The use of fibre-reintbrced interlayer structures as coatings is very spread in building refurbishment,but it is important to find effective solutions both for mechanical and thermal performance. In the present paper the thermal behaviour of innovative fiber-reinforced coatings was investigated in order to find the best solutions in toms of mechanical strength and energy saving in buildings. Four different coatings (with and without the internal reinforced structure) were considered and their thermal conductivities were preliminary investigated by using an innovative measurement apparatus (Small Hot Box). A thermal analysis was carried out for the evaluation of the effects of the coatings on the building envelope, especially the thermal transmittance, calculated for different thickness. Preliminary results showed that 3-4 cm of coatings allowed to reduce thermal transmittance of building envelope by about 60-70%. In order to evaluate the energy saving, one building was considered and simulated by means of Trnsys software: it was chosen for the evaluation of the refurbishment of the building by using the selected solutions. The simulation model was implemented in SketchUp and the energy demand with and without the innovative coatings was simulated; the simulation model was also used for the evaluation of enemy saving in different climate conditions. Results show that for two coatings an important reduction of the heat loss through of the building envelope can be obtained.
Thermal behaviour and energy saving evaluation of innovative reinforced coatings
BURATTI, Cinzia
;BELLONI, ELISA;MORETTI, ELISA;PALLADINO, DOMENICO;VERGONI, MARCO
2015
Abstract
The use of fibre-reintbrced interlayer structures as coatings is very spread in building refurbishment,but it is important to find effective solutions both for mechanical and thermal performance. In the present paper the thermal behaviour of innovative fiber-reinforced coatings was investigated in order to find the best solutions in toms of mechanical strength and energy saving in buildings. Four different coatings (with and without the internal reinforced structure) were considered and their thermal conductivities were preliminary investigated by using an innovative measurement apparatus (Small Hot Box). A thermal analysis was carried out for the evaluation of the effects of the coatings on the building envelope, especially the thermal transmittance, calculated for different thickness. Preliminary results showed that 3-4 cm of coatings allowed to reduce thermal transmittance of building envelope by about 60-70%. In order to evaluate the energy saving, one building was considered and simulated by means of Trnsys software: it was chosen for the evaluation of the refurbishment of the building by using the selected solutions. The simulation model was implemented in SketchUp and the energy demand with and without the innovative coatings was simulated; the simulation model was also used for the evaluation of enemy saving in different climate conditions. Results show that for two coatings an important reduction of the heat loss through of the building envelope can be obtained.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
