Your Questions About Solar Panel Installation

Carol asks…

What are some pros and cons of owning a business that installs solar panels?

im doing a business plan at school for solar panel installations. Best answer 10 points….CMON PEOPLE there has to be someone that knows

ssadmin answers:

Its an illuminating experience
You bring light into peoples lives

Daniel asks…

Is the installation of solar panels in a cemetery really necessary?

Dessecration or needed?
Views tvm

ssadmin answers:

I'm not sure that the inmates will have a problem with it.

Their nearest and dearest might, until they realise that these things can power up CCTV coverage in remote spots where some maggot brained scrotum thinks kicking a grave stone over is good fun.

An awe-full lot of my early ”social” intercourse was carried out in grave yards, and I'm sure it still goes on. So perhaps there could be embarrassment there.

Lets go for it until we don't.

Charles asks…

How does the solar panel PV system works in the Canadian winter during the snows. Will snow melt off by itself

How does the solar panel PV system works in the Canadian winter during the snows. Will snow melt off by itself from the solar panels or certain angles I have to look into during installation. Do I have to bush off snow if I install it on the roof in the winter time.

ssadmin answers:

Heavy snows will not melt off by itself in midwinter. The truth is solar panels don't do much during the winter due to cloudiness all the time. They are most useful spring and fall.

Mary asks…

Please help with my solar energy installation?

I have a few volkswagen solar panels, those that they use to keep the batteries charged.
I´m planing to use them in combination with a car battery and a small power inverter with a timer to pump water only a couple of minutes a day to water my bonsais,
I have the panels, the battery, the timer, the power inverter and the pump,
What else do I need to make it work?
A friend told me that I have to prevent the energy from going back or something to shut off the timer when the batteries are charging. Thanks!

ssadmin answers:

That's a tricky question.

You are going to need one or more diodes connected between the PV panels and the battery, to prevent it from discharging through the panels when the lights are out.

A single car battery typically has a charging current of about 0.8-1 amp, and needs a charging bias of about 2.3-2.5 volts over the top of the battery's voltage. I assume that since the originally intended purpose of your PV panels is for charging car batteries, that they are sized correctly in terms of voltage and current output.

The diode(s) is another matter. Here are the specifications you are going to want. I have added here an approximate fudge factor.
Forward voltage : ~0.8v
reverse breakdown voltage: 30v
leakage current: micro-amp range
forward current: 2 amps. If you can't find diodes this large(unlikely), you can just connect enough in parallel to get the current capacity you want.

Another problem, is the fact that the inverter will draw a small to moderate amount of current whenever it is switched on, even if the pump is not on. I am not sure how to solve this problem besides just physically turning the inverter off when it is not being used. This kind of defeats the purpose of having an automatic system though….

Mark's idea of using a 12v dc pump and ignoring the battery and inverter altogether, is a good one.

You might want to talk to a bona fide electrical engineer in RL, and ask him what his opinion is. Electrical engineering is not my specialty……

Good luck with your project
~Donkey Hotei.

Steven asks…

in hybrid system of installation of solar panels how do the panels and mains regulates the charging of the bat?

bat means battery and also mains means sources of input to the inverter

ssadmin answers:

Via electronics. Sensors in the charger (if it's a good one) measure the battery voltage and use that, plus temperature, to determine the amount of charge in the battery, and to calculate the optimum charging rate, and apply that current. The charger updates these measurements periodically. When the battery is fully charged, the current is reduced to an amount just enough to keep it charged.


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