Task 42 / Annex 24
Compact Thermal Energy Storage:
Task 42 is a joint Task with the IEA Energy Conservation through Energy Storage (ECES) Programme Task 24.
Thermal energy storage is an important technology for renewable energy systems and energy efficiency. By improving the effectiveness of thermal storage, the effectiveness of all renewable energy technologies that supply heat can be improved.
Particularly for solar thermal systems, thermal energy storage is essential. To reach high solar fractions, it is necessary to store heat (or cold) efficiently for longer periods of time. Until now, no cost-effective compact storage technologies are available to do this. For high solar fraction systems, hot water stores are expensive and require very large volumes of space. Alternative storage technologies, such as phase change materials (PCMs) and thermochemical materials (TCMs) are available on a laboratory scale. However, more research and development is needed before these technologies can be developed into commercial solutions.
In several IEA Annexes , it was concluded that materials are the main bottleneck
for finding effective solutions for compact thermal energy storage, and that
there is a need for new storage materials with a higher specific energy storage
density and lower material cost.
The Task 42/24 started officially January 1, 2009. The planned end date is December 31, 2012. In 2009, the thermal energy storage experts contributing to the Task met 2 times. the first expert meeting was in February in Bad T�lz, Germany. The second meeting was in September in Lleida, Spain. In both meetings, more than 65 experts shared information about their heat storage projects and discussed about the goals, activities and deliverables of the Task.
Please refer to this website for more information.
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please contact one of the Operating Agents.