[논문]Precise infrared thermometry with considering background radiation for gas turbine air cooling application

Shin, Dong Hwan; Kim, Mingeon; Kim, Jin Sub; Lee, Bong Jae; Lee, Jungho

doi:10.1016/j.ijthermalsci.2020.106534

Abstract ▼ AI-Helper

Abstract The turbine inlet temperature keeps increasing as high-efficient gas turbines have been developed for the last decades. The increase of turbine inlet temperature makes the turbine blades being exposed in thermally severe conditions, leading to thermal damage. The thermal management with ad...

Abstract The turbine inlet temperature keeps increasing as high-efficient gas turbines have been developed for the last decades. The increase of turbine inlet temperature makes the turbine blades being exposed in thermally severe conditions, leading to thermal damage. The thermal management with advanced cooling techniques is thus necessary to protect turbine blades from thermal deformations. For properly evaluating the air-cooling effects on turbine blades, the more accurate surface temperature measurement must be preceded. Infrared thermometry has often been employed for high-temperature turbine blades due to its convenience. However, background radiation must be carefully considered if the surrounding environment is at a higher temperature than the surface to be measured, as in the case of a gas turbine blade. In addition, the spectral emittance of an object should also be known a priori. In this study, we propose an accurate measurement scheme of infrared thermometry by properly considering the background radiation from the high-temperature environment as well as the spectral emittance of an object. The accuracy of infrared thermometry was examined for two exemplary surfaces with low and high emittance in a high-temperature wind tunnel. The proposed measurement scheme was found to be in good agreement with the thermocouple measurements within 5% for both surfaces. Highlights An advanced methodology of IR thermometry is developed considering background radiation. The test section is specially designed to minimize the background radiation. The measured normal hemispherical emittance is applied to the temperature conversion method with wavelength. The transpiration cooling shows better cooling performance than the internal cooling. The differential conversion method can be a unique solution that is used in actual gas turbine applications.

Keyword

참고문헌 (19)

Ind. Tech. Rev. Yuri 50 1 2013 Development of 1600 °C-class high-efficiency gas turbine for power generation applying J-type technology, Mitsubishi Heavy
Meas. Sci. Technol. Ekkad 11 957 2000 10.1088/0957-0233/11/7/312 A transient liquid crystal thermography technique for gas turbine heat transfer measurements

상세보기
Int. J. Heat Mass Tran. Schobeiri 45 815 2002 10.1016/S0017-9310(01)00190-9 Prediction of turbine blade heat transfer and aerodynamics using a new unsteady boundary layer transition model

상세보기
Int. J. Heat Mass Tran. Liu 53 5232 2010 10.1016/j.ijheatmasstransfer.2010.07.036 Film cooling performance of converging slot-hole rows on a gas turbine blade

상세보기
Wright vol. 47330 37 2005 Heat Transfer Summer Conference Assessment of steady state PSP, TSP, and IR measurement techniques for flat plate film cooling
Int. J. Heat Mass Tran. Gao 51 2139 2008 10.1016/j.ijheatmasstransfer.2007.11.010 Film cooling on a gas turbine blade pressure side or suction side with axial shaped holes

상세보기
Sensors Khalid 8 5673 2008 10.3390/s8095673 Thermographic phosphors for high temperature measurements: principles, current state of the art and recent applications

상세보기
Int. J. Heat Mass Tran. Kim 47 245 2004 10.1016/j.ijheatmasstransfer.2003.07.008 Influence of shaped injection holes on turbine blade leading edge film cooling

상세보기
Sensors Usamentiaga 14 12305 2014 10.3390/s140712305 Infrared thermography for temperature measurement and non-destructive testing

상세보기
Infrared Phys. Technol. ？vantner 61 20 2013 10.1016/j.infrared.2013.07.005 Non-contact charge temperature measurement on industrial continuous furnaces and steel charge emissivity analysis

상세보기
Infrared Phys. Technol. Manara 80 120 2017 10.1016/j.infrared.2016.11.014 Long wavelength infrared radiation thermometry for non-contact temperature measurements in gas turbines

상세보기
https://www.youtube.com/watch?v=c12Gh8BN0Io, (n.d.).
Vollmer 2017 Infrared thermal imaging: fundamentals, research and applications
Int. J. Heat Mass Tran. Krewinkel 66 706 2013 10.1016/j.ijheatmasstransfer.2013.07.071 A review of gas turbine effusion cooling studies

상세보기
Zhang 2009 Radiometric temperature measurements: I. Fundamentals
Ewing 179 2003 Water in confining geometries Thin Film Water on Insulator Surfaces
J. Quant. Spectrosc. Radiat. Transf. Di Leon 35 337 1986 10.1016/0022-4073(86)90019-1 Infrared absorption by gas mixtures in the 300-850 K temperature range I-4.3 μm and 2.7 μm CO2 spectra

상세보기
1995 Guide to the Expression of Uncertainty in Measurement
J. Mech. Sci. Technol. Lee 31 5113 2017 10.1007/s12206-017-1005-4 Flow visualization of microscale effusion cooling within mainstream boundary layer on a flat plate

상세보기

이 논문을 인용한 문헌

LOADING...

활용도 분석정보

상세보기

다운로드

내보내기

활용도 Top5 논문

해당 논문의 주제분야에서 활용도가 높은 상위 5개 콘텐츠를 보여줍니다.
더보기 버튼을 클릭하시면 더 많은 관련자료를 살펴볼 수 있습니다.

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관 관리번호, 논문명, 대등논문명, 저자 , 저널/프로시딩명, 발행기관, 발행년, 발행언어, 권, 호, 시작페이지, 끝페이지, ISBN, ISSN, 주제분야, 키워드, 초록(한글), 초록(영문), 저자(소속기관)
저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

[해외논문] Precise infrared thermometry with considering background radiation for gas turbine air cooling application

Abstract ▼ AI-Helper

Keyword

참고문헌 (19)

이 논문을 인용한 문헌

연구과제 타임라인

활용도 분석정보

활용도 Top5 논문

관련 콘텐츠

원문 URL 링크

이 논문과 함께 이용한 콘텐츠

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트

연합인증

[해외논문] Precise infrared thermometry with considering background radiation for gas turbine air cooling application

Abstract ▼ AI-Helper

Keyword

참고문헌 (19)

이 논문을 인용한 문헌

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

전체(0) 논문(0) 특허(0) 보고서(0)

활용도 분석정보

활용도 Top5 논문 더보기

관련 콘텐츠

원문 URL 링크

이 논문과 함께 이용한 콘텐츠

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트

활용도 Top5 논문