Experimental and numerical investigation of transparent insulation material to enhance the heating performance of an innovative Trombe Wall in Mediterranean climates

An innovative fa & ccedil;ade system in which the roof and side walls are transparent to solar radiation, with transparent insulating material parallel slats (TIM-PS) embedded between the glass fa & ccedil;ade and the solid wall, is proposed as a strategy to effectively reduce convective losses and intensify solar radiation penetration. This study proposes the validation of a model equipped with glass side walls and roof, using data provided by an experimental device. A numerical study was then carried out to investigate the effect of the TIM-PS included in the air duct and how the position of slats affects the performance of the proposed solution. The Optimal design is a T-T-W featuring with -45 degrees TIM-PS. For the innovative T-T-W equipped with -45 degrees TIM-PS heating duration has been extended by two hours. This original model allowed raising the thermal efficiency at 17H from 5% provided by the normal T-T-W up to 40%.