Finned radiator and solar heating system

A solar heating system comprising:

• a plurality of fins, each fin comprising:
• a side web having front, back, vertical limiting edges, and being crossed by a horizontal plane to define a vertical center, wherein at least one of said vertical limiting edges meets said front edge at a point closer to the vertical center than a point at which said limiting edge meets said back edge;
• a back flange having vertical limiting and side edges said flange extending from said side web back edge and being provided with at least one location for a fastener at a point further from said horizontal plane than the point joining said side web vertical limiting and side edges;
• means in said side web for receiving and contacting at least one fluid carrying pipe;
• and
• a front flange extending from said side web front edge;
• a pipe having a first and second end, said pipe contacting said side web at said means;
• a vessel having an intake and outflow, said intake and outflow being connected to said first and second pipe ends;
• a circulating pump for circulating said fluid in said system;
• a heating element located within said vessel;
• and
• a solar energy collection means, said collection means being connected to said heating element.