Brazilian and US researchers evaluated the water evaporation price of a floating PV system in a Brazilian reservoir. They stated the 130 kW set up lowered evaporation by 60%, and claimed that the 5 MW system may save sufficient water for 196 individuals per yr.
From pv journal Brasil
Scientists from the State College of Ponta Grossa in Brazil and the College of Louisiana in the USA collectively investigated the impact of floating photo voltaic on the water evaporation price in reservoirs.
They used the 130 kW photo voltaic system within the Passaúna reservoir within the Brazilian state of Paraná as a case research. The reservoir covers an space of 8.5 sq. kilometers and has a median depth of 6.5 meters. Its whole quantity is 69.3 cubic hectometers (hm3).
The system occupies an space of 1,265.14 sq. meters and has 395 PV modules. The polycrystalline modules have a most energy ranking of 330 W and measure 1,960 mm x 991 mm x 40 mm.
The reservoir borders the cities of Curitiba, Araucária, and Campo Largo, and provides 20% of the water utilized by the inhabitants of the metropolitan area of Curitiba, Paraná. The researchers used the Penmam-Monteith technique advisable by the United Nations Meals and Agriculture Group to measure the speed of water evaporation.
They discovered that 4.47 million cubic meters (m3) of water evaporated from the reservoir in a single yr, equal to 10.4% of the quantity of water used yearly by the native inhabitants. The group calculated that the floating photo voltaic system reduces water evaporation with an effectivity of 60.20%.
In addition they studied the impact of various PV system sizes on the speed of water evaporation.
“The bigger the realm of the floating photo voltaic system above the water, the larger the discount in water evaporation and, thus, the larger the quantity of water saved,” the researchers stated.
The outcomes present that the 5 MW system can save about 16,000 m3 of water per yr, which is equal to the water utilized by 196 individuals within the area per yr. The electrical energy produced by the system may cowl the consumption of two,563 inhabitants of the state of Paraná, assuming a per capita consumption of 1.95 kWh.
The researchers shared their ends in “Results of a Floating Photovoltaic System on the Price of Water Evaporation within the Passaúna Reservoir, Brazil,” which was not too long ago printed in Strengths.
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