A calculation model for Trombe walls and its use as a passive cooling technique

A low energy technique for heat removal from the interior of a building under summer conditions is the employ of natural ventilation. There are several ways to promote this ventilation. The use of Trombe walls to obtain this objective is studied in the present work, with the aid of a combined mathematicaldifferences finites model. This is a transient model developed to take into account the thermal inertia of the wall and that can be easily applicable to a particular Trombe wall to estimate its behaviour. Additionally, the influence on heat balance done by different elements of the wall, and its properties was studied in a parametric work. This was done for different climates in Spain, and the results were analyzed with a new variable defined as DDD (degree-days difference). As a result of this parametric study, some guidelines of design were established in function of the climate conditions.