Assessment of long time approximation equation to determine thermal conductivity of high porous materials with NSS probe
Recent economic changes have increased the focus on energy conservation in buildings. Improve insulation represents one of the biggest challenge to save energy. The TP02 Huksefux® Non Steady State Probe (NSSP) has been used to determine the thermal conductivity of the building insulation materials....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Yildiz Technical University
2016-05-01
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| Series: | Journal of Sustainable Construction Materials and Technologies |
| Online Access: | https://dergipark.org.tr/tr/pub/jscmt/issue/17502/183061 |
| _version_ | 1797915751404797952 |
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| author | Hassen Beji̇ Laurent Marmoret Bastien Ruet Hussein Humai̇sh |
| author_facet | Hassen Beji̇ Laurent Marmoret Bastien Ruet Hussein Humai̇sh |
| author_sort | Hassen Beji̇ |
| collection | DOAJ |
| description | Recent economic changes have increased the focus on energy conservation in buildings. Improve insulation represents one of the biggest challenge to save energy. The TP02 Huksefux® Non Steady State Probe (NSSP) has been used to determine the thermal conductivity of the building insulation materials. Usually, the long term approximation equation (linear form) is applied to determine the thermal conductivity when using hot wire techniques. Long term approximation has been successfully used to characterize glycerol: a fluid which doesn’t present contact resistance and porosity. But, an S-shaped appears for more porous materials. So to generalize the possibility of using this method, glass beads of 2, 8 and 10 mm balls diameters have been tested before characterising insulation materials. Firstly, we define the best portions in time (t 1 and t 2 ) of the S-shaped curve to determine thermal conductivity. Secondly, Comsol Multiphysics® test the influence of parameters of the TP02 Huksefux® like components of the probe, the contact resistance and electrical power on the S-shaped form. |
| first_indexed | 2024-04-10T12:46:29Z |
| format | Article |
| id | doaj.art-afa1bb4f0362482abcc1f5d254300e7e |
| institution | Directory Open Access Journal |
| issn | 2458-973X |
| language | English |
| last_indexed | 2024-04-10T12:46:29Z |
| publishDate | 2016-05-01 |
| publisher | Yildiz Technical University |
| record_format | Article |
| series | Journal of Sustainable Construction Materials and Technologies |
| spelling | doaj.art-afa1bb4f0362482abcc1f5d254300e7e2023-02-15T16:14:03ZengYildiz Technical UniversityJournal of Sustainable Construction Materials and Technologies2458-973X2016-05-0111115252Assessment of long time approximation equation to determine thermal conductivity of high porous materials with NSS probeHassen Beji̇0Laurent Marmoret1Bastien Ruet2Hussein Humai̇sh3Université de Picardie Jules Verne, LTI, IUT, Département Génie Civil, Avenue des Facultés, 80025 Amiens Cedex 01Université de Picardie Jules Verne, LTI, IUT, Département Génie Civil, Avenue des Facultés, 80025 Amiens Cedex 01Université de Picardie Jules Verne, LTI, IUT, Département Génie Civil, Avenue des Facultés, 80025 Amiens Cedex 01Université de Picardie Jules Verne, LTI, IUT, Département Génie Civil, Avenue des Facultés, 80025 Amiens Cedex 01Recent economic changes have increased the focus on energy conservation in buildings. Improve insulation represents one of the biggest challenge to save energy. The TP02 Huksefux® Non Steady State Probe (NSSP) has been used to determine the thermal conductivity of the building insulation materials. Usually, the long term approximation equation (linear form) is applied to determine the thermal conductivity when using hot wire techniques. Long term approximation has been successfully used to characterize glycerol: a fluid which doesn’t present contact resistance and porosity. But, an S-shaped appears for more porous materials. So to generalize the possibility of using this method, glass beads of 2, 8 and 10 mm balls diameters have been tested before characterising insulation materials. Firstly, we define the best portions in time (t 1 and t 2 ) of the S-shaped curve to determine thermal conductivity. Secondly, Comsol Multiphysics® test the influence of parameters of the TP02 Huksefux® like components of the probe, the contact resistance and electrical power on the S-shaped form.https://dergipark.org.tr/tr/pub/jscmt/issue/17502/183061 |
| spellingShingle | Hassen Beji̇ Laurent Marmoret Bastien Ruet Hussein Humai̇sh Assessment of long time approximation equation to determine thermal conductivity of high porous materials with NSS probe Journal of Sustainable Construction Materials and Technologies |
| title | Assessment of long time approximation equation to determine thermal conductivity of high porous materials with NSS probe |
| title_full | Assessment of long time approximation equation to determine thermal conductivity of high porous materials with NSS probe |
| title_fullStr | Assessment of long time approximation equation to determine thermal conductivity of high porous materials with NSS probe |
| title_full_unstemmed | Assessment of long time approximation equation to determine thermal conductivity of high porous materials with NSS probe |
| title_short | Assessment of long time approximation equation to determine thermal conductivity of high porous materials with NSS probe |
| title_sort | assessment of long time approximation equation to determine thermal conductivity of high porous materials with nss probe |
| url | https://dergipark.org.tr/tr/pub/jscmt/issue/17502/183061 |
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