The invention discloses a roof truss solar-collected type
solar greenhouse, belongs to the technical field of protected
agriculture engineering, and particularly relates to a
solar greenhouse which utilizes excess
solar thermal energy collected by a roof truss in
daytime for nighttime heating or other purposes. The technical scheme comprises a heat collecting and releasing
piping system consisting of a plurality of roof trusses, a
thermal insulation water tank and the like, wherein each roof truss comprises principal rafters (1) and bottom chords (2), the principal rafters (1) and the bottom chords (2) are connected into closed loops by short pipes (3) at the top, the lower ends of all the principal rafters (1) are connected with a
water supply main
pipe (5), the lower ends of all the bottom chords (2) are connected with a backwater main
pipe (7), the
water supply main
pipe (5) is connected with a
submersible pump (11) in the
thermal insulation water tank (10), and the backwater main pipe (7) is connected into the
thermal insulation water tank (10) to form a pipe network for
water circulation. The roof truss solar-collected type
solar greenhouse is energy-saving, environmentally-friendly,
pollution-free, few in used materials, low in cost, long in service life, and simple in operation control and maintenance, and also can be used for heating
irrigation water and providing hot water for living and the like concurrently.