ORC 반경류터빈의 예비설계프로그램 개발 및OTEC용 반경류터빈의 설계
The development of a preliminary designing program for ORC radial inflow turbines and the design of the radial inflow turbine for the OTEC
0
조회
0
다운로드
4
인용
0
참고문헌
키워드
초록
본 연구의 목적은 ORC(Organic Rankine Cycle) 반경류터빈의 설계기법을 확립하는 것이다. 이를 위하여 반경류터빈의 예비설계프로그램인 RTDM(Radial Turbine Design Modeler) Ver.2.1를 개발하였다. RTDM Ver.2.1의 정확성을 검증하기 위해 R32를 이용한 200kW급 OTEC(Ocean Thermal EnergyConversion)용 반경류터빈을 설계하였고 이에 대해 CFD(Computational Fluid Dynamics) 수치해석을 수행하였다. 그 결과 RTDM Ver.2.1의 정확성은 설계한 반경류터빈의 전엔탈피 강하를 기준하여 약 94.6%로나타났다. 본 연구에서는 반경류터빈의 설계요구조건인 출력조건과 로터출구조건을 충족시키기 위해 질량유량조정 방법을 도입하였다. 이에 따라 RTDM Ver.2.1을 이용하여 설계한 200kW급 OTEC용 반경류터빈의 질량유량은 21.2kg/s이며 이 때 Total to Total과 Total to Static 효율은 각각 89.8%, 85.3%이다.
Abstract
The purpose of this study is to establish the designing method of ORC(Organic Rankine Cycle) radialinflow turbines. RTDM(Radial Turbine Design Modeler) Ver.2.1 which is a preliminary design program ofradial inflow turbines was developed to achieve this purpose. The 200kW-class radial inflow turbine forOTEC(Ocean Thermal Energy Conversion) was designed by using the RTDM Ver.2.1 and CFD(ComputationalFluid Dynamics) simulation was performed to verify the accuracy of RTDM Ver.2.1. With the result of simulation,the accuracy of RTDM Ver.2.1 was almost 94.6% based on the designed total enthalpy drop of the radialinflow turbine. Strategy of adjusting the mass flow rate was adopted on this study to satisfy the requirementsof its power and rotor outlet`s conditions for the designed radial inflow turbine. The mass flow ratewas consequently increased to 21.2 kg/s for the designed 200kW-class radial inflow turbine for OTEC, andthen Total to total and Total to static efficiency are 89.8% and 85.36% respectively.
참고문헌 (12)
- 모장오, "암모니아 작동유체를 이용한 해수온도차발전용 8kW급 구심터빈의 설계 및 CFD 성능해석", 한국마린엔지니어링학회지, 36(8), pp.1030~1035 (2012), 한국마린엔지니어링학회[DOI]
- 차상원, "해양온도차발전 Closed and Regeneration Cycle의 기본 정특성", 한국마린엔지니어링학회지, 36(8), pp.1151~1157 (2012), 한국마린엔지니어링학회[DOI]
- 모장오, "베인노즐 출구각도에 따른 100kW급 구심터빈의 성능 및 내부유동의 영향", 한국마린엔지니어링학회지, 35(6), pp.757~764 (2011), 한국마린엔지니어링학회
- 모장오, "선박 폐열을 이용한 100㎾급 구심터빈 공력설계 및 CFD에 의한 성능해석", 한국마린엔지니어링학회지, 35(2), pp.175~181 (2011), 한국마린엔지니어링학회
- "List of Refrigerants"[URL]
- Watanabe, "Effect of dimensional parameters of impellers on performance characteristics of a ra-dial inflow turbine", Trans American Society of Mechanical Engineers Journal of Engineering for Power, 93(1), pp.81~102 (1971)
- Computer Program for Design Analysis of Radial Inflow Turbines, "A. Glassman", NASA, ~, pp.Technical Note TN D-8164 (1976)
- A. Simpson, "Numerical and experimental study of the performance effects of varying vaneless space and vane solidity in radial inflow turbine stators", Proceedings of American Society of Mechanical Engineers Turbo Expo 2008, 6, pp.1495~1505 (2008)
- Carlos A. M. Ventura, "Preliminary design and performance estimation of radial inflow turbines: An automated ap-proach", Trans American Society of Mechanical Engineers Journal of Fluids Engineering, 134(3), pp.0311021.1~0311021.13 (2012)
- Ronald H. Aungier, "Turbine Aerodynamics, Axial-flow and Radial-inflow turbine Design and Analysis" (2006), American Society of Mechanical Engineers press
- W. Tabakoff, "Flow meas-urements in a turbine scroll", Trans American Society of Mechanical Engineers Journal of Fluids Engineering, 201(3), pp.290~296 (1980)
- Nicholas C. Baines, "Axial and Radial Turbines" (2003), Concepts NREC