Exergy and exergoeconomic assessment of hydrogen and cooling production from concentrated PVT equipped with PEM electrolyzer and LiBr-H2O absorption chiller

A novel solar based combined system is proposed to produce hydrogen and cooling. The presented cogeneration system is analyzed in detail from the viewpoints of exergy and exergoeconomic (exergy based economic analysis). The proposed system includes a concentrated PVT (CPVT), a single effect LiBr-H2O...

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Bibliographic Details
Published inInternational journal of hydrogen energy Vol. 43; no. 2; pp. 622 - 633
Main Authors Akrami, Ehsan, Nemati, Arash, Nami, Hossein, Ranjbar, Faramarz
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 11.01.2018
Subjects
Cogeneration
Concentrated PV
Exergoeconomic
Exergy
Hydrogen production
LiBr-H2O absorption chiller
Concentrated PV
Exergoeconomic
Exergy
Cogeneration
LiBr-H2O absorption chiller
Hydrogen production
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Summary:A novel solar based combined system is proposed to produce hydrogen and cooling. The presented cogeneration system is analyzed in detail from the viewpoints of exergy and exergoeconomic (exergy based economic analysis). The proposed system includes a concentrated PVT (CPVT), a single effect LiBr-H2O absorption chiller and proton exchange membrane electrolyzer (PEM). Produced electrical power is consumed in the PEM electrolyzer to split water into oxygen and pure hydrogen while heat removal from the CPVT is done by the absorption chiller to guarantee its better performance. Second law analysis showed that, among the three different parts of the system, the most part of exergy destruction refers to the CPVT followed by absorption chiller unit and PEM electrolyzer. Also, it is observed that, among the absorption units' components, the highest percent of exergy destruction belongs to the generator which absorbs the heat from the CPVT. Moreover, exergoeconomic analysis revealed that the most important unit from the viewpoint of economic is the CPVT with the capital investment cost of 0.08946 $/h and an exergoeconomic factor of 28.82%. •A solar based energy system is presented in order to produce hydrogen and cooling.•Exergy and exergoeconomic principles is applied to presented system.•The system components are listed in the order of cost descending.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2017.11.007