Please cite this article as: M. Richter, M. Bouché, M. Linder, Heat transformation based on CaCl 2 /H 2 O -Part A: closed operation principle, Applied Thermal Engineering (2016), doi: http://dx.

In order to increase the efficiency of industrial processes by means of thermal energy storage and upgrade of waste heat in a temperature range of 100 °C -200 °C thermochemical systems are a promising option. The working pair CaCl 2 /H 2 O has been identified as suitable reference system due to the possibility to store thermal energy and perform an upgrade of thermal energy at the same time. As working principle an open mode ̇ volume flow (m 3 h -1 )x water vapor concentration (-)

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