TY - GEN

T1 - Analysis of heat flux measurement by circular foil gages in a mixed convection/radiation environment

AU - Kuo, C. H.

AU - Kulkarni, Anil Kamalakant

PY - 1991/12/1

Y1 - 1991/12/1

N2 - Principles of heat flux measurement by circular foil heat flux sensors, also known as Gardon gages, are analyzed in a mixed convection/radiation environment, such as that occuring in the measurement of heat feedback from flames to the solid surface in vertical wall fires. A mathematical model is employed to derive the correction needed to determine the true heat flux from the flux indicated by the gage output using a calibration which is obtained under a radiative heat flux. It is shown that the correction is strongly dependent on the gage size and the heat transfer coefficient of thermal convection. Also, the effect of using a water-cooled gage for a surface at a temperature different from the gage base is studied. A method is proposed for estimating these corrections using charts.

AB - Principles of heat flux measurement by circular foil heat flux sensors, also known as Gardon gages, are analyzed in a mixed convection/radiation environment, such as that occuring in the measurement of heat feedback from flames to the solid surface in vertical wall fires. A mathematical model is employed to derive the correction needed to determine the true heat flux from the flux indicated by the gage output using a calibration which is obtained under a radiative heat flux. It is shown that the correction is strongly dependent on the gage size and the heat transfer coefficient of thermal convection. Also, the effect of using a water-cooled gage for a surface at a temperature different from the gage base is studied. A method is proposed for estimating these corrections using charts.

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M3 - Conference contribution

AN - SCOPUS:0026388759

SN - 0791806162

T3 - ASME/JSME Thermal Engineering Joint Conference

SP - 41

EP - 45

BT - ASME/JSME Thermal Engineering Joint Conference

PB - Publ by ASME

T2 - Proceedings of the 3rd ASME/JSME Thermal Engineering Joint Conference Part 5 (of 5)

Y2 - 17 March 1991 through 22 March 1991

ER -