지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 김주형
- 발행연도
- 2016
- 저작권
- 인하대학교 논문은 저작권에 의해 보호받습니다.
이용수0
이 논문의 연구 히스토리 (2)
- 이 논문의 후속연구가 궁금하신가요?
- 연관 학술논문 또는 학술발표를 통해 보다 발전된 연구결과를 확인하실 수 있습니다.
- 이 논문의 연구 히스토리 확인하기
초록· 키워드
오류제보하기
ABSTRACT
Recently, the world energy consumption continuously increases due to industrialization and developed life style. Moreover, the new environmental issue related to the energy crisis and regulation of usage is more critical and will be more important in upcoming future Therefore, the request of renewable energy sources and technology becomes more dominant and gaining much interest to replace the conventional energy sources such as fossil, coal, and gas. The ocean is the largest energy storage from solar. As an infinite renewable energy resource, Ocean Thermal Energy Conversion (OTEC) technology is a renewable clean energy which is able to convert to electric energy stem from the temperature differences of ocean water between surface temperature and deep sea In this thesis, lab scaled and closed cycle based OTEC system was designed and tested to use alternative refrigerant as a low temperature different energy harvester. The source waters as a surface water and a deep sea water were applied from chiller systems by hot and chilled conditions. R-32 and R-134a were selected for working fluid of OTEC system. A 1kW-scroll turbine generator was installed between the evaporator and condenser and operated in order to obtain the maximum efficiency of OTEC system by controlling the temperatures of supplied water.
In order to characterize and optimize OTEC system, EES simulation results were compared to the experiment data. Also to improve the efficiency of OTEC system, extra temperature booster using the solar collectors were designed and installed to the system resulting into the improvement of efficiency of OTEC system. Also adding a regenerator in OTEC system, extra improvement of system efficiency was obtained.
Recently, the world energy consumption continuously increases due to industrialization and developed life style. Moreover, the new environmental issue related to the energy crisis and regulation of usage is more critical and will be more important in upcoming future Therefore, the request of renewable energy sources and technology becomes more dominant and gaining much interest to replace the conventional energy sources such as fossil, coal, and gas. The ocean is the largest energy storage from solar. As an infinite renewable energy resource, Ocean Thermal Energy Conversion (OTEC) technology is a renewable clean energy which is able to convert to electric energy stem from the temperature differences of ocean water between surface temperature and deep sea In this thesis, lab scaled and closed cycle based OTEC system was designed and tested to use alternative refrigerant as a low temperature different energy harvester. The source waters as a surface water and a deep sea water were applied from chiller systems by hot and chilled conditions. R-32 and R-134a were selected for working fluid of OTEC system. A 1kW-scroll turbine generator was installed between the evaporator and condenser and operated in order to obtain the maximum efficiency of OTEC system by controlling the temperatures of supplied water.
In order to characterize and optimize OTEC system, EES simulation results were compared to the experiment data. Also to improve the efficiency of OTEC system, extra temperature booster using the solar collectors were designed and installed to the system resulting into the improvement of efficiency of OTEC system. Also adding a regenerator in OTEC system, extra improvement of system efficiency was obtained.
목차
TABLE OF CONTENTSABSTRACT iTABLE OF CONTENTS iiiABBREVIATION USED vLIST OF FIGURES viiLIST OF TABLES x1. INTRODUCTION 11.1. Research Background 11.2. Objectives of the study 31.3. Technological history of Ocean Energy 41.4. Ocean Thermal Energy Conversion (OTEC) 91.5. OTEC power cycle 102. Design ? Point Analysis of OTEC 152.1. Thermodynamic Efficiency 152.2. Working Fluids 162.3. Improvements of the closed OTEC cycle 202.4. Scroll Expander 223. EXPERIMENTS AND CHARACTERIZATION 253.1. Configuration of Lab-scaled OTEC system 253.2. Components of Lab scaled OTEC system 263.3. Working principle 313.4. Experiment procedure. 354. THE PERFORMANCE ANALYSIS OF OTEC 364.1. Thermodynamic analysis methods 365. RESULT AND DISCUSSION 425.1. Basic performance test of lab scale OTEC system with R22 425.2. Basic performance test of lab scale OTEC system with R-32/R-134a mixture at various mixing ratios. 475.3. Analysis of a regenerative OTEC cycle 526. CONCLUSIONS 57REFERENCES 58OUTCOMES OF RESEARCH 63
최근 본 자료
댓글(0)
0