04/02895 Hybrid heat flux measurement system for solar central receiver evaluation

2004 ◽  
Vol 45 (6) ◽  
pp. 409
Keyword(s):  
Heat Flux ◽  
Measurement System ◽  
Flux Measurement ◽  
Heat Flux Measurement ◽  
Central Receiver

scholarly journals 815 Heat Flux Measurement of Light Collecting Portion in the Solar Concentrator : Development of Heat Flux Measurement system

2013 ◽  
Vol 2013.66 (0) ◽  
pp. 263-264
Author(s):  
Tsuyoshi HARAKAWA ◽  
Yoshinori NAGASE ◽  
Shigeki TOMOMATSU ◽  
Ryusuke KAWAMURA ◽  
Masatoshi KIMURA
Keyword(s):  
Heat Flux ◽  
Measurement System ◽  
Flux Measurement ◽  
Solar Concentrator ◽  
Heat Flux Measurement

Design and Calibration of a Local Heat-Flux Measurement System for Unsteady Flows

1989 ◽  
Vol 111 (2) ◽  
pp. 552-557 ◽  
Author(s):  
D. S. Campbell ◽  
M. Gundappa ◽  
T. E. Diller
Keyword(s):  
Thin Film ◽  
Heat Transfer ◽  
Heat Flux ◽  
Measurement System ◽  
Radiant Energy ◽  
Unsteady Flows ◽  
Flux Measurement ◽  
Local Heat ◽  
Heat Flux Measurement ◽  
Local Heat Flux

A local heat–flux measurement system was built, calibrated, and tested for use in unsteady flows. The system was designed to maintain constant-wall-temperature boundary conditions. The measuring element is a thin-film heat flux gage made by sputter-coating gold onto a substrate. A constant-temperature anemometer is used to maintain the thin-film gage at a specified temperature under fluctuating conditions. A separate temperature control system maintains the surrounding boundary at the gage temperature. The system was calibrated for both steady and unsteady flows using a specially designed calibrator for local heat flux gages. The steady calibration was done with predominantly convective heat transfer. The unsteady calibration was achieved by adding oscillating radiant energy to the surface. Consequently, quantitative results can be obtained for both the mean and fluctuating components of the heat transfer. The frequency response was good to over 90 Hz. Sample results are presented of the unsteady heat transfer over a circular cylinder caused by natural vortex shedding at 70 to 80 Hz.

scholarly journals Gradient heat flux measurement in study of condensation at inner surface of the tube

2020 ◽  
Vol 1683 ◽  
pp. 022018
Author(s):  
S Z Sapozhnikov ◽  
V Y Mityakov ◽  
A Y Babich ◽  
E R Zainullina
Keyword(s):  
Heat Flux ◽  
Flux Measurement ◽  
Heat Flux Measurement ◽  
Inner Surface
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