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Contents

Performance evaluation of ocean thermal energy conversion(OTEC) stabilization based on risk analysis / Seungtaek Lim ; Hoseang Lee ; Jiwon Yoon ; Hyeonju Kim 1

Abstract 1

1. Introduction 1

2. Hazard analysis 2

2.1. Hazard analysis of MW-Scale OTEC 2

3. System performance analysis of OTEC 5

3.1. Closed-type OTEC system 5

3.2. Design of an MW-scale OTEC system 6

4. Simulation results of hazard occurrence in OTEC 7

4.1. Performance change with respect to hazard circumstances 7

5. Results of OTEC Simulation with improved operation and control system 8

5.1. Refrigerant leakage 8

5.2. Fracture and loss of riser 9

6. Conclusion 9

Author Contributions 10

References 10

초록보기

Research and development of OTEC, a renewable energy power generation facility using seawater heat, is underway worldwide, and the development of a demonstration plant has been promoted in Korea. However, for the commercialization of OTEC, alternative operating scenarios must be derived for various environmental changes. Therefore, preemptively identifying the risk factors of the system, analyzing the effects of the system, establishing control items, and verifying the results through simulation are necessary.

This study proposes a method to minimize risk factors along with a risk analysis of the risk factors of MW-scale OTEC, such as refrigerant leakage and riser loss. The selected OTEC was designed for 1070 kW-class facilities, and 36.6% of the total power is consumed by seawater pumps and refrigerant pumps. The refrigerant was assumed to be leaked owing to the opening of the valve to the top of the refrigerant tank, and the performance change was confirmed by assuming that the refrigerant leaked at an average rate of approximately 21 kg/s. In addition, the riser loss assumed a rapidly changing deep water temperature, and the system was operated to stop when the deep water temperature increased up to 18°C.

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기사명 저자명 페이지 원문 목차
Performance evaluation of ocean thermal energy conversion(OTEC) stabilization based on risk analysis Seungtaek Lim, Hoseang Lee, Jiwon Yoon, Hyeonju Kim p. 1-11

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Resonant frequency tuning of wave energy converters using variable moment of inertia Seon-Jun Jang, Byeong-Ryong Kim p. 12-15

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(A) study on the effect of dynamic material strain on the dynamic crushing behavior of steel structures subjected to impact loads Young Il Park, Jin-Seong Cho, Jeong-Hwan Kim p. 16-22

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(A) proposal for robust control performance on cascade control using IMC-based PID control and genetic algorithm Soon-kyu Hwang, Byung-gun Jung p. 23-33

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[ICACE2022] Prediction of container throughout of Qingdao port using optimized echo state network and improved particle swarm optimization Zitong Qu, Cuong Truong Ngoc, Bao Long Le Ngoc, Seungpil Lee, Hwanseong Kim p. 34-41

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(An) experimental study on the effect of plastic sheet thickness on gas explosion load profiles generated in a vented cylindrical chamber Soung Woo Park, Hyun Ho Lee, Jeong Hwan Kim, Jung Kwan Seo p. 42-51

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참고문헌 (17건) : 자료제공( 네이버학술정보 )

참고문헌 목록에 대한 테이블로 번호, 참고문헌, 국회도서관 소장유무로 구성되어 있습니다.
번호 참고문헌 국회도서관 소장유무
1 L. A. Vega, Ocean Thermal Energy Conversion, Meyers R. A. (eds) Encyclopedia of Sustainability Science and Technology, New York, USA: Springer, 2012. 미소장
2 H. S. LEE, S. W. Cha, Y. G. Jung, B. S. Choi, and H. J. Kim, “Design and experiment of the 20kW OTEC plant,”Proceedings of KAOSTS Spring Conference, pp. 2448-2452, 2014 (in Korean). 미소장
3 S. T. Lim, H. J. Kim, and H. S. Lee, “Dynamic simulation of performance change of MW-class OTEC according to seawater flow rate,” Journal of the Korean Society for Power System Engineering, vol. 23, no. 1, pp. 48-56, 2019(in Korean). 미소장
4 Y. J. Kwon, D. H. Jung, and H. J. Kim, “Design of riser in 1MW OTEC system mounted on floating barge,” Journal of the Korean Science for Marine Environment & Energy, vol. 18, no. 1, pp. 22-28, 2015 (in Korean). 미소장
5 J. B. Seo, J. H. Moon, H. S. Lee, and H. J. Kim, “Performance evaluation and modification plan of the 1MW OTEC turbine,” Korean Science for Marine Environment & Energy Fall Conference, pp. 147-148, 2019 (in Korean). 미소장
6 Graphic products staff, Hazard Analysis Risk Assessment, https://www.graphicproducts.com/articles/hazardanalysis-risk-assessment/ Accessed Date. 24.11.2022. 미소장
7 International Organization for Standardization, Space Systems Risk Management, ISO 17666, 2016. 미소장
8 S. H. Park, J. Oh, S. Cho, K. Kang, C. Min, and J. -Y. Jung, “Reliability evaluation of conceptual design for the dehydration package,” Journal of Mechanical Science and Technology, vol. 32, pp. 5263-5271, 2018. 미소장
9 H. Noh, K. Kang, C. Huh, S. -G. Kang, and Y. Seo, “Identification of potential hazardous events of unloading system and CO2 storage tanks of an intermediate storage terminal for the Korea clean carbon storage project 2025, International Journal of Safety and Security Engineering, vol. 8, no. 2, pp. 258-265, 2018. 미소장
10 X. -Y. Zhou, Z. -J. Liu, F. -W Wang, Z. -L. Wu, and R. -D. Cui, “Towards applicability evaluation of hazard analysis methods for autonomous ships,” Ocean Engineering, vol. 214, pp. 1-19, 2020. 미소장
11 Korea Research Institute of Ships & Ocean Engineering, Development of the utilization technology of deep seawater thermal energy (1 MW OTEC plant) Report, 2015. 미소장
12 S. -H. Oh and S. -W. Kim, Subsystem hazard analysis on an offshore waste disposal facility, International Journal of Environmental Research and Public Health, vol. 17, no. 21, p. 7755, 2020. 미소장
13 N. Chemmangattuvalappil and S. J. C. E. P. S. Chong, Basics of process simulation with Aspen HYSYS, Chemical Engineering Process Simulation, p. 233, 2017. 미소장
14 S. T. Lim, H. S. Lee, J. H. Moon, and H. J. Kim, “Simulation data of regional economic analysis of otec for applicable area,” Processes, vol. 8, no. 9, p. 1107, 2020. 미소장
15 W. L. Luyben, Liquid level control: Simplicity and complexity, Journal of Process Control, vol. 86, pp. 57-64, 2020. 미소장
16 R. Adiputra and T. Utsunomiya, “Stability based approach to design cold-water pipe (CWP) for ocean thermal energy conversion (OTEC),” Applied Ocean Research, vol. 92, 2019. 미소장
17 M. L. Syamsuddin, A. Attamimi, A. P. Nugraha, S. Gibran, A. Q. Afifah, and N. Oriana, “OTEC potential in the Indonesian seas,” Energy Procedia, vol. 65, pp. 215-222, 2015. 미소장

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