Abstract
The efficiency of industrial processes can be increased by balancing steam production and
consumption with a Ruths steam storage system. The capacity of this storage type depends strongly
on the volume; therefore, a hybrid storage concept was developed, which combines a Ruths steam
storage with phase change material. The high storage capacity of phase change material can be very
advantageous, but the low thermal conductivity of this material is a limiting factor. On the contrary,
Ruths steam storages have fast reaction times, meaning that the hybrid storage concept should
make use of the advantages and compensate for the disadvantages of both storage types. To answer
the question on whether this hybrid storage concept is economically feasible, a non-linear design
optimization tool for a hybrid storage system is presented. From a preliminary approximation, the
results show that the costs of hybrid storage can be reduced, in comparison to a Ruths steam storage
with the same storage capacity. Furthermore, a possible hybrid storage design for a real industrial
implementation is discussed. Based on further analyses, it was shown that under certain conditions,
the retrofitting of a conventional Ruths steam storage to a hybrid storage can be advantageous and
cost-effective, compared to an additional Ruths steam storage.
Original language | German |
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Pages (from-to) | 1-25 |
Number of pages | 25 |
Journal | Energies |
Volume | 12 |
Issue number | 898 |
DOIs | |
Publication status | Published - 2019 |
Research Field
- Efficiency in Industrial Processes and Systems