Development of accelerated PCHE off-design performance model for optimizing power system operation strategies in S-CO2 Brayton cycle

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 46
  • Download : 0
This paper presents the work on developing accurate and computationally efficient PCHE off-design quasi-steady state performance models for both recuperator and pre-cooler in a supercritical CO2 (S-CO2) Brayton cycle respectively to optimize power system operation strategies under off-design conditions. The newly developed model for heat transfer uses an existing Log Mean Temperature Difference (LMTD) method and modifies it to reflect the rapid change of properties in the vicinity of the critical point. In addition, the prediction of frictional pressure drop was implemented to this model. In the performance evaluation, this methodology shows its prediction accuracy to be sufficient. When it comes to the computational resource, the suggested model can accelerate the calculation over two orders of magnitude faster. The developed model is applied to evaluate the performance of the S-CO2 system to establish operation strategies such as inventory control and heater bypass control under off-design conditions.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2019-08
Language
English
Article Type
Article
Citation

APPLIED THERMAL ENGINEERING, v.159

ISSN
1359-4311
DOI
10.1016/j.applthermaleng.2019.113845
URI
http://hdl.handle.net/10203/263982
Appears in Collection
NE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0