Compact solar collector comprising a containment structure with at least a face exposed to the solar radiation, said containment structure comprising a central housing recess and an outer frame that encloses and laterally envelops said central housing recess , inside said central recess being arranged a primary storage conduit for the storage and the circulation of a primary heat transfer fluid, exposed to the solar radiation, a secondary storage conduit for the circulation and storage of a secondary fluid, and a heat exchange area between said primary and secondary storage conduits for the heat exchange between the primary heat transfer fluid and the secondary fluid, wherein said solar collector further comprises a plurality of vacuum sealed collector tubes arranged within said central housing recess , wherein each vacuum sealed tube provides a portion of said primary storage conduit which envelops a respective portion of said secondary storage conduit in heat exchange between each other, wherein said portion of the primary storage conduit is a primary storage element for containing the primary heat transfer fluid apt to store thermal energy and wherein each vacuum sealed tube provides a collecting tube , in particular made of glass, which envelops said primary storage element , and which is arranged coaxially to it, forming an insulating air gap, wherein in at least a portion of said outer frame of the containment structure at least a dissipation conduit in fluid communication with said primary storage conduit is obtained for the circulation of said primary heat transfer fluid in order to dissipate the surplus heat outwardly with respect to said solar collector , and wherein a circulator is further provided in fluid communication between the primary storage conduit and the at least dissipation conduit , said circulator being apt to set in motion the primary heat transfer fluid when the temperature of the heat transfer fluid exceeds a first pre-set value (T1), in order to allow the primary heat transfer fluid to flow and pass through the at least a dissipation conduit at a higher speed in order to reduce the temperature of the primary heat transfer fluid in order to be re-introduced subsequently in the primary storage conduit . wherein said solar collector further comprises a plurality of vacuum sealed collector tubes arranged within said central housing recess , wherein each vacuum sealed tube provides a portion of said primary storage conduit which envelops a respective portion of said secondary storage conduit in heat exchange between each other, wherein said portion of the primary storage conduit is a primary storage element for containing the primary heat transfer fluid apt to store thermal energy and wherein each vacuum sealed tube provides a collecting tube , in particular made of glass, which envelops said primary storage element , and which is arranged coaxially to it, forming an insulating air gap, wherein in at least a portion of said outer frame of the containment structure at least a dissipation conduit in fluid communication with said primary storage conduit is obtained for the circulation of said primary heat transfer fluid in order to dissipate the surplus heat outwardly with respect to said solar collector , and wherein a circulator is further provided in fluid communication between the primary storage conduit and the at least dissipation conduit , said circulator being apt to set in motion the primary heat transfer fluid when the temperature of the heat transfer fluid exceeds a first pre-set value (T1), in order to allow the primary heat transfer fluid to flow and pass through the at least a dissipation conduit at a higher speed in order to reduce the temperature of the primary heat transfer fluid in order to be re-introduced subsequently in the primary storage conduit . <EOS>