solar ponds maya braun (israel) adam lipecz (hungary) samuel nel·lo deakin (spain) featuring: the...
TRANSCRIPT
Solar Ponds
Maya Braun (Israel)Adam Lipecz (Hungary)Samuel Nel·lo Deakin (Spain)
Featuring:The Zebra Layer
What is a solar pond?What is a solar pond?
A pool of saltwater which acts as a large-scale solar thermal energy collector
It includes an integral heat storage for supplying thermal energy
How do solar ponds produce How do solar ponds produce electricityelectricity
The fluid inside the pipes turns into
steam
The fluid inside the pipes turns into
steam
The steam moves the turbine
The steam moves the turbine
The turbine produces electricity
The turbine produces electricity
The water in the lowest layer heats up
to ≈90°C
The water in the lowest layer heats up
to ≈90°C
Essential requirements Essential requirements for a solar pondfor a solar pond
Space Water
SunSalt
Energy ComparisonEnergy Comparison
Energy Source Generating Cost (Euro per kWh)
Range of Power
Oil 0.25 1kW-10MWCoal 0.03 1MW-1GWGas 0.03 1MW-1GWSolar PV 0.80 10W-10MWWind 0.07 100W-100MWBiomass 0.04 1kW-150MWSolar Pond 0.133 1kW-5MW (unlimited)
Advantages
Environment friendly energy – no pollution!
Reliable energy source
Stores heat, so it can be used 24/7/365
Can be constructed according to
requirements
Low maintenance costs
Disadvantages
Localized
Low efficiency
Space availability
Salt and water supply
Low efficiency due to:
o Heat losses
o Bottom losses
o Top losses
o Radiation losses
EfficiencyEfficiency
Our Solution Is…Our Solution Is…
Improving the efficiency!Improving the efficiency!Decreasing the heat losses (bottom & sides)Decreasing the heat losses (bottom & sides)
The Zebra Layer®The Zebra Layer®All In One solution
Insulation + heat exchanging pipes
People can easily and fast build new Solar pondsJust lay down the foilCreate the salinity gradientYour Solar pond is ready to use!
Really cheap
ConclusionsConclusions
We hope and believe that solar ponds have the potential to become an important source of energy in certain areas, and that the zebra
layer will improve their functioning.
Reasons of solar ponds failure
Our “zebra layer” solar pond
Complicated installation Easy to buildNot efficient enough (only 17%)
MORE EFFICIENT!!!