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Towards Thermal Insulation and Energy Performance's Assessment of a Mycelium-Based Composite Wall for Eventual Sustainable Use in Buildings

SSRN, ISSN: 1556-5068
2023
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Usage
    202
    • Abstract Views
      151
    • Downloads
      51
  • Ratings
    • Download Rank
      789,771

Article Description

Since buildings are associated with a large share of energy consumption, their thermal insulation is a paramount parameter. This can be achieved by integrating eco-friendly materials into building envelopes to mitigate energy consumption. In this context, the proposed study aims to numerically examine the thermal insulation and energy performance of an eco-friendly insulated wall incorporating mycelium and facing south in Marrakech city (Southwestern Morocco) using 2D CFD simulations. The computations are carried out via the CFD software Ansys/Fluent 19.0. The findings were compared to those for the no-insulated wall deemed as benchmark (case #1) in terms of temperatures, transmission loads and the insulation thickness effect. As expected, it was confirmed that the insulated mycelium-based wall (case #2) is more efficient than the uninsulated wall (case #1).First, the time lag and the decrement factor are studied to assess the dynamic thermal behavior of a multi-layer wall insulated with the mycelium. Thereby, based on a life cycle cost analysis (LCCA), the optimum thickness of the mycelium has been turned out to be 0.08 m, and energy saving improved by 87.4% in winter and 55.9% in summer. Besides, in the last time (t = 72h) of simulation, the inner surface temperature decreased by about 4°C and increased by about 1°C during summer and winter days, respectively. Further, the thickness effect on the energy coating increased from 56% to 93% (~1.7 fold).Through these results, it can be concluded that the proposed design could be an appropriate solution for dry and hot semi-arid or even arid climates.

Bibliographic Details

Mohammed Fellah; Naoual Belouaggadia; Khalifa Mansouri; Salma Ouhaibi; Hassane Naji

Elsevier BV

Multidisciplinary; thermal insulation; building envelope; eco-friendly material; mycelium; heating and cooling loads; CFD simulation

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