AIR PIT Russian patent published in 1995 - IPC

FIELD: ventilation systems. SUBSTANCE: panel being transparent to solar radiation is disposed at south side. Heat-conducting screen covered with light-absorbing coating is mounted at central part of the pit in parallel to transparent panel. Umbrella is made in form of gable roof mounted on the posts which are fastened to walls of the pit. South pitch of the roof is transparent to solar radiation. V-shaped air stream dissector is made of heat-conducting material and is mounted under the roof with its point down and attached to the roof. Surface of the dissector which is turned to pitches of the roof is covered with light-absorbing layer. EFFECT: improved efficiency. 1 dwg