
From all renewable energy systems I know is the solar driven pool pump system the most efficient
and economically interesting product.It pays for it's self in a few years, specially in Cyprus with
electricity prices of >29cent for one unit (KW/h).
Of course it is very important that the pump is installed from qualified plumbers and electricians which
understand their job as there are many chances that mistakes lead to problems.
Every pool is quite unique and it is necessary to find the best position for the PV Panels
and understand the different pool designs with skimmers, overflow pool, pump house lower than the pool,
sanitation systems and much more. Only a company with experience in this sector (Mechanical Installations company)
will install a solar pool pump how it should be.
I cannot believe when I read the advice of an installer to CLOSE the skimmers of the pool as the skimmers
have the task to skim and suck into the basket everything which is floating on top of the water...
There are two different solar pool pumps from Lorentz, Germany, the leading company, for pools
<80 tons of water and for larger pools any size.(various pumps in parallel)
The standard pump can circulate with 3 or 4 panels every day of the year app. 160 tons of water/day.
which means the water of a 8x4m pool goes through the filter four times.
The commercial pumps runs with 6 to 8 panels and are circulating app. 350 to 400 tons of water.
That is why the water is so clean when it is run by the power of the sun as the pump starts
working with the first daylight until dawn. This are much more hours than one can afford to
run his pool with an normal electric pump at prices per unit we have now in Cyprus.
The pumps are DC pumps and run on 3-phase DC thanks to the controller which comes with
the system. The controller also includes electronic MPPT which led the pump run always on
maximum power. DC (current) is produced from the photovoltaic panels and the pump is also DC so there
are no losses. (one of the reasons the system works so efficient) Also the pumps are brush-less which
means no wear and tear (designed for 10 years lifespan) and are very quiet compare with normal pumps.
In my opinion it is a very good investment with or without subsidy. Is there any investment on the market
which gives one more than 30% interest and this comes with guarantee as the reduced electricity bill arrive
2 month after you have installed a solar pump.
When even hotels run their pools recently with solar pumps in times of economic problems it shows it all.
Friends of mine had their holidays a couple of month ago at the Avanti complex and photographed the system.