Dynamic simulation of a hybrid once-through and natural circulation Heat Recovery Steam Generator (HRSG)

Yaser Farahani, Ali Jafarian and Omid Mahdavi Keshavar

Energy, 2022, vol. 242, issue C

Abstract: Considering the steam generator startup process and its dynamic response to the stimulations applied in the downstream and upstream cycles is crucial for predicting the system performance. In the present work, a novel hybrid once–through and natural circulation Heat Recovery Steam Generator (HRSG) is numerically simulated to demonstrate how it may improve the performance of a power plant. Dynamic numerical simulation is carried out to show the advantages of hybrid HRSG over natural circulation type. The main focus is to reduce the steam generation startup period via a hybrid once-through and natural circulation HRSG. Results showed that the system reaches the steady-state condition after 60 min for the once-through section compared to the 180 min for the natural circulation section. In other words, the hybrid HRSG can reach 50% of its nominal capacity utilizing only the once-through section just 60 min after startup. After 120 min, the natural circulation section also comes fully online. Additionally, steady-state simulation results showed that in the hybrid HRSG, the drum wall thickness, drum diameter, and weight decreased by 54, 30, and 65% compared to the drum of a natural circulation type.

Keywords: Dynamic simulation; Hybrid heat recovery steam generator; Natural circulation; Once-through (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S036054422103245X
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:242:y:2022:i:c:s036054422103245x

DOI: 10.1016/j.energy.2021.122996

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().