(EP593649-A1)      A mover allows adjustment of the collector units, and an absorber is mounted on a receiving insolation part. Heat utilisers are connected to a conduit network comprising forward and back ducts. A heat vehicle circulates in the network which is fitted with circulation control valves.    At least one cooking range (71) has hollow hot plates (71a) between the forward (4) and back (5) ducts. The hollow of the hot plate includes a baffle and a flow control piece whilst the hot plate is fitted with a valve for adjusting the volume of heat vehicle flowing.    ADVANTAGE -   Exploitation of solar energy to provide heat or electricity at increased efficiency. Requires no other power source. Collector unit, upon breakdown, may be turned to position preventing overheating.    (JP6509159-W)      A mover allows adjustment of the collector units, and an absorber is mounted on a receiving insolation part. Heat utilisers are connected to a conduit network comprising forward and back ducts. A heat vehicle circulates in the network which is fitted with circulation control valves.    At least one cooking range (71) has hollow hot plates (71a) between the forward (4) and back (5) ducts. The hollow of the hot plate includes a baffle and a flow control piece whilst the hot plate is fitted with a valve for adjusting the volume of heat vehicle flowing.    ADVANTAGE -   Exploitation of solar energy to provide heat or electricity at increased efficiency. Requires no other power source. Collector unit, upon breakdown, may be turned to position preventing overheating.    (EP593649-B1)      A mover allows adjustment of the collector units, and an absorber is mounted on a receiving insolation part. Heat utilisers are connected to a conduit network comprising forward and back ducts. A heat vehicle circulates in the network which is fitted with circulation control valves.    At least one cooking range (71) has hollow hot plates (71a) between the forward (4) and back (5) ducts. The hollow of the hot plate includes a baffle and a flow control piece whilst the hot plate is fitted with a valve for adjusting the volume of heat vehicle flowing.    ADVANTAGE -   Exploitation of solar energy to provide heat or electricity at increased efficiency. Requires no other power source. Collector unit, upon breakdown, may be turned to position preventing overheating.