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Progress-Report I 2012

Progress-Report I 2012. Objectives. Identify, design and develop new materials and composites Develop measuring and testing procedures Improve performance, stability, and cost-effectiveness Develop multi-scale numerical models Develop and demonstrate novel storage systems

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Progress-Report I 2012

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  1. Progress-Report I 2012

  2. Objectives • Identify, design and develop new materials and composites • Develop measuring and testing procedures • Improve performance, stability, and cost-effectiveness • Develop multi-scale numerical models • Develop and demonstrate novel storage systems • Assess the impact of new materials on systems performance • Disseminate the acquired knowledge and experience • Create an active and effective research network

  3. Scope • Classes of materials: • phase change materials • sorption and thermochemical materials • From small to large-scale: • molecular/particlematerial synthesis, micro-scale mass transport, sorption reactions, … • bulkheat/mass transport, wall-material interactions, reactor design, … • systemeconomical feasibility studies, case studies, system tests, …

  4. Organisational Structure

  5. Organisational Structure

  6. Meetings

  7. the enthalpy of reactions increases with temperature of reaction equilibrium WG C: Physical Limits Chemical Reactions Is there a rule? EvaporationTroutons‘s Rule Melting of ElementsRichardson‘s Rule

  8. Reaction in Equilibrium: ∆G = 0 » » » ∆H = T * ∆S as shown in the graph before According to Sizmann ∆S should be a function of the difference of gaseous moles (n) of both sides of the reaction Since entropy is generated when condensed matter is converted to gas We studied some reactions and found: ∆S / (kJ/mol) = 0.876 * n + 0.631 WG C: Physical Limits / Reaction Enthalpy

  9. WG C: Physical Limits / Reaction Enthalpy Difference in entopy of some reactions as a function of additional moles of gas released ∆S / (kJ/mol) = 0.876 * n + 0.631

  10. WG C: Physical Limits / Reaction Enthalpy Enthalpy of reaction as a function of temperature and the difference of gaseous moles

  11. WG C: Physical Limits / Reaction Enthalpy List of reactions studied:

  12. „New“ Annex / Extension • Whyshouldtheworkof Annex 24 becontinued? • An international networkofexpertshasbeenestablished (ECES/SHC, Material/System…) • „Unknown“ R&D demandcouldbeidentified e.g. testandchracterization, theoreticallimits (economicallimits?) • New promising classesofmaterialsarecurrentlyunderinvestigation, like solid-solid PCM or MOFs • The identification of material requirements for relevant applications, by means of numerical simulation of storage technologies, using the simulation modules developed e.g. in Phase I could now start.

  13. „New“ Annex / Extension

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