Abstract
When a thermocouple is placed in a high temperature gas-flow stream, the measured temperature could be biased from the true gas temperature due to a large radiation heat loss from a thermocouple surface to its surroundings. The energy is transferred by convection to the thermocouple and then dissipated by radiation to the surroundings. The energy balance on the thermocouple between the convection and radiation is written as the following equation. h(T{sub g} - T) = {epsilon}{sigma}(T{sup 4} - T{sup 4}{sub )} Especially, the biased temperature measurement from the radiation is very important to development in a Very High Temperature gas cooled nuclear Reactor (VHTR). Many investigators have suggested the various methods for correcting the radiation error, which include a probe with two thermocouples of unequal diameters or of unequal emissivity values, a suction pyrometer, a radiation shield and others. In this study, we measured the temperature in an internal gas flow by two thermocouples of unequal diameter and estimated the effect of the diameters on the temperature measurement.
Kim, Chan Soo;
Hong, Sung Deok;
Seo, Dong Un;
Kim, Yong Wan;
Lee, Won Jae
[1]
- Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)
Citation Formats
Kim, Chan Soo, Hong, Sung Deok, Seo, Dong Un, Kim, Yong Wan, and Lee, Won Jae.
Reduced Radiation Error for Temperature Measurement in Internal Gas Flow.
Korea, Republic of: N. p.,
2008.
Web.
Kim, Chan Soo, Hong, Sung Deok, Seo, Dong Un, Kim, Yong Wan, & Lee, Won Jae.
Reduced Radiation Error for Temperature Measurement in Internal Gas Flow.
Korea, Republic of.
Kim, Chan Soo, Hong, Sung Deok, Seo, Dong Un, Kim, Yong Wan, and Lee, Won Jae.
2008.
"Reduced Radiation Error for Temperature Measurement in Internal Gas Flow."
Korea, Republic of.
@misc{etde_21099102,
title = {Reduced Radiation Error for Temperature Measurement in Internal Gas Flow}
author = {Kim, Chan Soo, Hong, Sung Deok, Seo, Dong Un, Kim, Yong Wan, and Lee, Won Jae}
abstractNote = {When a thermocouple is placed in a high temperature gas-flow stream, the measured temperature could be biased from the true gas temperature due to a large radiation heat loss from a thermocouple surface to its surroundings. The energy is transferred by convection to the thermocouple and then dissipated by radiation to the surroundings. The energy balance on the thermocouple between the convection and radiation is written as the following equation. h(T{sub g} - T) = {epsilon}{sigma}(T{sup 4} - T{sup 4}{sub )} Especially, the biased temperature measurement from the radiation is very important to development in a Very High Temperature gas cooled nuclear Reactor (VHTR). Many investigators have suggested the various methods for correcting the radiation error, which include a probe with two thermocouples of unequal diameters or of unequal emissivity values, a suction pyrometer, a radiation shield and others. In this study, we measured the temperature in an internal gas flow by two thermocouples of unequal diameter and estimated the effect of the diameters on the temperature measurement.}
place = {Korea, Republic of}
year = {2008}
month = {May}
}
title = {Reduced Radiation Error for Temperature Measurement in Internal Gas Flow}
author = {Kim, Chan Soo, Hong, Sung Deok, Seo, Dong Un, Kim, Yong Wan, and Lee, Won Jae}
abstractNote = {When a thermocouple is placed in a high temperature gas-flow stream, the measured temperature could be biased from the true gas temperature due to a large radiation heat loss from a thermocouple surface to its surroundings. The energy is transferred by convection to the thermocouple and then dissipated by radiation to the surroundings. The energy balance on the thermocouple between the convection and radiation is written as the following equation. h(T{sub g} - T) = {epsilon}{sigma}(T{sup 4} - T{sup 4}{sub )} Especially, the biased temperature measurement from the radiation is very important to development in a Very High Temperature gas cooled nuclear Reactor (VHTR). Many investigators have suggested the various methods for correcting the radiation error, which include a probe with two thermocouples of unequal diameters or of unequal emissivity values, a suction pyrometer, a radiation shield and others. In this study, we measured the temperature in an internal gas flow by two thermocouples of unequal diameter and estimated the effect of the diameters on the temperature measurement.}
place = {Korea, Republic of}
year = {2008}
month = {May}
}