Open AccessEnergy And Exergy Assessment of North Refineries Company (NRC) Steam Cycle Based on Air Mass Flowrate of Main Condenser
Author(s) -
Waad Salih,
Aadel A. R. Alkumait,
Hameed J. Khalaf
Publication year - 2021
Publication title -
mağallaẗ tikrīt li-l-ʻulūm al-handasiyyaẗ/tikrit journal of engineering sciences
Language(s) - English
Resource type - Journals
eISSN - 2312-7589
pISSN - 1813-162X
DOI - 10.25130/tjes.28.3.05
Subject(s) - exergy , condenser (optics) , engineering , mass flow rate , exergy efficiency , environmental science , oil refinery , energy consumption , process engineering , waste management , environmental engineering , thermodynamics , light source , physics , electrical engineering , optics
The present work depends on the previous energy and exergy analysisstudy for a steam cycle of North Refineries Company (NRC)/Baiji, Iraq,which was conducted at real and rated operating loads. After the resultsof that study are presented, this current study is conducted and aimed toproduce the engineering solutions for improving the cycle performancethrough studying the operational choices that are actually available in theplant as investigating the effect of increasing the air mass flow rate in themain condenser of the cycle. The calculations were done by using theMATLAB program. The results showed that increasing the air mass flowrate or increasing the number of fans in service from 8 to 14 fans willreduce the energy losses in the main condenser and in the cycle. Theenergy loss reduction can be enhanced in the improvement of the energyefficiency by raising it from 30.11 % to 48.61 % at real load and from 33.49% to 48.93 % at rated load. On the other hand, the exergy analysis showedthat the exergy destructions for the main condenser and for the cyclewould decrease if the number of fans increased. This decreasing of exergydestruction in the main condenser will raise the exergy efficiency from21.95 to 27.06 % at real load and from 21.18 % to 25.45 % at rated load.