Core of the test facility
Core of the test fa­cil­i­ty
Image 1/2, Credit: DLR (CC BY-NC-ND 3.0)

Core of the test facility

Core of the test fa­cil­i­ty HOTREG is a sol­id mat­ter ac­cu­mu­la­tor for op­er­a­tion with hot air at ad­justable pres­sure
The approximately 5 m high solids storage tank of the HOTREG
The ap­prox­i­mate­ly 5 m high solids stor­age tank of the HOTREG
Image 2/2, Credit: DLR (CC BY-NC-ND 3.0)

The approximately 5 m high solids storage tank of the HOTREG

The ver­ti­cal­ly sus­pend­ed, ap­prox. 5 m high solids stor­age tank of the HOTREG test fa­cil­i­ty can be quick­ly and eco­nom­i­cal­ly con­vert­ed for var­i­ous test se­tups for dif­fer­ent test pur­pos­es.

The large-scale facility of the DLR Institute of Engineering Thermodynamics in Stuttgart is used for the development of new thermal storage system based on directly flowing solids. Different storage structures, operating modes, storage materials, isolation structures and electric heating concepts for high-temperature applications above 500 degrees Celsius are being tested for this purpose.

The operating range of the system allows a high level of flexibility in test operation, as all of the decisive operating parameters, such as temperature, pressure, throughput and humidity, are variable across a wide range.

The core element of the system is a solid storage tank for operation with hot air at adjustable pressure. The vertically suspended storage container, which is about 5 metres tall, contains a replaceable inner container. A heating component integrated into the loading line allows the investigation of new power-to-heat concepts for the external heating of the fixed bed to a pilot plant scale. The testing of power-to-heat solutions in combination with high-temperature storage provides conceptual proof of functionality and operating behaviour.

Contact
  • Volker Speelmann
    Head of Cen­tral Ex­pen­di­ture Man­age­ment
    Ger­man Aerospace Cen­ter (DLR)
    Telephone: +49 2203 601-4103
    Fax: +49 2203 601 4115
    Linder Höhe
    51147 Cologne
    Contact
  • Stefan Zunft
    Ger­man Aerospace Cen­ter (DLR)
    In­sti­tute of En­gi­neer­ing Ther­mo­dy­nam­ics
    Ther­mal Pro­cess Tech­nol­o­gy
    Telephone: +49 711 6862-601
    Pfaffenwaldring 38-40
    70569 Stuttgart
    Contact

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