Energy and exergy analyses of a solid oxide fuel cell-gas turbine-organic rankine cycle power plant with liquefied natural gas as heat sink

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Ahmadi M.H., Sadaghiani M.S., Pourfayaz F., Ghazvini M., Mahian O., Mehrpooya M., Wongwises S.

ผู้เผยแพร่: MDPI

ปีที่เผยแพร่ (ค.ศ.): 2018

วารสาร: Entropy (1099-4300)

Volume number: 20

Issue number: 7

หน้าแรก: 1

หน้าสุดท้าย: 22

จำนวนหน้า: 22

นอก: 1099-4300

eISSN: 1099-4300

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050291747&doi=10.3390%2fe20070484&partnerID=40&md5=94d54658853518de7df49b499f7dd911

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

An exergy analysis of a novel integrated power system is represented in this study. A Solid Oxide Fuel Cell (SOFC), which has been assisted with a Gas Turbine (GT) and Organic Rankine Cycle (ORC) by employing liquefied natural gas (LNG) as a heat sink in a combined power system is simulated and investigated. Initially in this paper, the integrated power system and the primary concepts of the simulation are described. Subsequently, results of the simulation, exergy analysis, and composite curves of heat exchangers are represented and discussed. The equations of the exergy efficiency and destruction for the main cycle's units such as compressors, expanders, pumps, evaporators, condensers, reformers, and reactors are presented. According to the results, the highest exergy destruction is contributed to the SOFC reactor, despite its acceptable exergy efficiency which is equal to 75.7%. Moreover, the exergy efficiencies of the ORC cycle and the whole plant are determined to be 64.9% and 39.9%, respectively. It is worth noting that the rational efficiency of the integrated power system is 53.5%. Among all units, the exergy efficiency of the LNG pump is determined to be 11.7% the lowest exergy efficiency among the other investigated components, indicating a great potential for improvements. ฉ 2018 by the author.

คำสำคัญ

Exergy destruction, Exergy efficiency, LNG, Organic Rankine cycle, Solid oxide fuel cell