Solar Tracker - Sun Tracker

Solar Tracker - Sun Tracker

Solar Tracker

Solar or Sun tracker is used to change direction of solar panel. Solar tracker automatically changes direction of panels to where sunshines is highest. Solar tracker is recommended for higher installations. Because without solar tracker solar panels just stands on one direction and sun light changes directions and does not shine 100% on panels. Solar trackers are expensive due to assembly and mountings included with it.

Solar Panels

Solar Panels

Multicrystalline panel                     Monocrystalline panel

Multi-crystalline (Polycrystalline) Solar Panels

A polycrystalline cell contains many crystals. It has similar life span to the monocrystalline cell type, but it has lower efficiency and cost per watt.

Mono-crystalline Solar Panels

A monocrystalline cell is made of a single crystal. Monocrystalline solar panels are high efficiency solar panels.

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. Ptotal = 20 * 5 = 100W. Than we multiply 100 with 3 hours. Pdaily = 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 Phourly = 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.

Calculate how much watt solar panel do you need. Here in sample we need 50W.

Quality of solar panels

We recommend to buy solar panels of good qualtiy. 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

Solar Energy, Power, Electricity

Basic about Solar Energy, Solar Power and Solar Electricity.

In basic about solar energy, solar power and solar eletricity we will talk about the basic things behind this power. Formulas that will be used to find out which Solar Panel you should use and which battery you should select. And how much Solar Panels do you need to power up lights and other applications. Here are the main things you need to know and that will be used to calculate your needs. AC-DC system, Volt, Current(Ampere), Power(Watt), Resistance, Series and Parallel connecting.



AC-DC system

Ac stands for Alternative Current. Alternative current is almost that we found in wall outlet or electric outlet. Clever say'd that we found in wall. It is 230 Volt. DC stands for Direct Current. In solar panels it is used 12 volt dc system. DC is that current we can found in cells, batteries, and using adapters or regulators. See the picture of a dell charger. Dell charger also converts AC Current to DC 5.4 Volt and 2410mA. Solar Panels also uses DC voltage and Current.

Volt

Voltage is the electromotive force (pressure) applied to an electrical circuit measured in volts (E).

Example. P=200W, I=4.0A. If we have a value of watt and ampere and we want to find out how much volt does it use then we should use this from Power Circle. E=P/I. 200/4.0=50V. So we found voltage is 50V.

Current

Current is the flow of electrons in an electrical circuit measured in amperes (I).

Example. P=100W, E=12V. We want to find out how much ampere does it use. We take a look at circle. I=P/E. 100/12=8.33A. Current usage is 8.33A.

Power

Power is the product of the voltage times the current in an electrical circuit measured in watts (P).

Example. E=220V, I=0,4A. This example is taken from picture of Dell Charger. We have 400mA=0,4A. Take a look at circle P=E*I. 220V * 0,4A=88W. Answer is dell charger use 88Watt.

Resistance

Resistance is the opposition to the flow of electrons in an electrical circuit measured in ohms (R). Increased resistance gives higher voltage and higher power(watt).

Example. E=12V, I=3.0A. We want to find out resistance. We use formula R=E/I. 12V/3.0A = 4 Ohm.

Parallel Connecting - 12V System

Parallel Connecting solar panels gives higher current. And voltage will remain the same. Parallel Connecting is best for us. Because we do not need high voltage. Normal battery is 12v. And by selecting high voltage require higher voltage charge controller. To connect solar panels in parallel we have to connect plus + to plus and minus - to minus. See the picture for details.

Series Connecting - 24V System

By connecting Solar Panels in series connection. It will increase Voltage and current Amps. will remain the same. To connect solar panels in series we have to connect plus + to - minus on next panel. See the picture for details. In this example we have connected 2 solar panels in series which will give 24v output.

Series and Parallel Connecting - 24v System

If we are creating a 24v system. So then we have to connect two solar panels in series and connect two series connected panels in parallel as showed in figure under. Which increases voltage to 24v and when we have connected two other 24v connected solar panels in parallel so voltage remains same and increases current Amps. If we want to increase output current on 24v so we connect more solar panels in parallel same way under as shown in figure under.

How to connect solar system?

Yes we will tell you about how to connect solar power system together to get it to work. First what you have to do is take a closer look at charge controller.

Charge Controller

We can easily see on charge controller that it have been marked with solar panel, battery and lights. Now the thing is to connect correct wires of solar panel, battery and lights to plus to plus and negative to negative.

Solar Energy System

We are selling solar panels, charge controllers, batteries, inverters, dc energy saving lights and other equipment for solar energy. If you want to install this system at your home in Pakistan so please contact us by email or call us. We will help you with installation of solar energy system in Pakistan.

Solar System Pakistan

Solar System Pakistan

In solar system the things you need is depend on what you want to do. If you want to turn on just lights, bulbs or lamps. So then what you need is listed under here.

1. Solar Panel

2. Solar Charge Controller

3. Battery

4. DC Lights

These are things that you must have to turn your lights on. Without them it is difficult to power up lights. Solar system works in this order. Solar Panel is giving current to charge controller. Charge controller charges a battery. And lights are powered up by a battery. In this case it is DC lights.