English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In this paper the transient modeling of heat recovery steam generator in purging time was considered. In purging time, compressed air from the gas turbine was used to purge a combustible gas from heat recovery steam generator. During this time; steam condensate was formed in the superheater stage which should be drained completely to avoid some problems such as deformation of superheaters. Because of this reason, estimation of drain formation is essential to avoid this problem. In this paper an energy model was provided and this model was solved by MATLAB software. Average model error is about 5%. Results show that, during purge time, steam temperature was decreased from 502 °C (superheater 2), 392 °C (superheater1), and 266 °C (Evaporators 1 and 2) to 130 °C, 130 °C and 220 °C, respectively, and also steam pressure was decreased from 52 bar to 23 bar during purge time. At end of purge time, condensate formation was about 220 (l) when inlet gas temperature was equal to 100 °C and purge gas mass flow rate was equal to 386.86 kg/s.

Estimation of condensate mass flow rate during purging time in heat recovery steam generator of combined cycle power plant