In tropical countries, cheap do it yourself solar, can provide access to abundance of hot water, to eliminate, disease, better hygiene, and overall, better lifestyle. Since its already hot to very hot, heat loss of conduction is a minor problem, if enough area is present to collect solar energy. “Cheap Sheet Solar” invented by Stefan Nyström 2017, can be used to let anyone reap the benefit of low cost everlasting energy abundance.
For many, the cheapest and best roof covering, is sheets of metals, that can readily and easily be converted to solar collectors.
During sunny weather temperature is good enough to fry an egg, on the rooftop sheeting, and the main idea here is to convert this energy, to hot water, that can be used for washing clothes, showering etc.
The roof itself, is already paid for, so what is needed is the means to collect the incoming energy and put it to storage for use later, i n the night, or next day.
In next picture shows a typical sheet that is used for rooftops:
All that is needed to convert the metal sheet is a couple of screws, copper pie, and a slab of concrete.
1 meter pieces of copper piping, is molded inside the underside of the rooftop sheet, 3 screws is placed form the upside, down into the casting, to hold the pipe and the concrete, in future, since the metal will expand heavily, in time, concrete will not be attached firmly anymore, and the screws holds it tight to the metal.
What we want to use is this type of screw, preferable stainless steel, with seal, so no water enters the hole and drips into the house.
Here is a CAD drawing of how the copper pipe and concrete would look, the shape would vary depending on the profile of the sheet.,
The cioncrete will secure the pipe, and act as a heat sink, to draw energy from the hot roof.
Therefore we want shorter pieces to cover a larger area, to get higher amount of incoming energy translated to the water running in the pipes. Next picture shows the underside with the casted copper pipe, preferably, this casting should be done before the sheet is attached, but can also be done onsite, without removing the sheets.
In tropical areas the typical incoming energy is high: over 2 Kw per meter square, per hour, even higher numbers can be achieved, during summers hottest days. The sheet in the picture below, showing the sheet upside down,with fitted pipes, 4×1 M, measures 2,4×1,2 meters, and therefore has an area of 2,88m2
This gives that the incoming energy, on this sheet alone, is around 5,76KW per hour, even more so during peak sunshine.
Preferable silicone flexible tubing is used to connect the pipes together, and stone wool insulation can be added, to lower the room temperature blow, however, since the heat is transported into a storage tank, as in a insulated pvc barrel for cheapest option, or an regular solar tank, that also can have additional electric heater element for rainy periods, when sunshine is not prevalent.
Tabk above is around 200 USD from China.
A makeshift expansion ability for the water inside the closed loop energy transfer can be done to let one piece of the hose go upwards to the highest point of the roof.
Secondly a circulating pump and solar controller is added, to control the fluid transporting the energy to the tank.
Cost is around 20 to 30 USD for this controller, found here:
High temp 12V circulating pumps can be found by searching this link:
One can only imagine of this technology is applied to industrial buildings, and can readily be converted also to electricity, by the upcoming release of the Low thermal displacement, generator.
Investors are needed, contact me for more information, many projects of this type and of greater magnitude is already developed. Lack of funds has stalled my projects.
As of this i release the technology for free, for anyone to use, more details can of course be added to the technologies, but for this i cannot maintain at no cost operation. So if you are prepared to add some funding in the mix many aspects of the development, manufacturing etc can be avoided. Feel free to contact me.
Energy hegemony must end, do your part. Tweet and retweet, spread the message, abundance of cheap solar is here, help it come to fruition.