Thermal barrier for ventilated roofs
AssigneeUniversita' Degli Studi Di Ferrara
InventorMichele Bottarelli
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Abstract
A system and a method are described for the passive conditioning of internal environments having ventilated roofs as coverings; the method involves absorbing at least part of the heat coming from the external environment during the hottest hours of the day, so as to reduce the heat entering the environment to be conditioned and transferring the absorbed heat back to the external environment during the night, the absorption being implemented through Phase Change Materials, PCM, in which the heat exchange between PCMs and the external environment is favored by an air current that is generated spontaneously due to the effect of natural thermal gradients.
Claims7
A system for a passive conditioning of internal environments having ventilated roofs for covering, of a type comprising one or more ventilation chambers placed under a waterproof roofing mantle, the one or more ventilation chambers having the function of dissipating part of heat entering the environment to be conditioned,
- the system further comprises a plurality of containers containing Phase Change Materials, PCM, positioned inside the one or more ventilation chambers, the containers of PCMs being in a heat exchange relationship with air present inside the one or more ventilation chambers;
- wherein:
- the containers are installed in a center of a ventilation channel suspended between tiles and an underlying support layer, so that a ventilation air flow completely envelops the containers;
- the system further comprises perforated metal profiles to which supports are fixed on which the PCM containers lean;
- and
- the supports comprise a bar fixed, one third of its length, to an element on which there are anchors which, made to pass through holes in the metal profile and inserted in an opposing element, prevent its movement.
Dependencies are inferred from the claim text.