Q
How does solar equipment
work?
A
Solar panels turn daylight and sunlight into electricity.
The cells absorb the light and produce electric voltage, solar
cells do not store any electricity so all power produced is
fed through a regulator to the battery and stored there.
Q
Do solar panels require
maintenance?
A
The only maintenance is cleaning with a damp cloth from time
to time.
Q How
long do solar panels last?
A
Life expectancy is greater than 25 years depending on type.
All parts are designed for outside use.
Q Is
there something to stop electricity flowing back into the
solar panel at night?
A
Some solar panels have bypass diodes integrated into the panel
to stop this but it is always worth checking on any proposed
purchase.
Q What
angle should my solar panel be positioned at?
A
Try using a volt meter on the panel on a fairly bright day
to see what is best for your location, but generally for the
UK an angle of 35 - 45 degrees would be suitable.
Q Do
solar panels still produce power on cloudy days?
A
Solar panels continue to produce power but on a reduced basis.
Q Is
the electricity produced by a solar panel different from other
sources?
A
The current produced is the same
How to measure the size
of solar panels needed
- EXAMPLE
| Appliance |
Specified Power |
Running Time Per
Day |
Consumption Per
Day |
| Radio |
15 watts |
4.00 |
60
Watt hours P/day |
| Light |
40 watts |
5.00 |
200
Watt hours P/day |
| TV (colour) |
40 watts |
3.00 |
120
Watt hours P/day |
| Satellite Receiver |
40 watts |
3.00 |
120
Watt hours P/day |
| |
|
|
|
| Total Watt Hours
Per day |
|
|
500 Watt Hours
Per day |
According to the above example 500 watt hours per day usage
would need solar panels equivalent to approximately 125 watts
output (much bigger if mid-winter) for 5 hours exposure to
produce enough power to cover the power consumption required.
See other pages with solar systems examples Getting
Started
Global
Warming - it's why we are making changes to our way of life!
David Bellamy has a very interesting article on global warming
where he gives another point of view,
Read
the article