Renewable Energy

Working of a wind turbine is explained on four bases. Wind mill usually consist of three blades when these blades come in contact with the wind the turbine spins. A shaft of the turbine is connected to the generator. When the turbine spin the shaft spins the rotor of the generator thus electricity is produced.

Wind speed

The most important factor which effects the generation of electricity is wind speed. Knowing wind speed you can easily determine the amount of electricity Coemi wind turbine will produce. Wind speed is measured by inbuilt anemometer. The information from this instrument is carried to a controller which starts up the turbine even if the wind speed is 2.5m/s and convert energy obtained into electrical energy. It adjusts automatically its position to prevent all setup from damaging when the wind speed is very high up to 40mph.

Importance of blade design

Blade design matters a lot in generating process. The design of the blade should be such that can stay strong and operate in bad climate conditions. The blades are light in weight and are start generating process at low speed from 2.5m/s. Read the full story

Solar inverter is a great tool that utilizes sunlight and converts it into reusable electricity. It is an integral part of a solar generator. Solar inverter can be bought separately or along with the solar panel and battery for setting up a fully functional solar power system.  If you are considering buying an inverter separately then make sure you are going to buy an inverter that matches with the wattage output of the solar panel that is installed in your home.

Working of Solar Inverter

Solar inverter works on a very simple principal that is receiving sunlight by the solar panels and conversion of that sunlight by the help of solar inverter into reusable electrical power.

Standalone Inverter

The power that is generated by the solar inverter is stored in batteries. This is the point where inverters are needed. Solar inverter converts the direct current (DC) that is stored in the battery. That DC is converted into the alternating current (AC) that is then used for domestic purpose for powering electrical equipment and devices. The inverter that performs this simple task is referred to as the standalone model.

Synchronous Inverter

In this type of inverter energy from the photovoltaic (PV) module or a solar panel is directly connected to the utility grid, in such a case a grid-tie inverter or a synchronous is required for that energy. The synchronous inverter performs the same function as the standalone inverter does. It converts the direct current (DC) into an alternating current (AC). Read the full story

Solar power energy is serving for a variety of purposes. In the past few years, more forms of solar power energy have become popular among green people. These consumers also directed towards ways by which they can keep the track of the performance and efficiency of their solar power system. One of the most popular ways to become more efficient when operating a solar power program is to utilize a tracking base. Following are the few important things about running a photovoltaic system:

Advantages of Tracking

You can enhance the energy production with the tracking because tracking-arrays get more sun power when it is at its peak. This allows the installation of a smaller array and reduces the required array footprint that is beneficial for sites that do not have much space available. Tracking array can also be beneficial for the kits with wide open solar access. The sun power that is received during early morning and late hours can be sufficient, especially during low summer times during which at most northern latitudes, the rise in the northeastern region and sets in the northwestern region.

Appropriate Applications of Tracking Array

Surplus power is only advantageous in the case when can easily sell it or store it for future use. In this case, a utility connected system with wide open sun window can be very beneficial option for a tracked array. It is because every kilowatt-hour will be utilized. Read the full story

Grid tied solar power systems are by far the most common types of solar power systems. These systems have been adopted by a great number of people. If you are considering installing a grid tied solar power system in your home then you should first fully understand all components of grid ties solar power systems.

Utility Connected Systems

Utility connected system create electricity from the sun by a process and then this energy is supplied to the house where it is needed according to the amount that is needed, while the surplus amount of energy that remains unused is moved to the utility grid. According to the Public Utility Regulatory Act of 1978 (PURPA), all public utilities are directed to buy the surplus amount of energy from small energy producers, for example, you and your home.

Net-Metering

The above process is actually called net-metering that simple means that the public utility has to pay you for the electricity which you give back into the utility grid. In net-metering your electricity meter runs in backward direction and gives you credit on your electricity bill. However, it is not necessary for the public utility to pay back you the same rate that you usually pay off them for using the electricity. In simple words it indicates that there is often a gap between the utility rates.

Types of Grid Tied Solar Power Systems

Generally, there are two distinct types of grid-tied solar power systems hat are readily available at marketplace. These are system with battery back up and system without battery back up.

Grid –Tied System With Battery Back Up System

This type of grid tied system comes with a built-in battery that provides energy to your house during the absence of sunlight like during nights and cloudy days. Read the full story

Third generation solar cells include a variety of solar cells like nanocrystal solar cells, photoelectrochemical solar cells, polymer solar cells etc. Solar cells of the third generation of solar technology are basically evolved from the previous two generations of solar technology i.e., first and second generation solar cells. It is because these cells are not reliant on traditional p-n junctions for the electron separation from their charge carriers.

Functioning of Polymer Solar Cells

Polymer solar cells of third generation work on the same principal on which other solar cells are working. These solar cells are also collecting sunlight and converting it into electricity. Polymer solar cells just like carbon, foil and plastic solar cells are the great substitutes of costly and complex silicone cell production.

Features of Polymer Solar Cells

Polymer solar cells are very affordable as their production costs are only a third of the total price of the first generation silicone cells production.Also, polymer solar cells are flexible and disposable.

Molecule Level Production of Polymer Solar Cells

These solar cells can be designed or tailored on a molecule level in the following manner. A solar cell can be built when molecules or fullerenes solely comprised of carbon that are injected into polymer. After the injection of carbon molecules, a visible light travels from the polymer chain to a fullerene molecule. Read the full story

Most solar homes are constructed using the same basic building principals of solar homes. However, two solar homes are not necessarily exactly he same. There are certain elements that are necessary for increasing the efficiency of solar home, resourcefulness and utility so they can be called “solar homes”. Following are these important elements.

Orientation of Solar Homes

Orientation of solar homes is very important because sun is the empowering and guiding force behind all the setup of solar panels, so solar homes must be built in a style in which the can face and receive sufficient sunlight. It simple means that all the rooms that need frequent inhabitation must be located on the south side, so hey can absorb a considerable amount of sun heat.

Shading of Solar Homes

Shading of solar homes also holds great importance. Shading protects home during cozy temperatures. It is important for solar homes to have shading during the scorching summer times. Shading is required to be manifested in skylight coverings, window coverings, landscaping and trees. Read the full story

The main focused area of solar gable fans is the top floor ventilation. It contributes to the air flow throughout the entire home during the ventilation process. The solar gable fans are installed on the exterior of the gable end on the top hat portion of the gable exterior wall that extends up above the wall end of the home and onto the end of the supporting device that is holding up the roof. The end of the attic is signified by the gable ends and gable ends are the best place for a fan. Most often gable ends are also installed with the vents to allow air flow through the attic.

Electric Attic Fans vs Solar Fans

In certain cases, electric attic fans are also deployed on gable ends in order to increase the air flow and to ensure better ventilation. However, conventional fans that are wired into the electrical system of the home, increase the utility bills and add tax that electrical system. On the other hand, solar gable fans have proved to be a feasible alternative. These fans offer al the benefits of the electric fans and the best thing about gable fans is that they don’t carry the drawbacks like the conventional electric fans. Most homeowners can choose to deploy the fan without any external help because the installation of fan does not require wiring. Read the full story

Evaporative or swamp cooling is just another use of solar energy.  Direct evaporative cooling is widely utilized in residential places.

Direct Swamp Cooling for Domestic Use

This type of cooling utilizes an open circuit design. This type of cooling is quite similar to the traditional cooling systems that have always been used in hotter and lower humidity climatic conditions.

Working of Evaporative Cooling

These cooling systems are quite simple and directly convert water molecules into vapors. In simpler words, the hot and dry air that enters the home is converted directly into cool and moist air. The hot air that enters these cooling systems passes through the moist pads that are deployed within these systems. These moist pads start the process of water evaporation and that evaporated air is then distributed to the entire house in the form of cool and moist air. On other words, hot air strikes the moist pads on one side and released from the other side of the pads as cool and moist air. Read the full story

Solar pavers provide safe lighting to roadways during the absence of sunlight. They are charged by sunlight and don’t require wiring for installation and working. Solar pavers offer a wide variety of application such as they can be used for lighting pathways, driveways, decks and patios. All these ways are lit by the wireless LED perks of solar pavers.

Advantages of Solar Lighting

Solar lighting offers a number of advantages. Solar pavers are very helpful in keeping the enviroinment safe and clean in comparison with traditional lighting bulbs that are not beneficial for environment. Some of these advantages are as follows:

• Solar lighting is environmental friendly and poses no serious harm to environment
• Solar lighting is safe
• Its installation is very easy
• It is not very expensive, although solar pavers can be costly because they are built extra strong so they can endure foot and car traffic. However, wireless installation is economical and it saves on both money and electricity.

Characteristics of Solar Pavers

Solar pavers come with great characteristics. These are scratch-resistant and also waterproof. Solar pavers are the perfect examples of integrated solar lighting. These pavers are available in a variety of forms. The most common shape of solar pavers is round, square and rectangular. These solar pavers are easily deployable during the installation of new paver patio, walkway, or driveway. Read the full story

A photovoltaic (PV) cell or a solar cell is itself an important element of a solar panel or module. Solar or photovoltaic cells are made up of a material (usually silicon). This material functions as a semiconductor.

Silicon Solar Cells

Usually, silicon is used to produce solar cells. There is wafer-thin sized silicon that absorbs solar heat and generates electricity as either electrical current or free-flowing electrons. These electrons or electrical current is captured by diodes that are connected to the semiconductor.

Other Generations of Solar Cells

Silicon is not the only most popular and sully functional element of solar or photovoltaic cells. It is because there are two other distinct generations of solar or photovoltaic cells. Each of these two generations is having different important elements, but all generations are working to achieve the same goal.

Thin-Film or Second Generation Solar Cells

Thin-film solar or photovoltaic cells make the second generation of solar cell technology. However, the solar cells of second generation may still use the silicon as the main material source (usually amorphous silicon). In addition to this, second generation solar or photovoltaic cells also utilize other materials like copper indium gallium selenide (CIGS) and cadmium telluride (CdTe). Read the full story