A Preliminary Study on Direct Ethanol SOFC for Marine Applications

• 영문명: A Preliminary Study on Direct Ethanol SOFC for Marine Applications
• 발행기관: 한국항해항만학회
• 저자명: 류보림(Bo Rim Ryu) To Thi Thu Ha 강호근(Hokeun Kang)
• 간행물 정보: 『한국항해항만학회지』제48권 제2호, 125~136쪽, 전체 12쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2024.04.30

영문 초록

This research presents an innovative integrated ethanol solid oxide fuel cell (SOFC) system designed for applications in marine vessels. The system incorporates an exhaust gas heat recovery mechanism. The high-temperature exhaust gas produced by the SOFC is efficiently recovered through a sequential process involving a gas turbine (GT), a regenerative system, steam Rankine cycles, and a waste heat boiler (WHB). A comprehensive thermodynamic analysis of this integrated SOFC-GT-SRC-WHB system was performed. A simulation of this proposed system was conducted using Aspen Hysys V12.1, and a genetic algorithm was employed to optimize the system parameters. Thermodynamic equations based on the first and second laws of thermodynamics were utilized to assess the system's performance. Additionally, the exergy destruction within the crucial system components was examined. The system is projected to achieve an energy efficiency of 58.44% and an exergy efficiency of 29.43%. Notably, the integrated high-temperature exhaust gas recovery systems contribute significantly, generating 1129.1 kW, which accounts for 22.9% of the total power generated. Furthermore, the waste heat boiler was designed to produce 900.8 kg/h of superheated vapor at 170 ℃ and 405 kPa, serving various onboard ship purposes, such as heating fuel oil and accommodations for seafarers and equipment.

목차

1. Introduction

2. Materials and methods: System description

3. Models and methods

4. Materials and methods

5. Materials and methods: Modeling verification

6. Results and discussions

7. Conclusions

Acknowledgement

References

키워드

ethanol SOFC organic Rankine cycles waste heat recovery thermodynamics analysis