The model results indicate that the best thermal performance is obtained when insulation is placed outside the wall. The permeable insulations (cork and hemp) tend to perform better with earth than with brick, which is attributed to a more compatible hydric performance. This is attributed to the lower diffusivity of the earth walls attenuating external temperature fluctuation and economizing energy. The insulated earth buildings require less energy for heating and are responsible for lower carbon emissions than the insulated brick buildings. The model results highlight the importance of the hygrothermal properties of the insulation, and their compatibility with the substrate, for best energy performance. Layers per Viewport In AutoCAD 2008 the has been enhanced to allow users to specify color, line weight, linetype, or plot style as an override for an individual viewport.

Out of all the insulations, cellulose fibre showed the best overall performance. Please check with your school or your Autodesk Reseller about purchasing one or more of the above suites or Ecotect Analysis with subscription. The input data and weightings can be modified easily to investigate new materials and to meet user requirements. A new scoring tool is created which allows inputted data, across the three areas of performance (energy, environmental, economic), to be standardized and compared, providing a final score that represents the overall performance. The environmental performance of the insulation is determined using the Life Cycle Assessment-LCA-technique. The combined results ( Table 5 ), show that the best materials are cellulose, rock wool and recycled cotton (Epotex), which have lower manufacturing cost while also keeping. The thermal performance of insulations (natural, petrochemical, rock/slag based) is modelled, on brick, rammed earth (RE) and cavity walls, in different locations (external, internal and inside the wall), using software. The cost of space heating ranges from 1500 - 2000, which is slightly higher than real-life costs due to the IES-VE model simplifications as explained earlier. This paper investigates insulation performance in terms of heating energy requirement, environmental impact and cost. The need for the selection of an appropriate insulation is becoming more important as environmental problems continue to grow.

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