Control Strategy and Design for a Packed-Bed Thermochemical Heat Storage Reactor
METADATA ONLY
Loading...
Author / Producer
Date
2019-11
Publication Type
Conference Paper
ETH Bibliography
yes
Citations
Altmetric
METADATA ONLY
Data
Rights / License
Abstract
The concept of a controllable combined sensible-thermochemical thermal energy storage for utilization with concentrated solar power plants is presented. An encapsulated thermochemical storage utilizing reversible gas-solid reactions is coupled to a packed-bed sensible storage using rocks as storage media. The thermal decomposition of manganese oxide is chosen as a demonstration reaction. A simplified heat transfer model of the thermochemical section is implemented in Simulink. The equations that govern thismodel are presented. Thisimplementationallows for rapid iterationsto find a controller design that stabilizes the storage outflow temperature shows robust and exact performanceover a wide range of operating parameters. The controller consists of feedforward and feedback portions with integrator windup protection. This controller design is subsequentlyported to an existing simulation framework that resolves the domain to a higher degree of accuracyand implements temperature-dependent material properties. The resulting controller-TCS combination is limited primarily by finite reaction rates and heat transfer to the surrounding heat transfer fluid. For all practical applications, the thermochemical section is able to stabilize (or actively control) the combined storage outflow temperature.
Permanent link
Publication status
published
External links
Book title
Proceedings of the ISES Solar World Conference 2019 and the IEA SHC Solar Heating and Cooling Conference for Buildings and Industry 2019
Journal / series
Volume
Pages / Article No.
1145 - 1150
Publisher
International Solar Energy Society
Event
Solar World Congress 2019 (SWC 2019)
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Solar; Thermal energy storage; Thermochemical storage; Controller design
Organisational unit
03530 - Steinfeld, Aldo (emeritus) / Steinfeld, Aldo (emeritus)
Notes
Poster presentation P4.19.
Funding
Related publications and datasets
Is part of: