Experimental and numerical investigations on the thermal performance of hemp such a bio-sourced insulation material: application to a Moroccan Mediterranean climate

  • Authors

    • Maryam Dlimi Science Faculty of Meknes
    • Omar Iken
    • Rachid Agounoun
    • Amine Zoubir
    • Khalid Sbai
    2018-02-14
    https://doi.org/10.14419/ijet.v7i1.9090
  • Decrement Factor, Heating & Cooling Loads, Hemp, Morocco, Thermal Insulation, Time Lag.
  • Thermal performance of hemp concrete and hemp wool such as ecological insulation was evaluated for the city of Meknes in Morocco, in comparison with polystyrene which is an organic insulation material. The study was done in three sections. First, a thermo-physical properties characterization was done using the EI700 device. Then, the study was done on a concrete wall subjected to periodic outdoor conditions. The three insulation materials are used and the effects of thickness, location and partitioning on the time lag and decrement factor were investigated. Finally, heating and cooling loads of a whole building with the use of six different walls configurations are calculated using TRNSYS software. Throughout the whole study, results show that hemp wool presented the best thermal performance, and the evaluation of its use such us an insulation material in Morocco and especially in Meknes was investigated.

  • References

    1. [1] ADEREE, Les éléments techniques du projet de la réglementation thermique du bâtiment au Maroc, (2011).

      [2] Ä°.Ayçam, M.Tuna, “Evaluation of Insulation Materials in the Context of Sustainability Criteriaâ€, Asian Transactions on Basic and Applied Sciences, 2013.

      [3] A. Bojan., C. Aciu, “Optimal Technologies for External Thermal Insulation with Polystyrene Panels for Different Support Materials,†Procedia Technology, 2015.

      [4] E. Latif, S. Tucker, M.A. Ciupala, D.C. Wiyjeyesekera, D. Newport, “Hygric properties of five hemp bio-insulations with different compositions,†Construction and Building Materials 66:702-711,September 2014.https://doi.org/10.1016/j.conbuildmat.2014.06.021.

      [5] M. Boumhaout, L. Boukhattem, F. AitNouh, H. Hamdi, B. Benhamou, “Energy efficiency in buildings: thermophysical characterization of building materials,†Int. Renewable and Sustainable Energy Conf. IRSEC2013, (7-9 March 2013)Ouarzazate (Morocco).https://doi.org/10.1109/IRSEC.2013.6529675.

      [6] M. Lachi, A. Degiovanni, “Influence de l'erreur de mesure de température de surface par thermocouples de contact sur la détermination de la diffusivité thermique par méthode « flash » â€, J. Phys. III France 2, (1992) 2247.https://doi.org/10.1051/jp3:1992244.

      [7] K.S. Reddy, S. Jayachandran , “Investigations on design and construction of a square guarded hot plate (SGHP) apparatus for thermal conductivity measurement of insulation materials,†International Journal of Thermal Sciences, Volume 120, (October 2017), pp. 136-147.https://doi.org/10.1016/j.ijthermalsci.2017.06.001.

      [8] P. Gong, G. Wang, M.P. Tran, P. Buahom, S. Zhai, G. Li, C.B. Park, “Advanced bimodal polystyrene/multi-walled carbon nanotube nanocomposite foams for thermal insulation,†Carbon, Volume 120, (August 2017), pp. 1-10. https://doi.org/10.1016/j.carbon.2017.05.029.

      [9] R. Bevan, T. Woolley, “Hemp lime construction: a guide to building with hemp lime composites,†Bracknell: IHS BRE Press; 2008.

      [10] H. Asan, “Numerical computation of time lag and decrement factors for different building materialsâ€, Building and Environment 41(2006), pp. 615–620.https://doi.org/10.1016/j.buildenv.2005.02.020.

      [11] K.J. Kontoleon, E.A. Eumorfopoulou, “The influence of wall orientation and exterior surface solar absorptivity on time lag and decrement factor in the Greek regionâ€, Renewable Energy 33 (2008), pp.1652–1664.https://doi.org/10.1016/j.renene.2007.09.008.

      [12] C. Sun, S.Shu, G.Ding, X. Zhang, X.Hu, “Investigation of time lags and decrement factors for different building outside temperaturesâ€, Energy and Buildings 61 (2013), pp. 1–7.https://doi.org/10.1016/j.enbuild.2013.02.003.

      [13] MN.Ozısık, “Finite Difference Methods in Heat Transferâ€, CRC Pres, 1994.

      [14] B. Belhadj, M. Bederina, Z. Makhloufi, A. Goullieux, M. Quéneudec, “Study of the thermal performances of an exterior wall of barley strawsand concrete in an arid environmentâ€, Energy and Buildings 87, (2015), pp. 166–175.https://doi.org/10.1016/j.enbuild.2014.11.034.

      [15] X.Jin, X.Zhang, Y.Cao, G.Wang, “Thermal performance evaluation of the wall using heat flux time lag and decrement factorâ€, Energy and Buildings 47, (2012), pp. 369–374.https://doi.org/10.1016/j.enbuild.2011.12.010.

      [16] C. Maalouf, A.D. Tran Le, L. Chahwane, M. Lachi, E. Wurtz, T.H. Mai, “A study of the use of thermal inertia in simple layer walls and its application to the use of a vegetal fiber material in buildingsâ€, International Journal of Energy, Environment and Economics, January 2011.

      [17] S.A.Al-Sanea, M.F.Zedan, “Improving thermal performance of building walls by optimizing insulation layer distribution and thickness for same thermal massâ€, Appl. Energy 88 (2011), pp.3113-3124.https://doi.org/10.1016/j.apenergy.2011.02.036.

      [18] D.E.M Bond, W.W.Clark, M. Kimber, “Configuring wall layers for improved insulation performanceâ€, Appl. Energy 112 (2013), pp.235-245.https://doi.org/10.1016/j.apenergy.2013.06.024.

      [19] P.Gori, C.Guattari, L.Evangelisti, F.Asdrubali, “Design criteria for improving insulation effectiveness of multilayer wallsâ€, International Journal of Heat and Mass Transfer 103 (2016), pp. 349–359.https://doi.org/10.1016/j.ijheatmasstransfer.2016.07.077.

      [20] E.Kossecka, J.Kosny, “Influence of insulation configuration on heating and cooling loads in a continuously used buildingâ€, Energy and Buildings 34 (2002), pp. 321–331.https://doi.org/10.1016/S0378-7788(01)00121-9.

      [21] Z.Romani, A.Draoui, F.Allard, “Metamodeling the heating and cooling energy needs and simultaneous building envelope optimization for low energy building design in Moroccoâ€, Energy and Buildings, Vol.102, (2015), pp. 139-148.https://doi.org/10.1016/j.enbuild.2015.04.014.

      [22] S. Klein, et al., “A Transient System Simulation Programâ€, Solar Energy Laboratory, University of Wisconsin-Madison, Madison, WI, USA, 2000.

      [23] Thermal Building Regulations in Morocco, ADEREE Morocco.

      [24] B.Benhamou, A.Bennouna, “Energy Performances of a Passive Building inMarrakech:Parametric Studyâ€, Energy Procedia 42, ( 2013 ), pp. 624 – 632.https://doi.org/10.1016/j.egypro.2013.11.064.

      [25] R. Guechchati, M. A. Moussaoui, Ahm. Mezrhab, and Abd. Mezrhab, “Reducing Energy Consumption of Habitat Located in Eastern Region of Moroccoâ€, Applied Solar Energy, (2012), Vol. 48, No. 1, pp. 33–37.https://doi.org/10.3103/S0003701X12010069.

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  • How to Cite

    Dlimi, M., Iken, O., Agounoun, R., Zoubir, A., & Sbai, K. (2018). Experimental and numerical investigations on the thermal performance of hemp such a bio-sourced insulation material: application to a Moroccan Mediterranean climate. International Journal of Engineering & Technology, 7(1), 157-164. https://doi.org/10.14419/ijet.v7i1.9090