High Accuracy Total Temperature Measurements in a Turbine Powered Simulator Unit

2015 ◽  
Author(s):  
David D. Murakami ◽  
Stephen D. Schery ◽  
Kurtis Long
Keyword(s):  
High Accuracy ◽  
Temperature Measurements ◽  
Total Temperature

The use of carbon resistors for high accuracy temperature measurements

Cryogenics ◽  
1974 ◽  
Vol 14 (6) ◽  
pp. 340-341 ◽  
Author(s):  
V. Gröger ◽  
F. Stangler
Keyword(s):  
High Accuracy ◽  
Temperature Measurements

A method for performing high accuracy temperature measurements in low-pressure sooting flames using two-line atomic fluorescence

2011 ◽  
Vol 33 (1) ◽  
pp. 799-806 ◽  
Author(s):  
Iain S. Burns ◽  
Xavier Mercier ◽  
Maxime Wartel ◽  
Robin S.M. Chrystie ◽  
Johan Hult ◽  
...  
Keyword(s):  
Low Pressure ◽  
High Accuracy ◽  
Temperature Measurements ◽  
Atomic Fluorescence

Unsteady Total Temperature Measurements Downstream of a High-Pressure Turbine

1998 ◽  
Vol 120 (4) ◽  
pp. 760-767 ◽  
Author(s):  
D. R. Buttsworth ◽  
T. V. Jones ◽  
K. S. Chana
Keyword(s):  
Heat Transfer ◽  
High Pressure ◽  
Wind Tunnel ◽  
Convective Heat Transfer Coefficient ◽  
Fast Response ◽  
Temperature Measurements ◽  
High Pressure Turbine ◽  
Response Device ◽  
Temperature Probe ◽  
Total Temperature

An experimental technique for the measurement of flow total temperature in a turbine facility is demonstrated. Two thin film heat transfer gases located at the stagnation point of fused quartz substrates are operated at different temperatures in order to determine the flow total temperature. With this technique, no assumptions regarding the magnitude of the convective heat transfer coefficient are made. Thus, the probe can operate successfully in unsteady compressible flows of arbitrary composition and high free-stream turbulence levels without a heat transfer law calibration. The operation of the total temperature probe is first demonstrated using a small wind tunnel facility. Based on results from the small wind tunnel tests, it appears that the probe total temperature measurements are accurate to within ±1 K. Experiments using the probe downstream of a high-pressure turbine stage are than described. Both high and low-frequency components of the flow total temperature can be accurately resolved with the present technique. The probe measures a time-averaged flow total temperature that is in good agreement with thermocouple measurements made downstream of the rotor. Frequencies as high as 182 kHz have been detected in the spectral analysis of the heat flux signals from the total probe. Through comparison with fast-response aerodynamic probe measurements, it is demonstrated that the current measurement location, the total temperature fluctuations arise mainly due to the isentropic extraction of work by the turbine. The present total temperature probe is demonstrated to be an accurate, robust, fast-response device that is suitable for operation in a turbomachinery environment.

scholarly journals Reducing the Uncertainty of Self-heating in High-accuracy Cryogenic Temperature Measurements

2015 ◽  
Vol 67 ◽  
pp. 1157-1163
Author(s):  
K.R. Li ◽  
G. Zhou ◽  
L.Q. Liu ◽  
L.Y. Xiong ◽  
B. Dong ◽  
...  
Keyword(s):  
Cryogenic Temperature ◽  
High Accuracy ◽  
Temperature Measurements ◽  
Self Heating

scholarly journals Unsteady Total Temperature Measurements Downstream of a High Pressure Turbine

1997 ◽  
Author(s):  
D. R. Buttsworth ◽  
T. V. Jones ◽  
K. S. Chana
Keyword(s):  
Heat Transfer ◽  
High Pressure ◽  
Wind Tunnel ◽  
Convective Heat Transfer Coefficient ◽  
Fast Response ◽  
Temperature Measurements ◽  
High Pressure Turbine ◽  
Response Device ◽  
Temperature Probe ◽  
Total Temperature

An experimental technique for the measurement of flow total temperature in a turbine facility is demonstrated. Two thin film heat transfer gauges located at the stagnation point of fused quartz substrates are operated at different temperatures in order to determine the flow total temperature. With this technique, no assumptions regarding the magnitude of the convective heat transfer coefficient are made. Thus, the probe can operate successfully in unsteady compressible flows of arbitrary composition and high free-stream turbulence levels without a heat transfer law calibration. The operation of the total temperature probe is first demonstrated using a small wind tunnel facility. Based on results from the small wind tunnel tests, it appears that the probe total temperature measurements are accurate to within ± 1K. Experiments using the probe downstream of a high pressure turbine stage are then described. Both high and low frequency components of the flow total temperature can be accurately resolved with the present technique. The probe measures a time-averaged flow total temperature that is in good agreement with thermocouple measurements made downstream of the rotor. Frequencies as high as 182 kHz have been detected in the spectral analysis of the heat flux signals from the total temperature probe. Through comparison with fast-response aerodynamic probe measurements, it is demonstrated that at the current measurement location, the total temperature fluctuations arise mainly due to the isentropic extraction of work by the turbine. The present total temperature probe is demonstrated to be an accurate, robust, fast-response device that is suitable for operation in a turbomachinery environment.

Sign in / Sign up

Export Citation Format

Share Document