Design recommendations for heat discharge systems in walls

When the design of an in-wall heat discharge system (HDS) is inappropriate, the heat stored in the system is not completely discharged into the environment, therefore an excess flow of heat is transferred to the space where the internal temperature is to be modified. This study presents the results obtained by modifying the design conditions of an HDS, the purpose being to prevent the design of the system from contributing to the overheating of the controlled space. Considered in the design modifications was: the separation between the plates that form the air channel, height and width of the system, dimensions of the opening of the air channel intake and the heat storing capacity of the storage plate. After making these variations to the analytic model, this study concludes that it is advisable to increase both the width of the system and the opening of the air channel intake, thus allowing for a greater flow of ventilation air within the system without overheating either the heat storage plate or the interior of the controlled space.