Flexible insulation nonwoven panel made of:
- 100% recycled polyethylene terephthalate (PET) fibers;
- Thermo-regulating microencapsulated phase change materials (mPCMs) and flame retardant coatings.
‘Thermal Buildings’ software was developed during the project for the computation of the thermal performance of cuboid buildings with multilayer walls containing insulating panels with layers of Phase Change Materials (PCM). The application can compute heat losses of a building (heating and cooling loads) and other parameters for user specified weather conditions. The software helps in making comparisons of performance of the StorePET insulating panels with traditional insulating materials.
Conventional nonwovens were manufactured starting from recycled PET and were treated by spray deposition with mPCM to confer heat storage properties.
A prototype line production has been set-up to produce ready-to-use panels for the installation in lightweight building demo houses to assess its thermal performance.
Although lightweight constructions represent an ever more economical alternative to traditional buildings, one of their main drawbacks is related with the high energy load levels needed to keep indoor comfort conditions, as they are unable to curb effectively rapid swings of outdoors temperature because of their lack of thermal mass. StorePET combines fiber insulation and phase change materials (PCMs) with heat storage capacity on a single product that can be effectively tailored for each location climate needs. During the day, when temperature rises, the peak loads can be largely absorbed by a PCM-enhanced fiber insulation layer, only to be slowly discharged back later to the environment, during the night, when outside temperature drops, without significantly affecting the interior building energy balance.