Solar Panel Mounting

<...1-what is correct angel of Mounting solar Panel ?...>

It depends upon latitude, and is a compromise between summer sun angle and winter sun angle. The bias should be more towards the winter sun angle, when the need to capture is greater and the available infrared is less. It also needs to take into account any shading from nearby buildings, trees, etc.

<...2-what is maximum distance between Battery and Solar panel ?...>

There is no theoretical limit.

<...3-what is thickness of wire to be used between panel and battery ?...>

It depends upon the tolerable voltage drop. Generally, the thicker the wire the lower the drop, though somewhere there will be a pay-off between local cost and diameter, a judgement that only the end user can make.

1. Answer for # 1 is good and on money

2. Answer for #2 is minimum one can get by better efficiency he or she will achieve. There is I2R loss and wire length is rlated to the resisitvity and and power loss which was generated by solar cells

3. Number #3 Fully agree it is the wire quality and what is mentioned

It also depends on the resistivity of silver and quality backside aluminum used and its resistivity since these line are the extension of wire on which electron charge travells

MAsyood

Masyood@gmail.com

Masyood

Masyood@gmail.com

Your angel of mount is your latitude for fall and spring equinox. +15 degrees for winter solstice and -15 degrees for summer solstice.

Keep the distance as short as you can as it will save you cost in wire.

Wire size is dependent on voltage and amperage of the PV array.

For 12 volt with less than 3% voltage drop:

#2AWG at 60 feet.

#6AWG at 30 feet.

Same setup with a 24 volt series and appropriate charge controller:

#8Awg at 60 feet.

#10AWG at 30 feet.

If it is critical use a tracking mechanism otherwise set it for the best winter angle.

Trisonic,

I can give you data about the angles for the south hemisphere (Buenos Aires city, latitude 34,5°)

Summer: 22°

Winter: 46°

Spring and autumn: 34°

Regards,

Ernesto

Some very good answers so far. However the efficiency at Latitude -15 degrees does not warrant the cost of tracking. Focus on what's important: Tilt: Latitude - 15 degrees Azimuth: Due South if possible Mounting: Air circulation below panel (heat lessens efficiency) Calculating max voltage of array: based on low annual temperature NO shade on the array from 8am to 8pm No Shade None at all if possible Mechanical strength of Mounting: Must be wind proof DC wire sizes given in a previous post look good Good luck

An interesting thought I came across is the possibility of using a Tube array, so that you don't have to worry about the tilt angle at all. The tubes will always have a portion perpendicular to the suns rays. Plus, with the addition of a reflector behind the tubes, you can improve the efficiency. Just a thought. A demonstration of this can be found here: http://www.fossilfreedom.com/increase-output.html

As far as the angle is concerned, I used to have a book on Solar design that listed the proper tilt angle by latitude for each month of the year, but I have been unable to find it online or at home so far, but I will try further. I know that information is out there.

Good Luck!

Regarding question number one, I have found some more information regarding solar inputs over different months. Now this data is only for Munich, Germany & Lyon, France, but it does touch on inverter efficiencies, angles, etc. for those given latitudes.

Hope it helps!