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Journal of Thermal Analysis and Calorimetry

, Volume 138, Issue 4, pp 2505–2513 | Cite as

Experimental thermal characterization of timber frame exterior wall using reed straws as heat insulation materials

  • Sergiu-Valeriu Georgescu
  • Camelia CoşereanuEmail author
  • Adriana Fotin
  • Luminiţa-Maria Brenci
  • Liviu Costiuc
Article
  • 79 Downloads

Abstract

The research presented in this paper proposes structures of timber frame exterior walls using reed straws as insulation materials. Having thicknesses of 175 mm and designed for exterior building walls, the proposed structures are composed of 12-mm-thick oriented strand board, 150-mm-thick insulation material with and without air layers, a vapour barrier foil and 12.5-mm-thick gypsum board for the interior face of the wall. The insulation materials used as reference for the proposed structures are polystyrene and rock wool. Reed straws used as insulation material for the tested wall structures formed insulation layers of 150 mm thickness in five configurations: 150-mm loose-fill reed straws without air layer and other four variants with loose-fill reed straws and 100-, 50-, 20- and 10-mm-thick air layers, respectively. The air layer was placed at the contact with gypsum board for all configurations. The reference structures (rock wool and polystyrene as insulation materials) followed three of the configurations set-up, namely 150-mm-thick insulation material (rock wool or polystyrene) only and insulation materials with air layers thicknesses of 100 and 50 mm, respectively. The eleven tested structures were subjected to thermal conductivity coefficient (λ) measurements. The tests were performed on HFM436 Lambda equipment. The structures were tested for an entire cycle of temperatures varying between − 10 and 30 °C and thus simulating summer and winter climate conditions. The thermal conductivity coefficient of the exterior walls filled with loose reed straws as insulation material was recorded between mean values of 0.076 and 0.077 W m−1 K−1, except the structure with an air layer of 100 mm, for which a value of 0.120 W m−1 K−1 was registered.

Keywords

Wood frame Wall structure Thermal conductivity Reed straws 

List of symbols

λ

Thermal conductivity (W m−1 K−1)

T

Temperature (°C)

ρ

Density (kg m−3)

\( \Delta T \)

Temperature difference (°C)

Tm

Mean temperature (°C)

u

Reed moisture content (mass%)

Subscripts

EPS

Polystyrene

RW

Rock wool

RS

Reed straws

OSB

Oriented strand board

GB

Gypsum board

VB

Vapour barrier

x

Air layer thickness

Notes

Acknowledgements

The authors acknowledge the structural funds project PRO-DD (POS-CCE, O.2.2.1., ID 123, SMIS 2637, No. 11/2009) for providing the infrastructure used.

References

  1. 1.
    Cao X, Liu J, Xilei D. Building energy-consumption status worldwide and the state-of-the-art technologies for zero-energy buildings during the past decade. Energy Build. 2016;128:198–213.CrossRefGoogle Scholar
  2. 2.
    Su X, Luo Z, Li Y, Huang C. Life cycle inventory comparison of different building insulation materials and uncertainty analysis. J Clean Prod. 2016;112(1):275–81.CrossRefGoogle Scholar
  3. 3.
    Asdrubali F, D’Alessandro F, Schiavoni S. A review of unconventional sustainable building insulation materials. Sustain Mater Technol. 2015;4:1–17.Google Scholar
  4. 4.
    Kain G, Barbu CM, Hinterreiter S, Richter K, Petutschnigg A. Using bark as heat insulation material. BioResources. 2013;8(3):3718–31.CrossRefGoogle Scholar
  5. 5.
    Kain G, Lienbacher B, Barbu MC, Senck S, Alexander Petutschnigg A. Water vapour diffusion resistance of larch (Larix decidua) bark insulation panels and application considerations based on numeric modelling. Constr Build Mater. 2018;164:308–16.CrossRefGoogle Scholar
  6. 6.
    Brenci LM, Cosereanu C, Zeleniuc O, Georgescu SV, Fotin A. Thermal conductivity of wood with ABS waste core sandwich composites subject to various core modifications. BioResources. 2018;13(1):555–68.Google Scholar
  7. 7.
    Miljan M, Miljan MJ, Miljan J, Akermann K, Karja K. Thermal transmittance of reed-insulated walls in a purpose-built test house. Mires Peat 2013/14;13(Article 07):1–12.Google Scholar
  8. 8.
    Miljan M, Miljan J. Thermal transmittance and the embodied energy of timber frame lightweight walls insulated with straw and reed. In: IOP conference series: Materials Science Engineering, vol. 96; 2015. p. 012076.  https://doi.org/10.1088/1757-899x/96/1/012076.CrossRefGoogle Scholar
  9. 9.
    Miljan MJ, Miljan M., Miljan J. Thermal conductivity of walls insulated with natural materials. In: 4th international conference civil engineering 13’ proceedings, part I construction and materials, vol. 4; 2013. p. 175–79.Google Scholar
  10. 10.
    Ashour T, Georg H, Wu W. Performance of straw bale wall: a case of study. Energy Build. 2011;43(8):1960–7.  https://doi.org/10.1016/j.enbuild.2011.04.001.CrossRefGoogle Scholar
  11. 11.
    Pásztory Z, Horváth T, Glass SV, Zelinka SL. Thermal insulation system made of wood and paper for use in residential construction. Forest Prod J. 2015;65(7–8):352–7.  https://doi.org/10.13073/FPJ-D-14-00100.CrossRefGoogle Scholar
  12. 12.
    Nicolajsen A. Thermal transmittance of a cellulose loose-fill insulation material. Build Environ. 2005;40(7):907–14.  https://doi.org/10.1016/j.buildenv.2004.08.025.CrossRefGoogle Scholar
  13. 13.
    Zheng C, Li D, Ek M. Mechanism and kinetics of thermal degradation of insulating materials developed from cellulose fiber and fire retardants. J Thermal Anal Calorim. 2018.  https://doi.org/10.1007/s10973-018-7564-5.CrossRefGoogle Scholar
  14. 14.
    Samal S, Stuchlík M, Petrikova I. Thermal behavior of flax and jute reinforced in matrix acrylic composite. J Therm Anal Calorim. 2018;131(2):1035–40.  https://doi.org/10.1007/s10973-017-6662-0.CrossRefGoogle Scholar
  15. 15.
    Jiang Y, Lawrence M, Hussain A, Ansell M, Walker P. Comparative moisture and heat sorption properties of fibre and shiv derived from hemp and flax. Cellulose. 2018.  https://doi.org/10.1007/s10570-018-2145-0.CrossRefGoogle Scholar
  16. 16.
    Stevulova N, Estokova A, Cigasova J, Schwarzova I, Kacik F, Geffert A. Thermal degradation of natural and treated hemp hurds under air and nitrogen atmosphere. J Therm Anal Calorim. 2017;128(3):1649–60.  https://doi.org/10.1007/s10973-016-6044-z.CrossRefGoogle Scholar
  17. 17.
    Roberts BC, Webber ME, Ezekoye OA. Development of a multi-objective optimization tool for selecting thermal insulation materials in sustainable designs. Energy Build. 2015;105(15):358–67.  https://doi.org/10.1016/j.enbuild.2015.07.063.CrossRefGoogle Scholar
  18. 18.
    Kain G, Lienbacher B, Barbu M-C, Richter K, Petutschnigg A. Larch (Larix decidua) bark insulation board: interactions of particle orientation, physical–mechanical and thermal properties. Eur J Wood Wood Prod. 2018;76:489–98.  https://doi.org/10.1007/s00107-017-1271-y.CrossRefGoogle Scholar
  19. 19.
    Labat M, Woloszyn M, Garnier G, Roux JJ. Dynamic coupling between vapour and heat transfer in wall assemblies: Analysis of measurements achieved under real climate. Build Environ. 2015;87:129–41.CrossRefGoogle Scholar
  20. 20.
    Durica P, Juras P, Gaspierik V, Rybarik J. Long-term monitoring of thermo-technical properties of lightweight constructions of external walls being exposed to the real conditions. Procedia Eng. 2015;111:176–82.CrossRefGoogle Scholar
  21. 21.
    Briga-Sá A, Nascimento D, Teixeira N, Pinto J, Caldeira F, Varum H, Paiva A. Textile waste as an alternative thermal insulation building material solution. Constr Build Mater. 2013;38:155–60.  https://doi.org/10.1016/j.conbuildmat.2012.08.037.CrossRefGoogle Scholar
  22. 22.
    Vakili M, Karami M, Delfani S, Khosrojerdi S, Kalhor K. Experimental investigation and modeling of thermal conductivity of CuO–water/EG nanofluid by FFBP-ANN and multiple regressions. J Therm Anal Calorim. 2017;129(2):629–37.  https://doi.org/10.1007/s10973-017-6217-4.CrossRefGoogle Scholar
  23. 23.
    Balaji N, Mani M, Venkatarama Reddy BV. Thermal performance of the building walls. In: Preprints of the 1st IBPSA Italy conference Free University of Bozen-Bolzano, vol. 346; 2013. p. 1–7.Google Scholar
  24. 24.
    Bassiouny R, Ali MRO, NourEldeen E-SH. Modeling the thermal behavior of Egyptian perforated masonry red brick filled with material of low thermal conductivity. J Build Eng. 2016;5:158–64.CrossRefGoogle Scholar
  25. 25.
    Czajkowski Ł, Olek W, Weres J, Guzenda R. Thermal properties of wood-based panels: thermal conductivity identification with inverse modelling. Eur J Wood Wood Prod. 2016;74:577–84.  https://doi.org/10.1007/s00107-016-1021-6.CrossRefGoogle Scholar
  26. 26.
    Kain G, Lienbacher B, Barbu MC, Plank B, Richter K, Petutschnigg A. Evaluation of relationships between particle orientation and thermal conductivity in bark insulation board by means of CT and discrete modelling. Case Stud Nondestr Test Eval. 2016;6:21–9.CrossRefGoogle Scholar
  27. 27.
    ISO 8301. Thermal insulation—determination of steady-state thermal resistance and related properties—heat flow meter apparatus. International Organization for Standardization, Geneva, Switzerland 1991.Google Scholar
  28. 28.
    DIN EN 12667. Thermal performance of building materials and products—determination of thermal resistance by means of guarded hot plate and heat flow meter methods—products of high and medium thermal resistance. German Institute for Standardization, Berlin, Germany 2001.Google Scholar
  29. 29.
    Bedane AH, Afzal MT, Sokhansanj S. Simulation of temperature and moisture changes during storage of woody biomass owing to weather variability. Biomass Bioenergy. 2011;35:3147–51.CrossRefGoogle Scholar
  30. 30.
    Bryś A, Bryś J, Ostrowska-Ligeza E, Kaleta A, Górnicki K, Glowacki S, Koczon P. Wood biomass characterization by DSC or FT-IR spectroscopy. J Therm Anal Calorim. 2016;126(1):27–35.  https://doi.org/10.1007/s10973-016-5713-2.CrossRefGoogle Scholar
  31. 31.
    Modarresifar F, Bingham PA, Jubb GA. Thermal conductivity of refractory glass fibres. J Therm Anal Calorim. 2016;125(1):35–44.  https://doi.org/10.1007/s10973-016-5367-0.CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.Department of Wood Processing and Wood Products Design, Faculty of Wood EngineeringTransylvania University of BrasovBrasovRomania

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