Exergoeconomic investigation of flue gas driven ejector absorption power system integrated with PEM electrolyser for hydrogen generation
Küçük Resim Yok
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study aims to investigate the thermodynamic and economic aspects of a low temperature flue gas driven advanced absorption power cycle (AAPC) integrated to PEM electrolyser (PEME) for hydrogen and oxygen production. Flue gases from a small-scale coal fired power plant are utilized to energize the generator of the AAPC system. Produced power drives the PEME for primarily hydrogen generation, and oxygen as a byproduct. Use of ejector enhances the power production in the turbine favoring plant performance. The present integrated system produces daily amounts of similar to 1.15 kg H-2 and similar to 4.59 kg O-2 at 140 degrees C maximum cycle temperature with a capacity factor of 85%, 30 years of plant life and 5% annual interest rate. Cost of electricity and hydrogen are found to be 0.049 $/kWh and 2.43 $/kg, with overall energy and exergy efficiencies of 5.9% and 17.8%, respectively. The highest cost contributors are the APC turbine and the PEM electrolyser where these two accounts for almost 94% of total plant cost. Total cost of the plant is found to be similar to$61200. Cost of produced hydrogen shows promising results compared to those of electrolysis-based hydrogen production systems. (C) 2018 Elsevier Ltd. All rights reserved.
Açıklama
Anahtar Kelimeler
Absorption power cycle, Ejector, Exergy efficiency, PEM electrolyser, Exergoeconomic analysis, Hydrogen cost
Kaynak
Energy
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
163
