Melting latent-heat heat or cold exchanger-storage device

A heat or cold exchanger and storage device operable according to the melting latent heat effect, said device comprising:

• an elongated main container divided into two halves by a longitudinal partition to create two chambers connected at one end of said main container;
• a plurality of elementary containers stacked in said two chambers in a manner such that a heat carrier medium circulated through said chambers will pass around said elementary containers and will meet a homogeneous resistance;
• each said elementary container comprising a pair of semi-spherical elements so shaped such that when assembled there will be a gap therebetween permitting circulation therethrough of the heat carrier medium;
• each said element being filled with a heat and/or cold storage medium capable of generating a substantial quantity of heat when melting;
• each said element being formed of a deformable material capable of absorbing volumetric variations resulting from crystallization;
• and
• each said element containing therein an air pocket to produce an expansion inherent to the device.