In many parts of the world, water for sanitation irrigation and potable water is scarce, Ever increasing urbanization and concentration of people crammed together in shanty towns, without income for paying the ever increasing price to have access to community provided and fresh potable water.
Also vegetable prices go higher because of higher cost of growing crops, that can be hampering the nutrition need for various areas, in different countries, around the world.
All that is offered is desalination plants of industrial scale size, working with osmosis and other high tech, high cost means of producing water for the needs of the people.
Since we live on a water planet, that is consisting roughly 70% water, how can this be? 2015 Stefan Nyström invented a new approach to this problem, to make semi industrial, but still on a tech level of possible “do it yourself” level of construction.
Above is the solution, an high powered desalination plant producing large volumes of water, for pennies per liter, for a relatively low initial investment, water can be produced, that will also cover irrigation for produce crops, as well as showering, cleaning clothes and personal hygiene, cooking.
The end user cost for this apparatus is 5000 USD, the production cost for parts, (not included labor) is 2400 USD, the water production capability is 190 liters of fresh water to be used for every day need. As for the western world, a New York person is using up 175 Liters of water per day, but in poorer parts of the world, maximum access would be less than 30 liters for a whole family.
If one craft this piece of technology by himself, the cost for the daily water delivered is 0,25 USD If bought by manufacturer, price would double to 0,5 USD for 190 liters of water daily. That makes a 10th of a cent per liter water. 0.0013157 USD per liter. Lifespan would be 50 Years plus, with replacement of certain parts.
This means large scale irrigation of large areas can be done if financing is provided by larger entities, like governments, companies, or communities. Abundance of food of any variety, can be produced and at low cost.
Now to the technology. Below is a picture of a stripped backside of the water plant.
On the topside, the salty seawater is circulated and flows down to the lower end of the square channel, to be pumped up again and flowing down in an looping manner. This channel is connected, and has one of the walls, being directly exposed to sunlight. The upper area is made out of Marine Grade Durable Aluminum, that wont degrade in Saltwater conditions, the better, but more expensive option would be to go for copper, which is not affected at all by salt water.
The lower end of the construction, here seen above ground for demonstration is made by standard underground classed PVC black or grey water pipe 150MM diameter, this is connected to the above channels that is heated by the incoming solar energy, and has a counter cross-flow, regarding to the flow of the water.
When the water inside the square upper compartment is picking up energy from the solar side of the water plant, it heats up and start saturating the counter flowing air inside the channel.
Humidity will rise to 100% and is pushed inside the system by an inline duct fan, always forcing the air to circulate withing upper and lower channel.
In reality, the lower part of the plant is dug down in angle to suit the best possible solar intake possible, like in the picture below.
The humid air is forced to the lower end PVC pipe condensing part of the construction. Since it will be much colder underground than the temperature of the saturated air is when in contact by the heated water, it will condense when the surrounding gravel, or sand is always leading heat away from the PVC pipes. at the lowest point, freshwater is pumped out, as it is produced.
A regular solar voltaic panel is creating the energy needed for blowing the as well as pumping water from the sea, and the circulating of the same in the upper compartment. Also holding tanks, battery and electrical control unit for measuring production as well as after the sun has gone down, automatic flushing of the saltwater compartments is done to prevent buildup of minerals on the inside walls.
The construction holding all together is made of saltwater classed impregnated wood, that will have a lifespan of +30 years.
The front side can be glass, but also UV graded transparent plastics, since the area is very large, it will be abundance of energy to heat relatively small amounts of water, so hence efficiency is of no importance here. The solar collector in this example measures 6×2 meters, and have 30KW incoming solar energy per hour.
The Electrovoltaic is a 250Watt rated panel, that has sinus inverter, and circulating pumps is 220V aswell as fans. Other options is possible.
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.
Water scarcity must end, do your part. Tweet and, spread the message, abundance of cheap solar produced is here, help it come to fruition.