A parametric study on exergetic sustainability aspects of high-pressure hydrogen gas compression

Mert Ozsaban, Adnan Midilli*

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Özet

This paper presents a parametric study on exergetic sustainability aspects of high-pressure-hydrogen gas compression process in terms of exergy. In this regard, a single stage, two-stage, three-stage and four-stage-hydrogen gas compression processes have been considered to make a parametric evaluation in terms of the exergetic sustainability parameters including i) exergetic efficiency, ii) waste exergy ratio, iii) exergy recoverability ratio, iv) exergy destruction ratio, v) environmental effect factor, vi) exergetic sustainability index. Here, hydrogen is assumed to be a real gas because of higher pressures, and therefore, its compressibility factor is taken into account thorough the calculations. Accordingly, it is noticed that increasing stage number (ranging 1 to 4) and hydrogen gas inlet pressure (from 1 to 200 bar) decrease waste exergy ratio (from 0.853 to 0.058) and environmental effect factor (from 5.789 to 0.061) while going up exergetic sustainability index (from 0.173 to 16.337). However, increasing compressor-outlet pressure of hydrogen gas (ranging from 200 to 900 bar) reduces exergetic sustainability index (from 7.472 to 1.069) while going up waste exergy ratio (from 0.118 to 0.483), exergy destruction ratio (from 0.089 to 0.253), environmental effect factor (from 0.134 to 0.936), and exergy recoverability ratio (from 0.029 to 0.230).

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)5321-5334
Sayfa sayısı14
DergiInternational Journal of Hydrogen Energy
Hacim41
Basın numarası11
DOI'lar
Yayın durumuYayınlandı - 22 Mar 2016
Harici olarak yayınlandıEvet

Bibliyografik not

Publisher Copyright:
© 2016 Hydrogen Energy Publications, LLC.

Finansman

We would like to thank Nigde University in Turkey for technical support and Recep Tayyip Erdoğan University in Turkey for academic support. Also we are very thankful to Prof. Dr. Ibrahim Dincer from UOIT, Canada for scientific support.

FinansörlerFinansör numarası
Nigde University in Turkey
UOIT, Canada

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