Study of the Flow Temperature and Ring Design Influence on the Response of a New Reduced-Size Calorimetric Cell for Nuclear Heating Quantification

This paper concerns experimental studies of different designs of a new compact calorimetric cell under laboratory conditions. This kind of cell is used for the measurement of the nuclear heating rate inside Material Testing Reactors thanks to differential calorimetry. The results, obtained by applying an operating protocol corresponding to a preliminary out-of-pile calibration step, are presented for three designs. The influence of the horizontal-fin design is shown on the calibration curve and the sensor sensitivity. The influence of the external fluid flow temperature is given for the quarter design. The different responses of the calorimetric cell are explained by taken into account a 1D analytical thermal model coupling thermal conductive and radiative transfers.

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Review of Nuclear Heating Measurement by Calorimetry in France and USA

EPJ Web of Conferences ◽

10.1051/epjconf/201817004019 ◽

2018 ◽

Vol 170 ◽

pp. 04019 ◽

Cited By ~ 2

Author(s):

C. Reynard-Carette ◽

G. Kohse ◽

J. Brun ◽

M. Carette ◽

A. Volte ◽

...

Keyword(s):

Heat Flow ◽

Measurement Techniques ◽

Short Review ◽

Material Testing ◽

Calorimetric Cell ◽

Calibration Methods ◽

Nuclear Heating ◽

The Common ◽

Differential Calorimeter ◽

Fission Reactors

This paper gives a short review of sensors dedicated to measuring nuclear heating rate inside fission reactors in France and USA and especially inside Material Testing Reactors. These sensors correspond to heat flow calorimeters composed of a single calorimetric cell or of two calorimetric cells at least with a reference cell to obtain a differential calorimeter. The aim of this paper is to present the common running principle of these sensors and their own special characteristics through their design, calibration methods, and in-pile measurement techniques, and to describe multi-sensor probes including calorimeters.

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Cooling Design of Integrated Motor Drives Using Analytical Thermal Model, Finite Element Analysis, and Computational Fluid Dynamics

2021 IEEE Applied Power Electronics Conference and Exposition (APEC) ◽

10.1109/apec42165.2021.9487449 ◽

2021 ◽

Author(s):

Renato A. Torres ◽

Hang Dai ◽

Thomas M. Jahns ◽

Bulent Sarlioglu ◽

Woongkul Lee

Keyword(s):

Fluid Dynamics ◽

Finite Element Analysis ◽

Computational Fluid Dynamics ◽

Finite Element ◽

Thermal Model ◽

Motor Drives ◽

Element Analysis ◽

Cooling Design ◽

Analytical Thermal Model

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A Hybrid Lumped-Parameter and Two-Dimensional Analytical Thermal Model for Electrical Machines

IEEE Transactions on Industry Applications ◽

10.1109/tia.2020.3029997 ◽

2021 ◽

Vol 57 (1) ◽

pp. 246-258

Author(s):

Dawei Liang ◽

Z. Q. Zhu ◽

Yafeng Zhang ◽

Jianghua Feng ◽

Shuying Guo ◽

...

Keyword(s):

Thermal Model ◽

Electrical Machines ◽

Two Dimensional ◽

Lumped Parameter ◽

Analytical Thermal Model

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Experimental study on the thermal behaviour of fire exposed slim-floor beams

Proceedings 12th international conference on Advances in Steel-Concrete Composite Structures - ASCCS 2018 ◽

10.4995/asccs2018.2018.8288 ◽

2018 ◽

Cited By ~ 1

Author(s):

Vicente Albero ◽

Ana Espinós ◽

Enrique Serra ◽

Manuel L. Romero ◽

Antonio Hospitaler

Keyword(s):

Cross Section ◽

Thermal Behaviour ◽

Thermal Model ◽

Elevated Temperatures ◽

Experimental Studies ◽

Composite Beams ◽

Technical Equipment ◽

Design Code ◽

Special Configuration ◽

The Cross

Steel-concrete composite beams embedded in floors (slim-floors) offer various advantages such as the floor thickness reduction or the ease of installation of under-floor technical equipment. However, this typology presents important differences in terms of thermal behaviour, as compared to other composite beams, when exposed to elevated temperatures. These differences are due to their special configuration, being totally contained within the concrete floor depth. Moreover, the current European fire design code for composite steel-concrete structures (EN 1994-1-2) does not provide any simplified thermal model to evaluate the temperature evolution of each slim-floor part during a fire. Additionally, only a few experimental studies can be found which may help understand the thermal behaviour of these composite beams. This paper presents an experimental investigation on the thermal behaviour of slim-floor beams. Electrical radiative panels were used in the test setup to produce the thermal heating. The thermal gap between the lower flange of the steel profile and the bottom steel plate was studied, being found to be one of the most influential elements over the cross-section temperature gradient. The experimental campaign was developed by varying the cross-section configuration in order to evaluate the influence of this parameter over the slim-floor thermal behavior. Finally, the experiments carried out were used to develop and calibrate a finite element thermal model which may help in further research on the thermal behaviour of slim-floor composite beams.

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