Multi-crystalline
(Poly crystalline) Solar Panels
A poly crystalline cell contains many crystals. It has similar life span to the mono crystalline cell type, but it has lower efficiency and cost per watt.
Mono-crystalline
Solar Panels
A mono crystalline cell is made of a single crystal. Mono crystalline solar panels
are high efficiency solar panels.
All Black
These are
very large in sizes but less in output watts. All black solar panels are used
in very hot areas because it high resistance against in temperature. These are
cheap in rates as compare to Ploy and Mono Crystal.
How Much
Watt Solar Panel We Need?
Example we want to power up 5 lights of 20 Watt and we
need to use these 5 lights for 3 hours every day. Here first we get a total
watt usage. P total = 20 * 5 = 100W. Than we multiply 100 with 3 hours. P daily
= 100 * 3 = 300W. We are going to use 300 watt daily. Let us say we are going
to have complete sunshine 6 hours each day. Now we divide 300W with 6 hours, so
we will get hourly power charge that we need P hourly = 300 / 6 = 50W. So we
need a 50 watt solar panel. But it is recommended to always choose a panel some
bigger then we need. Because when solar panel charge the battery so it is
wasting some power on charging too.
Quality of Solar Panels
We recommend to buy solar panels of good quality. If you is
really looking for panels that can be used in 20-25 years without have massive
loss so we recommend you to buy quality solar panels. Because normal quality
solar panels have a about 1% or less yearly loss of energy each year. So it
mean if you use them 20 years so they will have a loss percent of 20%. So a 100
Watt panel will produce 20% less then what it produced when it was new. 100
watt minus 20 it is equal 80 watt. After a 20 years usage in direct sunshine a
solar panel will produce 80 watt.
If a panel just begin
to produce less power just after 1-2 years usage so it is not a good quality.
You have just loss your money on bad panels.
Charge controllers
Charge controller is used to charge batteries from Solar Panels.
Solar panels normal give 15-17 volt, charge controller converts that to 12-14
volt and charges battery. Battery often need a higher voltage than it already
have to charge the battery. Charge controller prevents batteries to be over
charged. And stops to charge when battery is fully charged. And it will give
longer life for battery. You can also use blocking diode instead of charge
controller. But there are some negative effects of blocking diodes. If you do
not use charge controller and just use a blocking diode, so battery can be over
charged and damaged. If you is using big solar panel system so it is better to
have an advanced charge controller. That gives you complete statistics of how
much volt and ampere it have charged battery. Advanced charge controllers also
show you how much ampere is on batteries. Charge controllers can automatic
disconnect battery if it is going to be empty.
For bigger systems like tube-well or water pumping they are used
high voltage charge controllers, called MPPT (Maximum Power Point Tracker)
charge controllers. MPPT charge controller can convert dc-dc voltage. Example
used in 24, 38, 48 volt systems. MPPT charge controllers are used with higher
power panels like 135 watt and higher panels.
Solar Battery Storage
Normal
Batteries
Batteries are very important resource in solar power system to
store all the power. It is used normal car batteries. Normal batteries are
cheap and good. Normal car batteries require some maintenance. The thing is you
need to do is fill mineral free water or distilled water (Urdu. Taizab) after a
period. You have to check the battery after each 6 months or earlier for level
of distilled water. Cable connection needs to be clean and tightened. Many
battery problems are caused by dirty and loose connections.
Maintenance
Free Batteries
Maintenance free batteries do not require any kind of filling of
acids. These batteries have a liftime of 1000 charges or some years. So you
have to change battery after this time.
How much
watt a battery can store?
It depends on battery size and how much Ah (Ampere hour) is a
battery. Example if a battery is 65Ah so it can store 780W. We know a battery
is 12v and we have 65Ah. P = E * I = 12v * 65 = 780W.
How to
increase battery capacity?
By connecting to batteries in parallel it will increase
capacity. We are showing you how to connect batteries in parallel on the
picture under. You have to connect positive wire from 1st battery over to
second battery and connect negative wire over to negative wire on second
battery.
Parallel Connection
Series Connection
Solar Lights
This is
information you need to know when using solar powered lighting system.When
selecting lights we recommend you to select DC 12 volt lights. As high watt
gives high light. And select energy saving lights. Because energy saving lights
give you more light and uses less energy. As a sample a 11W energy saving bulb
gives light like 60W.
How to
connect lights?
Connect always DC lights in Parallel connection. We are not
going deep in why to connect in parallel. A reason is voltage fall. See the
picture under for wire connections. Do not connect wires in opposite directions
if it is written on instructions for bulbs.
How much
power do they use?
When 3 dc lights connected of 11 watt so Ptotal = P1 + P2 + P3.
This mean total power = light1 + light2 + light3. Ptotal = 11 + 11 + 11 = 33W
Grid Tie Solar System
Solar Grid Tie Systems, or Grid Connected Systems, are connected to
utility grids and feed power back into the grid. These systems consist of PV
panels that are connected to the grid via a tie inverter. The power produced by
the PV system can either supply electrical loads to local areas or be fed back
into the grid when the PV system's output is greater than the load demand. When
the PV system's output is less than the load demand (e.g. at night), energy is
consumed by the local client from the utility grid. Solar grid tie system vary
in size from residential to solar power stations.
This system is for energy saving only, reduces
electricity bill, NOT FOR BACK-UP.
Panel Stand, DC Wire, Connectors etc not included in estimated price
Installation/Transportation Charges not included
Panel Stand, DC Wire, Connectors etc not included in estimated price
Installation/Transportation Charges not included
Hybrid Solar System
Our hybrid systems work on both solar and grid electricity. During
daytime, the loads are operated by solar energy. During nighttime, they are
operated using the energy stored in solar batteries or on grid electricity.
Batteries are charged by solar energy or grid energy or both. Our systems are
modular and easily expandable. They also provide full UPS functionality. System
Configuration, annual solar production, connected load, battery backup
duration, and component details for our standard hybrid systems are shown on
this page. Systems can be customized for higher levels of solar production and
longer battery backup. System and component information may change at any time
without notice.
Estimated price with Flooded
Battery
Panel Stand, DC Wire, Connectors etc not included in estimated price
Installation/Transportation Charges not included.
Panel Stand, DC Wire, Connectors etc not included in estimated price
Installation/Transportation Charges not included.
Stand Alone Solar System
Standalone Solar Power Systems are completely independent from any
electric utility grid. They are most often used in remote areas where
electricity is not available or where the connection fees of the grid are
higher than the cost of an alternative energy system. Standalone solar systems
(also known as autonomous, or off grid systems) are used to collect and store
solar energy to be used by household appliances. These systems typically
generate from 100 Watts (very small systems) to 5 kilowatts (larger systems,
multi family homes). During the day, the electricity generated is used to power
the home and charge the batteries. At night, and during rainy days, all
necessary power is provided by the batteries
Feel Free to Contact
Moeen Wattoo
0333-540-1122
0345-589-1122
mawattoo1122@gmail.com
mawattoo1122@gmail.com