The invention relates to a
clean water production
system (1) having a water
evaporation device (10) which can be arranged to float on a water surface (11), in particular the sea water surface, and which has a
concentrator system (3) for densifying and directing sun rays (8) onto a water surface region (11) within the floating frame arrangement (2) and has a
water supply device (12) which is arranged between the water surface (11) and the water surface region (11') exposed to the concentrated sun rays and is designed for metered supply of water from the water surface (11) into the irradiated water surface region (11') so that water is evaporated in the irradiated water surface region (11') by the
thermal energy of the concentrated sun rays (8'), wherein the
clean water production
system (1) further has a drainage device by means of which the evaporated water can be supplied to a
clean water collection point, in particular via a condensation device (7), and has at least one mechanically and functionally integrated
hydrogen production device (40) and / or a photovoltaic device (7). The clean
water production system (1) consists of a plurality of modules (14) which are held together by means of a floating frame arrangement (2), wherein at least one module is designed as an A type, which comprises a water
evaporation device (10), and at least one further module is designed as a B type, which comprises a photovoltaic device (7), or is designed as a C type, which comprises a
hydrogen production device (40), or a plurality of further modules are present, at least one of which is designed as a B type module and at least one of which is designed as a C type module.