11 Apparatus for heating, in particular those comprising solar technology apparatus and/or heat pumps, namely, solar water heaters and heat pumps; Solar collectors for heating, cooling, water heating, solar flat collectors, solar vacuum tube collectors, solar storage collectors; Solar thermal installations, namely, solar thermal modules; Solar collectors for use in swimming pools and thermal siphon systems; [ Apparatus for steam generating, cooking, drying and ventilating, namely, solar boilers, solar thermal collectors, solar energy receivers, namely, solar absorbers and ventilators; ] Apparatus and systems for converting and storing sunlight by means of physical, biological, or chemical methods for heating purposes and/or water heating and parts thereof, namely, solar collectors and heat exchangers; Solar CPC, namely, compound parabolic concentrators reflectors for concentrating and reflecting solar rays [ ; Air conditioning and ventilating apparatus, namely, ventilators for cooling or heating; Apparatus for heat recovery, namely, ventilators for heating featuring an incorporated waste air heat exchanger ]