prototype Sorption Storage Units
Report B4 of Subtask B
January 2008 - PDF 1.4MB
Editor: Chris Bales
The work reported here shows that significant advances have been made in terms of chemical and sorption storage. New concepts have been developed, not only to the laboratory prototype stage but even to successful field trials. 55 pages

Laboratory Prototypes of Thermo-Chemical and Sorption Storage Units
Report B3 of Subtask B
June 2007 - PDF 0.98MB
Editor: Chris Bales
This technical report provides detailed results on four different prototype storage units tested in SHC Task 32, Advanced Storage Concepts for Solar and Low Energy Buildings. The key figures for the prototypes are presented together with projected sizes and heat storage densities for hypothetical stores with 70 and 1000 kWh storage for single family homes. In the final section of the report, the prototypes are compared in terms of energy density and material cost. 34 pages

Chemical and Sorption Storage - Selection of Concepts
Report B1 of Subtask B
May 2005 - PDF 0.4MB
Editor: Chris Bales
This report is part of Subtask B of the Task 32 of the Solar Heating and Cooling Programme of the International Energy Agency dealing with solutions of storage based on adsoprtion or absorption processes and on thermochemical reactions. The density of storage for these techniques compared to that of water is theoretically 2 to 10 depending on the temperature range of comparison. 23 pages

Thermal Properties of Materials for Thermo-chemical Storage of Solar Heat
Report B2 of Subtask B
May 2005 - PDF 0.35MB
Editor: Chris Bales
This report is part of Subtask B of the Task 32 of the Solar Heating and Cooling Programme of the International Energy Agency dealing with solutions of storage based on adsoprtion or absorption processes and on thermochemical reactions. Adsorption promising techniques based on silicagel or zeolite materials, long time forgotten for solar energy, have been investigated in Task 32. Chemical reactions adapted to storage of solar heat for the purpose of heating a building have also been looked at.