Energy consumption and the environment


Salty Water In...fresh Water Out

In many poor, third world countries, evenTheir technique is more energy and
having the resources to obtain electricityeconomically  efficient.
presents a problem. Due to the lack of
logistics, as well as the finances even ifTheir method, unlike the others, runs
all of the logistics were in place, alternatedirectly on wind power. The middle step of
methods are necessary in orderto have thestoring the electricity has been completely
basics that those in more financiallyeradicated from the equation. By storing
fortunate  areas  of  the  world  have.water (which is more cost-effective than the
electricity storage), calm periods, when
A recent development at Delft University ofthere is no wind, are not as dire of an
Technology (TU Delft) in the Netherlands is aissue.
basic windmill that operates a pump, in turn
utilizing reverse osmosis to output freshThe windmills that are in use for this
water from the salty seawater that is put in.process are slow-moving and strong. The
Reverse osmosis is a process used to purifyestimations that have been done up to this
concentrated solutions (often water with highpoint on the windmills in question gauge them
levels of dissolved salts) in which pressureto be able to provide drinking water for a
is applied to the more concentrated (orsmall village of around five hundred people.
contaminated) solution on one side of aThis is not per week, or per month. These
semipermeable membrane. The result is theestimates are on a per day basis through the
movement of solvent, but not solutes, fromreverse osmosis process of one windmill.
the more concentrated side to the more diluteUniversity of Delft is aware that an
side, thus separating clean solvent from theemergency supply needs to be in place to
concentrated  solution.consume during the inevitable calm periods
when the windmill is not able to use the wind
So, basically, in laymens terms, reversepower to operate the reverse osmosis
osmosis purifies the salt filled sea water soprocedure.
that it is able to be used for drinking
water. This development by Delft UniversityThe first test run for this new development
is a critical advancement for small villagesis set for the beginning of March, in which
located  in  arid  areas  near  the  coast.the windmill that has been operating near
Delft will be dismantled and relocated to
Using windmills for desalination is nothingCuracao. The prospects of this succeeding
new. These contraptions have previously beenwill be monumental for villagers who lack
utilized and have been marketed already. Thefresh irrigation and who have to employ
windmills on the market currently use wind tomanual techniques to obtain any semblance of
produce electricity, and then store thatdrinkable water. The economical aspect,
electricity in order to begin the process ofalong with the quicker, machine-operated
reverse osmosis. Due to the expensive natureabilities villagers will now have to acquire
of this, as well as the fact that energysuch a basic need, will surely have colossal
depletes during the procedure, TU Delfteffects on poorer, third world countries.
contrived a method that is a bit different.



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