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Design, calibration and error analysis of instrumentation for heat transfer measurements in internal combustion enginesThe paper reports the methodology and uncertainty analyses of instrumentation for heat transfer measurements in internal combustion engines. Results are presented for determining the local wall heat flux in an internal combustion engine (using a surface thermocouple-type heat flux gage) and the apparent flame-temperature and soot volume fraction path length product in a diesel engine (using two-color pyrometry). It is shown that a surface thermocouple heat transfer gage suitably constructed and calibrated will have an accuracy of 5 to 10 percent. It is also shown that, when applying two-color pyrometry to measure the apparent flame temperature and soot volume fraction-path length, it is important to choose at least one of the two wavelengths to lie in the range of 1.3 to 2.3 micrometers. Carefully calibrated two-color pyrometer can ensure that random errors in the apparent flame temperature and in the soot volume fraction path length will remain small (within about 1 percent and 10-percent, respectively).
Document ID
19880031282
Document Type
Conference Paper
Authors
Ferguson, C. R. (Purdue Univ. West Lafayette, IN, United States)
Tree, D. R. (Purdue Univ. West Lafayette, IN, United States)
Dewitt, D. P. (Purdue University West Lafayette, IN, United States)
Wahiduzzaman, S. A. H. (Integral Technologies, Inc. Westmont, IL, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
INSTRUMENTATION AND PHOTOGRAPHY
Meeting Information
Developments in experimental techniques in heat transfer and combustion(Pittsburgh, PA)
Funding Number(s)
CONTRACT_GRANT: DEN3-342
Distribution Limits
Public
Copyright
Other