Definitions for "PASSIVE SOLAR SYSTEM"
A system that relies on the natural phenomena of energy (radiation, convection, and conduction) for the transfer and storage of heat or "coolness." Some basic elements of a passive solar system are south-facing glazing for solar collection and thermal mass for absorption, storage and distribution.
a design that allows for the entrapment and transfer of heat from the sun to a building without the use of moving parts or machinery
a non - mechanical solar heating and cooling system