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Warning: Results are approximate, it is recommended to doublecheck with sales representative and validate your installation before buying materials.
Here we are looking for the power (peak, expressed in W) from solar panels to be mounted to fulfill your needs according to your geographical location. The formula is as follow :
Pp = Dn / (Yb X Yi X Rd)
In your case, result is :
Pp = 240 / (0.85 * 0.87 * 0.8) = 406 W
Photovoltaic panels produce electricity from sunlight (solar radiation).
De acordo com os dados que introduziu, 406W do painel solar são necessárias para satisfazer as suas necessidades diárias de 240Wh/d.
Ver e compreender o procedimento, o cálculo
Uma possibilidade seria2 painel(s)monocristalin de 240W cada (?). Que ampliam a capacidade da unidade 480W
Nós estamos aqui procurando a capacidade nominal expressada em amperes por hora (Ah, desde que em C10)
Cap = (Dn x Aut) / (DD x U)
In your case, result is :
Cap = (240 x 4) / (0,3 x 12) = 267 Ah
As baterias são usadas para armazenar a energia elétrica gerada pelos painéis. Você precisa de uma bateria de planta 267 Ah em 12 V.
Ver e compreender o procedimento, o cálculo
Uma hipótese de cabeamento seria tendo o 2GEL 12V 150Ah (165Ah en C20)tipo de bateria, que aumentam a capacidade da planta até 300Ah
The charge controller stands between batteries and panels, its role is to handle batteries charge depending on what the panels can provide.
A wiring hypothesis would be to have a MPTT 250/65 type charge controller(?) on which would be connected 2 serialized panels
A type MPTT 250/65 charge controller, with a 12V battery plant, allows :
Note: serialization multiplies voltage (V) and paralleling multiplies the intensity (I)
All these characteristics are available in the product's technical sheet. You can customize your charge controller characteristics in Export mode.
A wiring diagram was established according to panel/charge controller/battery hypothesis :
The converter goal is to transform batteries DC current (here 12V) in AC current usable for standard devices. You need a converter able to deliver the 10W max electric power you need.
An hypothesis would be to choose a 12/180 type converter that goes up to 175W max power with possible peaks at 350W.
It is recommended to have a bettery controleur in order to check battery plant charge state.
Wire section choice ( calculate) is important in order to avoid electricity lossess :
The formula to calculate the wire section in order to avoid loss is :
S = Rho x L x I / VL
In our case it gives :
S = 0.019 x (8x2) x 7 / 0,86 = 2,47mm²
The formula to calculate the wire section in order to avoid loss is :
S = Rho x L x I / VL
In our case it gives :
S = 0.019 x (1x2) x (480 / 12) / 0,12 = 19mm²
Another and more complete wire section calculator is avalaible at sigma-tec.
_('This is an approximate estimation for new equipment, it can\'t be considered as a quote.') ?>
Which brings to a total budget between 1897 and 2502€. Cost of panels support, wire, wire terminal and protection elements (fuse, battery cut-off, ...) is not included.
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