required a design

[jay]

Dear all,

I need to get 26 Amps /hr daily with out depending on convention energy like electricity or DG . what should be my battery bank size and PV panel size and volt, to get the out put
we are expecting we can get the avearge sunlight 6 hrs

whether we can use LED lamps in cloud and night conditions to get a better productivity of solar panel

Thanking you,
Jay

[russ]

Hi Jay - Welcome to Solar Panel Talk!

What is your approximate location - then I can use PV Watts for the historical insolation value.

Russ

[jay]

Thanks for the reply, my location in india (north part of india)

Hi Jay - Welcome to Solar Panel Talk!

What is your approximate location - then I can use PV Watts for the historical insolation value.

Russ

[Mike90250]

....electricity or DG . .....

What is DG ???

Design Guide
Dog Generated waste
Data General

[russ]

From PV Watts

For a 1000 watt DC installation using New Dehli location
Month Solar Radiation(kWh/m2/day) ACEnergy(kWh)
1 5.56 124
2 5.90 116
3 6.65 141
4 7.01 140
5 6.91 138
6 6.34 123
7 5.28 107
8 5.25 108
9 5.89 117
10 6.17 128
11 5.74 117
12 5.56 121
Year 6.02 1479

What this does not say is how many days you do not have sun - especially how many consecutive days. Important for sizing the battery bank. During the monsoon period you have cloudy periods - right? Do they last for days such as in Gujarat?

You are far enough south you may get the 6 hours per day - right now I get about 4.

You mentioned 26 amps per hour but no voltage.

Someone else can better help you with comments on a system than I but they should have enough information now (I hope).

Russ

[russ]

Hi Mike - He will mean diesel generator. If I didn't request adequate information would you please add what is necessary.
Thanks,
Russ

What is DG ???

Design Guide
Dog Generated waste
Data General

[Sunking]

I need to get 26 Amps /hr daily

Huh? This is meaningless without a voltage.

[jay]

required your attention

Hi Mike - He will mean diesel generator. If I didn't request adequate information would you please add what is necessary.
Thanks,
Russ

Dear Russ,

Thanking you for the support

I can provide you more information ,
we need 22 to 26 Amps, total volt comes 48 v , my vision is to minimize Electricity usage and diesel generator
if I am going with 600 Ah battery, 35v PV panel , with expectation of sunlight 4hrs
how much I am expect to get power backup in solar .



whether my idea to put LED lamps around the PV panel connecting with light sensor so that power generation may possible in cloudy and in night , LED lamps will take 2 to 4 w . so Please guide me
you,
Jay

Thanking

[Sunking]

I can provide you more information ,
we need 22 to 26 Amps, total volt comes 48 v ,

For how many hours per day?

48 volts at 22 to 26 amps is 1056 to 1248 watts. So how many hours per day will you use. We need the watt hours which = watts x hours. So for example if you supply 1256 watts for 5 hours each day = 1256 watts x 5 hours = 6280 watt hours.

[jay]

For how many hours per day?

48 volts at 22 to 26 amps is 1056 to 1248 watts. So how many hours per day will you use. We need the watt hours which = watts x hours. So for example if you supply 1256 watts for 5 hours each day = 1256 watts x 5 hours = 6280 watt hours.

Dear sunking,


Thanks for the support,

That last one which i inquired whether we can get a mileage in putting LED lamps.

[Mike90250]

I put blue LED's under my truck, but I still only get 13MPG city.

i inquired whether we can get a mileage in putting LED lamps.

[russ]

You blew it Mike! They should have been red LEDs!

Blue is said to reduce mileage! Don' remember who said that - may have been the barber.

For Jay - any lamp that uses less watts and still supplies the lumens required are a positive thing.

Russ

[jay]

You blew it Mike! They should have been red LEDs!



Blue is said to reduce mileage! Don' remember who said that - may have been the barber.

For Jay - any lamp that uses less watts and still supplies the lumens required are a positive thing.

Russ

Dear Russ/mike,


Thanks for the valid updations just I am planning to try the LED lamps Just for a sake of experiment


Thanking you,
Jay

[Mike90250]

whether my idea to put LED lamps around the PV panel connecting with light sensor so that power generation may possible in cloudy and in night

Sorry, PV panels need bright, strong daylight to work, LED lights will not be bright enough. You are thinking of perpetual motion, which with all the losses in solar, will not work.

[russ]

Providing artificial light to a solar panel for power production will only add inefficiency to inefficiency. Efficiency is not solar PV's strong point to begin with.

I was thinking you intended to use LED's to reduce power consumption.

Adding artificial light to a panel will not do anything positive - except that you could see the panel surface at night.

Russ