My concept proposes the use of wood dust/wood shavings by filling it in hollow bricks used in construction of houses, especially for houses in non-equatorial regions where temperatures high at day and temperatures gets very low at night.
Here wood dust will be mixed with anhydrous lime to preserve it. Here there is no chance of wood dust coming out from the hollow bricks as it is completely concealed. Though wood dust has been used for use in insulation earlier but it is used below wood panels and there was always problems associated with it. Using this approach inside hollow bricks it will be highly efficient and reliable.I have not found any similar concept which uses the wood dust inside hollow bricks anywhere so this makes the concept unique.
Proof of concept
“The sawdust was tested as an insulating material in the storage system and compared in its performance with the fibreglass wool storage system for hot water applications under similar conditions. From this study, it has been observed that the sawdust storage system also gave good performance for retaining the solar heated hot water up to the following evening. The solar water heating efficiency has been found to be in the range of 46.9-47.1% (fibreglass wool storage system) compared to 46.0-46.4% (sawdust storage system). The storage efficiency of retaining the solar heat for a night duration at different intervals of storage periods was observed from 61.5 to 65.5% (fibreglass wool storage system) and from 56.8 to 64.4% (sawdust storage system). Based on these investigations, the low cost and widely available sawdust may also be successfully employed as an insulating material in solar water heaters for retaining the hot water up to the following evening.”