KaydedilenlerDerginizi ekleyin

Dergiler / Journal of Sustainable Construction Materials and Technologies / 2016 / Cilt: 1 - Sayı: 1

Assessment of long time approximation equation to determine thermal conductivity of high porous materials with NSS probe

Hussein HUMAİSH
Bastien RUET
Laurent MARMORET
Hassen BEJİ
Sayfa
1–15
Yayın Tarihi
2016-05-23
DOI
—
🏛️Bu makalenin bibliyografik verileri ve tam metin bağlantısı DergiPark üzerinden sağlanmıştır.
DergiPark Kaydı ↗
✨

Yapay Zeka Hızlı Bakış & Çıkarımlar

AI Insight
⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

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.

📌 3 Maddede Bu Makale

🎯
Amaç & Hipotez:Recent economic changes have increased the focus on energy conservation in buildings.
📊
Temel Bulgular & Veri:The TP02 Huksefux® Non Steady State Probe (NSSP) has been used to determine the thermal conductivity of the building insulation materials.
💡
Sonuç & Katkı: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.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Alan Parametreleri

Abstract

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.

🔖

Bu Makaleye Atıf Yap

HUMAİSH, H., RUET, B., MARMORET, L., BEJİ, H. (2016). Assessment of long time approximation equation to determine thermal conductivity of high porous materials with NSS probe. Journal of Sustainable Construction Materials and Technologies, Cilt: 1 - Sayı: 1, 1–15. https://ajindex.com/articles/780855

📄 Tam Metin PDF Okuyucu

📄

PDF görüntüleyici hazırlanıyor...

Kaynakça (13)

  1. Al-Homoud M, Performance characteristics and practical applications of common building thermal insulation materials, Building and Environment, Vol. 40 (3), pp. 353-366, 2005.
  2. Hooper FC, Lepper FR, Transient heat flow apparatus for the determination of thermal conductivities, Transactions American Society of Heating and Ventilation Engineers, Vol.56, pp. 309-324, 1950.
  3. Joy FA, Thermal conductivity of insulation containing moisture, ASTM Symposium on Thermal Conductivity Measurements, pp. 65-80, 1957.
  4. Batty WJ, O'Callaghan PW, Probert SO, Assessment of the thermal-probe technique for rapid, accurate measurements of effective thermal conductivities, Applied Energy, Vol.16, pp. 83-113, 1984.
  5. Hust, JG, Smith, OR, lnterlaboratory comparison of two types of line-source thermal-conductivity apparatus measuring five insulating materials, National Institute of Standards and Technology, Report N. 89/3908, for U.S Dept. of Energy, Oak Ridge National Laboratory, 1989.
  6. Pilkington B, In situ measurements of building materials using a thermal probe, phD, University of Plymouth, England, 2008
  7. Carslaw HS, Jaeger JC, Conduction of Heat in Solids, 2nd Ed., Oxford University, London, 1959.
  8. Abramowitz M, Stegun I, Handbook of Mathematical Functions with Formulas, Graphs and Mathematical Tables, Chapter 5, 9th Dover Printing, 10th GPO Printing Ed., Dover, 1964.
  9. Achard G., Roux J.J, Sublet, J.C “Description d’une sonde de mesure des caractéristiques thermiques des couches superficielles du sol. Résultats d’une campagne de mesures”, Revue Générale de Thermique, N° 267, pp 177-188, 1984.
  10. Vos B, Analysis of thermal-probe measurements using an iterative method to give sample conductivity and diffusivity data, Appl. Sci. Res., pp. 425–438, 1955. ASTM D 5334 – 08, Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock by Thermal Needle Probe Procedure, Approved 2008.
  11. Blackwell JH, A transient-flow method for determination of thermal constants of insulating materials in bulk, Part 1-Theory, Journal of Applied Physics, Vol. 25, N. 2, pp.137-144, 1954.
  12. Humaish H, Ruet B, Marmoret L, Beji H, Thermal characterization of highly porous materials by the hot wire method, in proceeding of the French Thermal Society (SFT) congress, La Rochelle, France, 2015.
  13. Ruet B, Humaish H, Marmoret L, Beji H, Assessment of thermal probe technique for determination of effective conductivity of building insulation materials, in proceeding of the 20 th European Conference on Therm