Lowering the Systematic Error in Measurements of Local Heat Transfer Coefficient by Electric Heating of a Plane Wall

N. S. Dushin; N. I. Mikheev; I. M. Gazizov; I. A. Davletshin

doi:10.3103/S1068799817040158

Lowering the Systematic Error in Measurements of Local Heat Transfer Coefficient by Electric Heating of a Plane Wall

Autores: Dushin N.S.¹, Mikheev N.I.¹, Gazizov I.M.², Davletshin I.A.¹
Afiliações:
1. Kazan Scientific Center
2. Tupolev Kazan National Research Technical University
Edição: Volume 60, Nº 4 (2017)
Páginas: 583-590
Seção: Aircraft and Rocket Engine Theory
URL: https://journals.rcsi.science/1068-7998/article/view/230307
DOI: https://doi.org/10.3103/S1068799817040158
ID: 230307

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Resumo

A technique that allows simultaneous heating of the heat-exchange surface and estimation of its local temperature from the corresponding electrical resistance of the heating element is presented. The systematic error in measurements of the local heat transfer coefficient has been analyzed. A relation that takes possible heat loss into account and minimizes the measurement errors has been obtained.