FR3077132B1 - METHOD AND DEVICE FOR DETERMINING THE THERMAL TRANSMISSION COEFFICIENT OF A WALL - Google Patents

METHOD AND DEVICE FOR DETERMINING THE THERMAL TRANSMISSION COEFFICIENT OF A WALL Download PDF

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Publication number
FR3077132B1
FR3077132B1 FR1850515A FR1850515A FR3077132B1 FR 3077132 B1 FR3077132 B1 FR 3077132B1 FR 1850515 A FR1850515 A FR 1850515A FR 1850515 A FR1850515 A FR 1850515A FR 3077132 B1 FR3077132 B1 FR 3077132B1
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France
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medium
wall
temperature
air
tair
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FR1850515A
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French (fr)
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FR3077132A1 (en
Inventor
Florent Alzetto
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Saint Gobain Isover SA France
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Saint Gobain Isover SA France
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K17/00—Measuring quantity of heat
    • G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
    • G01K17/08—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
    • G01K17/20—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature across a radiating surface, combined with ascertainment of the heat transmission coefficient

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

Ce procédé, qui vise à déterminer le coefficient de transmission thermique U d'une paroi de séparation entre un premier milieu et un deuxième milieu, comprend des étapes dans lesquelles : - sur au moins deux périodes de temps Dk successives correspondant à des puissances Pk distinctes de chauffe appliquées dans le premier milieu, on procède à une campagne de mesures de la température de surface de la paroi dans le premier milieu Tsurf in k et de la température de l'air dans le premier milieu Tair in k à intervalles de temps rapprochés, ainsi qu'à la détermination de la température de l'air dans le deuxième milieu Tair out k à intervalles de temps rapprochés ; - on détermine la valeur de la grandeur U/hin, où hin est le coefficient d'échange convectif de l'air dans le premier milieu au voisinage de la paroi, par ajustement entre, d'une part, un modèle thermique exprimant la variation temporelle de la température de l'air dans le premier milieu en fonction de la température de surface de la paroi dans le premier milieu et de la température de l'air dans le deuxième milieu, et d'autre part, l'évolution mesurée de la température de l'air dans le premier milieu Tair in k ou de la température de surface de la paroi dans le premier milieu Tsurf in k en fonction du temps.This method, which aims to determine the thermal transmission coefficient U of a partition wall between a first medium and a second medium, comprises steps in which: - over at least two successive time periods Dk corresponding to distinct powers Pk of heating applied in the first medium, a campaign of measurements of the surface temperature of the wall in the first medium Tsurf in k and of the air temperature in the first medium Tair in k is carried out at close time intervals , as well as to the determination of the temperature of the air in the second medium Tair out k at short time intervals; - the value of the quantity U / hin is determined, where hin is the convective exchange coefficient of air in the first medium in the vicinity of the wall, by adjustment between, on the one hand, a thermal model expressing the variation time of the air temperature in the first medium as a function of the surface temperature of the wall in the first medium and the air temperature in the second medium, and on the other hand, the measured evolution of the temperature of the air in the first medium Tair in k or the surface temperature of the wall in the first medium Tsurf in k as a function of time.

FR1850515A 2018-01-23 2018-01-23 METHOD AND DEVICE FOR DETERMINING THE THERMAL TRANSMISSION COEFFICIENT OF A WALL Active FR3077132B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1850515A FR3077132B1 (en) 2018-01-23 2018-01-23 METHOD AND DEVICE FOR DETERMINING THE THERMAL TRANSMISSION COEFFICIENT OF A WALL

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1850515 2018-01-23
FR1850515A FR3077132B1 (en) 2018-01-23 2018-01-23 METHOD AND DEVICE FOR DETERMINING THE THERMAL TRANSMISSION COEFFICIENT OF A WALL

Publications (2)

Publication Number Publication Date
FR3077132A1 FR3077132A1 (en) 2019-07-26
FR3077132B1 true FR3077132B1 (en) 2021-06-18

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FR1850515A Active FR3077132B1 (en) 2018-01-23 2018-01-23 METHOD AND DEVICE FOR DETERMINING THE THERMAL TRANSMISSION COEFFICIENT OF A WALL

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FR (1) FR3077132B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2907215A1 (en) * 2006-10-17 2008-04-18 Yohan Marc Pineau Wall's heat flow measuring device for e.g. diagnosing energy performance of building, has measurement element permitting to simultaneously record ambient temperature of room, external temperature and inner surface temperature of wall
FR3032529B1 (en) * 2015-02-06 2019-06-07 Saint-Gobain Isover DETERMINING THE THERMAL RESISTANCE OF A WALL
US10054500B2 (en) * 2015-09-24 2018-08-21 King Fahd University Of Petroleum And Minerals System for determining thermal transmittance and thermal resistance of building walls assemblies under dynamic weather conditions

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Publication number Publication date
FR3077132A1 (en) 2019-07-26

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