Heat2Share

In the project ”Integration of sorptive heat storage in a biogas plant for the decentralized heat supply of Barenthin village”, a modularized, cascaded thermochemical heat storage shall be conceptually designed and built – based on the previous and completed research projects MoGeSoWa and COMTES.

The thermochemical heat storage will be integrated into the heat supply system of Barenthin village (north of Berlin). The further development of the thermochemical heat storage is based on the combination of the methods which were successfully developed and tested in the previous projects. The heat storage process is based on closed adsorption. A composite of activated carbon and calcium chloride (CaCl2) is used as thermochemical storage material, characterized by a high energy storage density even at lower operational temperatures. The corrosive behavior of the material is an issue.

Therefore, an important subject of research is to optimize the heat and mass transfer in the storage module and to increase the corrosion resistance in the system. Ensuring an optimal heat transfer as well as the resulting flexible adaptation to specified requirements related to storage capacity and transmission performance are further challenges.

Storage testing under realistic conditions in an existing heat supply system is one of the main objectives in this project. The possibility is shown to achieve a medium-term shift away from using fossil fuels such as crude oil and natural gas.

10/2020 – 09/2023

HTW Berlin – Hochschule für Technik und Wirtschaft Berlin, University of Applied Sciences, Berlin, Germany (Coordination)

B&O Gebäudetechnik GmbH & Co. KG, Berlin, Germany

BEB BioEnergy Berlin GmbH, Berlin, Germany

ZeoSys Energy GmbH, Berlin, Germany

PTM Pneumatik Berlin GmbH, Berlin, Germany

IWU Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany

The research project ”Heat2Share – Integration of sorptive heat storage in a biogas plant for the decentralized heat supply of Barenthin village” is funded by the Federal Ministry for Economic Affairs and Climate Action (BMWK) via Project Management Jülich (PtJ) under grant number 03EN3018B.