Hello, I'm Amy from the altE Store.
My Spanish is very bad,
so I want to present Blanca.
Hi all! As Amy mentioned,
my name is Blanca and I belong to this lovely AltE Store family.
We are often asked how much solar energy we need to turn on our electronic equipment.
So we decided to make this video to help you understand it.
First of all we must understand the difference between a Watt and a Watt-hour.
While Watts and Watts-hours are related terms, they are not the same thing.
So, what is a Watt?
A Watt (W) is a unit of power and the power is the rate at which the energy is produced or consumed.
Now, what is a Watt-hour?
A Watt-hour (Wh) is a unit of energy. It is a way to measure the amount of work generated or performed.
We can understand it better in the following example:
A car driving at a speed of 100km / h in 2 hours, would travel 200km away.
A device that consumes 100Watts in 2 hours, would use 200Watts-hours of energy.
Next I show you a picture with the main devices that we would use in a photovoltaic system in our home.
Take note of the equipment you would use at home and add the Watt-hours of each device present in the previous table
This way you will get the total of Watt hours needed for your solar energy system.
It is important to note that everything that produces heat or cold needs a lot of energy.
For example: If we want to light the following electronic devices:
6 Led lights 1 Fan 2 Cell Phones 1 laptop 1 Internet Router 1 Refrigerator
(Remember, the refrigerator is not consuming power 24 hours a day even if it is plugged in)
Then returning to the previous table, if we add each of the total of Whoras per device,
we obtain 2,226 Watts hours which would represent the energy that you need to produce.
It is important to mention that the energy you need will depend on where you live or where you are on the globe.
Find your location on the following map
and see what the average solar energy generated is based on your location.
For example, if we have a 100 Watts solar panel and use it in my home country, Venezuela,
we can make approximately 350Wh of solar energy per day.
Because we previously determined that we would need 2,226Whours of energy,
in that case if we divide this between 350Wh,
we would need 6.36 100W solar panels, or a solar array of at least 636 Watts of power.
Then, we can use 2 solar panels of 320Watts each.
Now that we know how much solar energy we need to turn on our devices for a day,
we ask ourselves the question: how can we store this energy when we do not have a bright sun?
This would require the use of deep cycle batteries.
It is important to note that we use batteries in off-grid photovoltaic systems
(to systems disconnected from the conventional electricity grid),
also in hybrid systems (or systems connected to the electrical network with backup batteries).
For every 100W of solar energy, we would need 1500 Watt hours of storage in the batteries.
This means that our system requires at least: 1,500Wh x 7 100W panels = 10,500 Wh
Therefore, if we use a 24Volt system, that would need a 438 Wh battery bank.
Let's see this battery for an example:
Using 4 batteries of this model we can obtain the Watt hours needed from the system.
If we connect these 4 batteries in 2 parallel strings of 2 batteries in series,
this would give us a battery bank configuration of 24V and 460Ah.
Please always remember that most photovoltaic systems require charge controllers, inverters, breakers,
and other components that are responsible for protecting and stabilizing the system.
We'll talk about them in our next videos.
Visit our videos in English and take into account that we will be doing other videos in Spanish.
Thanks for watching the videos on our website. Do not forget to check our website altestore.com
If you liked this video, give me a Like and subscribe to our channel.
See you later!
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