Objectives

The aim of the CREATE project was to develop a compact thermal energy storage system that is able to provide renewable heat over the entire year. The CREATE system was developed as an advanced thermal storage system based on Thermo-Chemical Materials (TCMs), that enables economically affordable, compact and loss-free storage of heat in existing buildings. The system consists of several storage modules containing salt, which is hydrated (charged) in summer and dehydrated (discharged) in winter.

CREATE Project introduction

Storage system design

The create storage system design consist of the following components:

Heat battery for seasonal storage

•    Absorber modules with thermochemical material

•    Central evaporator/condenser with a water reservoir

Buffer for diurnal storage

Heat pump

Solar thermal collector

Ground source

Principle

Thermochemical storage (TCS) is a reversible system that releases or absorbs thermal energy when two substances/components are combined or separated. If the components are stored separately, the corresponding reaction can be used to store heat. The basis for thermochemical heat storage is therefore the selection of a reaction system suitable for the desired storage temperature.

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