Dear Professionals...i am making a feasibility study on using solar panels for our office. It is a small size office which only has 7800 KW power consumption annually....can anyone help in the design?

Dear nebcin varghese

Easy questions - no have easy answers.
I'll need more information.

1. Where is your office? The most well-coordinates.
2. What you want to do - to use only solar power - off grid or to help the grid?
3. These 7,800 kwh - are distributed equally throughout the year?
4. If the system is off-grid - what voltage your appliances work? Can operate on 12 or 24 volts?

If you want my e-meil is yhoro22@gmail.tsum
Have a nice evening

dear sir,

1. our office is in dubai, united arab emirates. Coordinates approximately would be 25.2697° N, 55.3095° E
2. we need to use an off grid solar system. as i told you...this is only a feasibility study as a part of a project
3. 650 KW/month is the peak summer load. as u know summers are harsh here and normally all appliances (be it cooling or electrical) are designed on 52 C (125F). This isncludes all appliances including chillers, machines i the factory etc.
4.The power supply in UAE is either single phase (230V/1Ph/50Hz) or 3 phase (380-415V/1Ph/50Hz). So some appliances work on single phase and some on 3 phase depending on thier electrical load. for example, chillers work on 3 phase and lighting on single

I hope these answers are inline with your queries

Pl. state your usuage in kwh per day so as to design solar system. Pl. confirm you want to go for off grid or on grid. In case of Off grid, what is the storage period required so as to design battery . Pl. convey at jdilip52@yahoo.com

Dear Nebcin Varghese

These data are sufficient for preliminary design - conceptual Project.
Just think:
7800/12 = 650 kW
it's average consumption per month. Can you say summer - how Max month.

Georgi Shtebunaev

the peak load remains for around 6 months..the load in another 3 will not vary much even though it is not summer......by the way...i am into HVAc and solar is pretty new for me....i appreciate if you could help me with the formulas or any articles available online on how to design

If solar is new to you, I would not tackle an off-grid design. Besides allowing for the steady demands over time, and allowing for the seasonal and usage peaks, there are surge demands to be met and questions about days of autonomy, amount of maintenance you can provide and so on. If you contact me privately, I can help you work on this one.

I am also new to PV systems and want to get up to speed as fast an possible. These discussions help a lot. Is there anywhere I should look for technical info.

NABCEP classes are the best, community college, depending on the level of depth you're looking for. If you just need the basics, Solar for Dummies is surprisingly good, if you can ignore the title. That can be found with a Google search and downloaded as a .pdf.

Again, if you're wanting to design and build off-grid solar, just bite the bullet and get a pro to do it. I was in TX and didn't find that many people who could do it right. We could.

Travis,

We have a pro but I want to learn as much as possible as fast as possible. We're in this thing for the long haul.