Development of a Wide Range Temperature Pyrometer for Gas Turbine Application

Moon, Hee Koo; Glezer, B.; Mink, B.; Marvin, W.

doi:10.1115/95-gt-126

Cited by 5 publications

(3 citation statements)

References 7 publications

(5 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The wide range infrared pyrometer ( Fig. 4) developed at Solar (Moon et al, 1995) was used to map surface temperature and to obtain the heat transfer coefficient distribution along the airfoil surfaces ( Fig. 4).…”

Section: Fig 2-cooled Nozle Airfoil For Heat Transfer Measurementmentioning

confidence: 99%

Turbine Airfoil External Heat Transfer Measurement in a Hot-Cascade

Zhang¹,

Glezer²

1997

Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration

View full text Add to dashboard Cite

Detailed knowledge of local external heat transfer around a turbine airfoil is critical for an accurate prediction of metal temperature and component life. This paper discusses the results of measurements of the local gas side heat transfer coefficient distribution which were performed in an annular gas turbine vane hot-cascade test facility and provides comparisons with analytical predictions. The steady state tests were performed at simulated engine operating conditions. The tests were conducted on an internally cooled airfoil with the intent to provide close to uniform coolant temperature at the mid-span of the airfoil and also to obtain a high heat flux through the wall, minimizing uncertainty. Internal coolant side heal transfer coefficients were measured through calibration tests outside the cascade by a wire heater. A calibrated infrared pyrometer was used to provide detailed airfoil surface local temperatures and the corresponding external heat transfer coefficients. The airfoil was instrumented with a number of thermocouples for both calibration and temperature measurement. A 12% freestream turbulence was generated by a turbulence grid upstream of the test cascade. The static pressure measured over the test vane agreed well with invicid predictions. Heat transfer coefficients were measured and compared to a TEXSTAN boundary layer code prediction. The influence of Reynolds number and Mach number on the airfoil external heat transfer coefficient were also studied and is presented in the paper.

show abstract

Section: Fig 2-cooled Nozle Airfoil For Heat Transfer Measurementmentioning

confidence: 99%

Turbine Airfoil External Heat Transfer Measurement in a Hot-Cascade

Zhang¹,

Glezer²

1997

Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration

View full text Add to dashboard Cite

show abstract

“…The surface temperatures of the test vane were measured with the inhouse developed pyrometer which has been validated in a previous study (Moon et al, 1995). The pyrometer has a lower surface temperature limit of 230°C unhle commercially available pyrometers that can only measure temperatures above 600°C.…”

Section: Urface Tempe Re and Cooling Effectiveness Maiming With Pyromentioning

confidence: 99%

Application of Advanced Experimental Techniques in the Development of a Cooled Turbine Nozzle

Moon¹,

Glezer²

1996

Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration

Self Cite

View full text Add to dashboard Cite

In spite of very significant progress in analytical and numerical methods during recent years, experimental techniques are still essential tools for the development of cooled turbine nozzles. This paper describes the major elements of the development process for cooled turbine nozzles with a primary emphasis on advanced experimental heat transfer techniques. Thermochromic liquid crystals were used to measure the internal (coolant side) heat transfer coefficients of a practical vane cooling design which has a combination of different heat transfer augmenting devices. A comparison of the results and analytical predictions provided validations of existing correlations which were developed from the generic cases (usually one type of augmenting device). The overall cooling design was evaluated in a full-scale annular hot cascade which maintained heat transfer similarity. The freestream turbulence level was measured with an in-house developed heat flux probe. Cooling effectiveness distribution was evaluated from the surface metal temperatures mapped with an in-house developed wide range temperature pyrometer. The test results led to the fine-tuning of the nozzle vane cooling design.

show abstract

“…Research and development on the application of this measurement technique to gas turbines was reported in the past e.g. by Barber (1969), Rohy and Compton (1973), and in the recent past by Schenk et al (1994) and Moon et al (1995). The principal focus of research work on the use of infrared thermometry in gas turbines in the recent years was the development of computer models for the application and evaluation of this technique e.g.…”

Section: Uses Of Infrared Thermometrymentioning

confidence: 99%

Testing the Model V84.3A Gas Turbine: Experimental Techniques and Results

Boehm

Raake

Regnery

et al. 1996

ASME 1996 Turbo Asia Conference

View full text Add to dashboard Cite

Like its predecessors, Siemens’ first Hybrid Burner Ring® machine (Becker et al., 1995) underwent an extensive experimental development and test programm prior to its introduction to the market. The present paper describes the philosophy of prototype testing, some of the challenges encountered in instrumenting the machine and the methodology and experimental techniques used to solve the problems. In particular, it describes some of the advanced implementations of blade vibration measurements, optical pyrometry and other temperature measurements, and techniques to determine efficiency. The experimental results confirm the design of the model V84.3A gas turbine and show some potential for further improvements.

show abstract

Development of a Wide Range Temperature Pyrometer for Gas Turbine Application

Cited by 5 publications

References 7 publications

Turbine Airfoil External Heat Transfer Measurement in a Hot-Cascade

Turbine Airfoil External Heat Transfer Measurement in a Hot-Cascade

Application of Advanced Experimental Techniques in the Development of a Cooled Turbine Nozzle

Testing the Model V84.3A Gas Turbine: Experimental Techniques and Results

Contact Info

Product

Resources

About