Abstract: This invention refers to an improved solar fluid heater with respect to the one submitted in patent application MX/a/2010/005129, which main improvement consist of a protective elastic membrane in the solar collector, allowing for the heating of any kind of liquid besides water, in which the solar collector design allows for the reception of solar radiation in its surface both, vertical and horizontal, wherein the horizontal surface heat is conveyed to the fluid through a central tubular axle with ribs, in which the air in the gap between the solar collector and the transparent cover has been replaced by argon, wherein the check valves have been designed with an anti-clogging system, that the cold and hot water supply system have been optimized and wherein the overpressure system is now powered by a photovoltaic panel built-in the solar heater object this invention.

Abstract: In one aspect, the present disclosure includes a solar fluid preheating system having a storage heater tank configured to store fluid which is in the process of being heated. The storage heater tank is encased by a cover, thereby creating an aperture extending therebetween. In another aspect, the solar fluid preheating system includes a nanoimprint lithographic layer having a plurality of nanolenses configured to concentrate and accelerate solar radiation rays. In a further aspect, the solar fluid preheating system includes a fluid vacuum system in fluidic commutation with the storage heater tank.

Abstract: Some embodiments of the invention relate to a solar preheater having a central body, which includes a base and an outer cover, wherein the base is arranged to receive the outer cover. The solar preheater includes a first thermal collection mechanism and a second thermal collection mechanism.