Steam storage systems for flexible biomass CHP plants - Evaluation and initial model based calculation

Date
2019-08-15
Authors
Greenough, R. M.
Stark, Matthias
Conti, F.
Abdessamad, S.
Zörner, W.
Journal Title
Journal ISSN
ISSN
0961-9534
Volume Title
Publisher
Elsevier
Peer reviewed
Yes
Abstract
Within the present study a novel concept for the demand-oriented power generation of a solid-biomass fueled combined heat and power (CHP) plant is investigated. The integration of a steam storage system into the plants process enables a decoupling of the steam (boiler) and the power generation (steam turbine). By buffering the steam, the power output of the turbine can be adjusted without changing the rated thermal capacity of the plant. Various available storage systems are selected and comparatively evaluated applying the adapted analytic hierarchy process (AHP). The technology assessment revealed that the combination of a steam accumulator and solid concrete storage represents the best suiting option. An initial model based simulation study is performed to identify the fundamental behaviour of this system, integrated in a biomass CHP plant. The operation principle is has proved their technical feasibility and seems to be applicable at a commercial scale. According to the modelling results flexible short term power generation in a time range of up to fifteen minutes is applicable. A load-range of almost the plants rated capacity can be achieved.
Description
The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.
Keywords
CHP, Solid biomass, Steam storage, High temperature storage, Flexible power generation
Citation
Stark, M., Conti, F., Abdessamad, S. Zörner, W. and Greenough, R., (2019) Steam storage systems for flexible biomass CHP plants - Evaluation and initial model based calculation. Biomass and Bioenergy, 128, 105321
Research Institute
Institute of Energy and Sustainable Development (IESD)