Heat flux measurement apparatus and heat flux measurement method

摘要

A heat flux measurement apparatus 100 includes a first measurement unit 110, a second measurement unit 120, and heat flux calculation units 130, 140. The first measurement unit 110 measures a temperature difference between a first measurement location and a second measurement location that is lower in temperature than the first measurement location, using a thermocouple 112. The second measurement unit 120 measures a temperature difference between a third measurement location that can be assumed to be isothermal with the first measurement location and a fourth measurement location that can be assumed to be isothermal with the second measurement location, using a thermocouple 122 different in time constant from the thermocouple 112. The heat flux calculation units 130, 140 use measured temperature differences respectively acquired from thermal electromotive forces of the thermocouples 112, 113 of the measurement units 110, 120, and time differential values of the actual measured temperature differences of the respective measurement units 110, 120 to detect a time constant of the thermocouple 112, 122 of at least one of the measurement units 110, 120, calculate a compensated temperature difference by compensating a response lag of the actual measured temperature difference by the detected time constant, and calculate a heat flux based on the compensated temperature difference.

主权项

1. A heat flux measurement apparatus, comprising:
a first thermocouple that measures a temperature difference between a first measurement location and a second measurement location; a second thermocouple that measures a temperature difference between a third measurement location and a fourth measurement location, wherein i) the second thermocouple has a time constant different from the first thermocouple, ii) the second thermocouple is aligned such that a distance between the first and third measurement locations is smaller than a distance between the first and second measurement locations, and iii) the second thermocouple is aligned such that distance between the second and fourth measurement locations is smaller than the distance between the first and second measurement locations; a recording device that, (i) stores location data of the first and second measurement locations, (ii) stores thermal conductivity data between the first and second measurement locations, (iii) accumulates the first temperature difference data measured by the first thermocouple, and (iv) accumulates the second temperature difference data measured by the second thermocouple; and a heat flux calculation unit that, (i) calculates a compensated temperature difference data based on the accumulated first and second temperature difference data stored in the recording device and (ii) calculates a heat flux based on the calculated compensated temperature difference data, thermal conductivity data stored in the recording device, and the location data stored in the recording device.