The Expandable Solar Power System (Plug and Play)

[inetdog]

Closed by Moderators. This thread was not going anywhere.

[Sunking]

I realized that I made some critical mistakes and that I needed 8 Batteries instead of 6. Thank you for your assistance.
Have a look at it now,
PS
Just to be sure, am I to assume the following is correct?

183 A / 20 hours = A discharge rate of 9.15 Ah | 109.8 Wh

Hell no that is not right. How many times must you be told not to use AH?

[Maitland Gill]

inetdog meant 9.15A

I know that's what he meant because he's being clear with his units.
And therefore it is easy for me to see the mathematical mistake/typo he made.

I realized that I made some critical mistakes and that I needed 8 Batteries instead of 6. Thank you for your assistance.
Have a look at it now,

PS
Just to be sure, am I to assume the following is correct?

183 A / 20 hours = A discharge rate of 9.15 Ah | 109.8 Wh

5% of 183 A / 9.15 Ah = 1 hour

10% of 183 A / 9.15 Ah = 2 hours

20% of 183 A / 9.15 Ah = 4 hours

40% of 183 A / 9.15 Ah = 8 hours

Is this not how we determine the number of Watt-hours that a certain percent of a Battery (Given it's rate of discharge) has in it's capacity?

Or is the 9.15 Ah subject to change?

[inetdog]

inetdog meant 9.15A

I know that's what he meant because he's being clear with his units.
And therefore it is easy for me to see the mathematical mistake/typo he made.

Fixed it, thanks.

[foo1bar]

You are being careless again. Ah/h = A not Ah.

If you have a battery which can deliver 183 amp-hours over a 20 hour period and you discharge it so that it will be totally drained at the end of 20 hours you will end up pulling 20A the whole time. .

inetdog meant 9.15A

I know that's what he meant because he's being clear with his units.
And therefore it is easy for me to see the mathematical mistake/typo he made.

[inetdog]

Are you saying that the notion of (183 Ah / 20 hours = 9.15 Ah) is wrong?
But then how else do we determine the number of Ah that a battery can give out at a desired percentage?

You are being careless again. Ah/h = A not Ah.

If you have a battery which can deliver 183 amp-hours over a 20 hour period and you discharge it so that it will be totally drained at the end of 20 hours you will end up pulling 9.15A the whole time. But that would kill the battery, so do not do that!


And as far as not answering your questions is concerned:
If your question is phrased in a way that does not make sense, the first step is to try to figure out what your real question is. Only then will it be possible to answer the question. And if you have not got your terminology straight you will not understand those answers!

Communication requires some common ground first as a reference.

[Sunking]

I think Power is a term that refers to wattage, while Energy is a much broader term that describes the measurements such as Ampere (Or, Coulomb), Volts (E-field), Watts, Newtons, Ohms, Joules, and how they relate to a given length and time.

http://theinvertedtower.deviantart.c...itle-458965257

Wrong. You are speaking Jibber Jabber and no clue what either means. That is why everything you have done so far is complete nonsense.

When working with Electricity:

• Power is the rate in which electrical energy is transferred into a circuit and measured in Watts or one joule per second. In other terms the rate at which work is being done. A 100 watt light bulb uses 100 joules per second.
• Energy is the amount of work done over a specific period of time. Electric energy is measured in Watt Hours = Watts x Hours. A 100 watt light bulb turned on for 10 hours uses 100 watts x 10 hours = 1000 watt hours or 1 Kwh. Simple 5th grade math.

So now answer this. How many watts and watt hours is in a 100 AH battery?

Answer: There is no answer, it is jibber jabber, meaningless nonsense. Now if you knew it was a 10 volt 100 AH battery you can answer the Watt Hours part of the question, but not watts. A 10 volt 100 AH battery has a energy capacity of 10 volts x 100 AH = 1000 wh or 1Kwh. Watts is unknown because you have to define the time period the enery was consumed. Watts can be can be any number greater than ZERO.

From this point I can no longer help you as you do not even understand the basics. You need to stop what you are doing and hire someone to do the work. You are not capable and if you continue will learn a very hard nasty expensive lesson and wished you would have listened. So you can listen, or do it the hard way by loosing thousands of dollars. No better teacher than failure and loosing a lot of money.

[Sunking]

I already know that, I explained it in the article (Some words have a faint line beneath them, showing that you can hover your cursor over them for a pop-up).

I seriously doubt that, because if you knew it, then you would know not to use Amp Hours.

[Sunking]

But if there's so many flaws in my article, why can't people answer my questions?

We have, you just do not understand.

[sensij]

The bill at my parents house in Victoria showed the rate, and I know my inlaws in Brisbane pay about the same. Plues just google it.

Like I googled Power V Energy and found this,

http://www.energylens.com/articles/kw-and-kwh

Which may be?? what sensji is getting at?

That is a nice write-up. It could be extended by breaking electrical energy and power up into their constituent parts:

Power (W) = potential * current = Volts (V) * Amps (A)
Energy (Wh) = integral of power over time = [(average potential * average current) * time] = [(Volts (V) * Amps (A)) * Hours (hr)]

Ah just combines the Amps * Hours portion of the energy equation into a single number, but without voltage (or unless you assume fixed voltage), comparing Ah numbers doesn't get you too far. It works for comparing batteries (when the voltage is fixed), but for system design when voltage is not the same in different circuits, it is better to stay in units of energy (Wh) as much as possible. For example, when using MPPT, solar array voltage is not equal to battery voltage, neither of which equals inverter output voltage. Comparing Ah directly across those different circuits is not meaningful.

[Bala]

The strange thing about it, is that our Electricity bills don't show the number of Kw/h. Instead, it's shown as a number of 'Units'.
I had to figure out how many Watt-hours each Unit represents, but I must of screwed up somewhere. How did you know?

I think you will find 1 unit is 1kwh,

but there are different tarrifs, so you get charged a different rate depending on when you use the power.

You should be able to google a guide to understanding your bill for your provider.

[Bala]

The strange thing about it, is that our Electricity bills don't show the number of Kw/h. Instead, it's shown as a number of 'Units'.
I had to figure out how many Watt-hours each Unit represents, but I must of screwed up somewhere. How did you know?

The bill at my parents house in Victoria showed the rate, and I know my inlaws in Brisbane pay about the same. Plues just google it.

Like I googled Power V Energy and found this,

http://www.energylens.com/articles/kw-and-kwh

Which may be?? what sensji is getting at?

[Maitland Gill]

How did you work out a grid supplied price of $5.87 per KWH,
'
An average price for Australia seems to be about 25c kwh

and as you are still connected to the grid then the supply charge makes no difference.

The strange thing about it, is that our Electricity bills don't show the number of Kw/h. Instead, it's shown as a number of 'Units'.
I had to figure out how many Watt-hours each Unit represents, but I must of screwed up somewhere. How did you know?

[Maitland Gill]

In your own words, what is the difference between power and energy?

I think Power is a term that refers to wattage, while Energy is a much broader term that describes the measurements such as Ampere (Or, Coulomb), Volts (E-field), Watts, Newtons, Ohms, Joules, and how they relate to a given length and time.

[Bala]

How long until the system pays for itself?
If 1 kW per hour costs $5.87 and the 16 Solar panels produce 2.08 kW per day, then $12.20 is removed from the electric bill each day.
($5.87 x 2.08 = $12.20)

How did you work out a grid supplied price of $5.87 per KWH,
'
An average price for Australia seems to be about 25c kwh

and as you are still connected to the grid then the supply charge makes no difference.