IEA Task 42 Compact Thermal Energy Storage 2nd period
The aim is, within the International Energy Agency SHC Programme Task 42 project "Compact Energy
Storage: Material Development and System Integration 2nd period", to evaluate the suitability of seasonal
heat storages based on a salt hydrate with stable supercooling for solar heating systems which can fully
cover new building's yearly heat demand.
The project is the Danish contribution to the IEA SHC Programme Task 42 project "Compact Energy
storage: Material Development and System Integration, 2nd period".
A seasonal heat storage based on sodium acetate trihydrate with stable supercooling marketed by the
German company H.M. Heizkörper GmbH & Co. KG will be evaluated in terms of thermal performance and
economy by means of detailed experimental and theoretical investigations.
A seasonal heat storage based on a salt water mixture consisting of 58% sodium acetate and
42% water is currently being developed and evalueted by Technical University of Denmark, Graz University
of Technology, Nilan A/S and Velux A/S in the COMTES project supported by EU. This storage will be
compared to the German heat storage.
Calculations of the thermal performance of solar heating systems with the two above mentioned heat
stores will be carried out with validated simulation models for the two heat stores. The calculations will
show how the designs of the solar heating systems including the seasonal heat stores will influence the
size of the systems needed to fully cover the yearly heat demand of new buildings.
Based on the calculations and on evaluation of the economic conditions for the two heat stores the
optimum design and the suitability of the two heat stores will be elucidated.
Valuable knowledge on how to design compact long term heat storages has been gained. The project included cooperation with the Danish company Nilan A/S and the German company H.M. Heizkörper. These companies can utilize the gained knowledge in their efforts to develop improved compact long term heat storages. However, more research and development activities are needed before such heat storages will be economically attractive
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Dokumenter
Participants
Partner | Subsidy | Auto financing |
---|---|---|
Danmarks Tekniske Universitet (DTU) | 2,80 mio. DKK | 0,49 mio. DKK |