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Is solar energy system really safe?

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Solar panel technology is the kind of energy that is derived from sun light. It is among the most environment friendly power sources available in the world. There are plenty of environment advantages of choosing solar energy and also the greatest benefit is that there are no carbon emissions from using solar energy. There is no air pollution and it is a renewable source of energy. Greater than being renewable it is generously accessible around the globe. Also, it is more reliable natural source than wind.

While using the wind energy can also be a genuine cause to protect the planet, the installation and huge sized equipment tend to create a different sort of pollution, noise pollution. If just one wind mill is located at a distance, one may not hear and feel the noise. However, if there are too many wind mills in one area, the noise levels will be much higher and can become a source of noise pollution. That is why people often prefer solar energy systems to wind energy systems.

Installing of solar energy system is very easy and it does not take much space. It is not noisy and it is used just to absorb sunlight and convert it into electricity. It does not give out any toxic waste or poisonous gases. If a lot of people use solar energy, then the burning of coal, which is a fossil fuel, to generate electricity may come down rather significantly. This will help us to preserve the fossil fuels, reduce the carbon emissions and also down size the progress of global warming.

With the several advantages, it’s possible to say undeniably that the impact of solar energy for the environment is truly a good one.

These days, the effectiveness and stability of solar technology is questioned. Nevertheless, technologies working with solar energy are continually improving and soon we could have an answer to these two issues.


Written by onpowers

14/09/2011 at 2:22 am

Basic information about how wind generator works

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The simplest way to be aware of how wind generators work is to think of a fan operating in reverse – instead of electrical power rotating the blades and therefore producing wind flow, the wind spins the blades, thereby producing usable energy.

To be expanded on that generality, the turbine’s blades are attached to a hub that’s mounted atop a turning shaft which runs into a gear transmission box that increases the turning speed which, in turn, is connected to a high speed shaft that cranks the generator. If the wind speeds get too high, a brake is deployed to slow the blades down and prevent damage being done to the system.

How big wind powered generator will influence its power generating capacity, with the smaller windmills that produce under 50 kilowatts being the kind most often helpful to strength water pumps, telecom dishes, and homes.

Within an innovative progression called hybrid wind systems, these smaller turbines are also being used in combination with solar (photovoltaic) systems, rechargeable deep cycle batteries, and diesel generators to provide storable, on-demand power in more remote, off the grid places.

For most non commercial situations, wind powered generator is utilized as being a additional power source together with local, on the grid, utility power. There is something called a cut-in speed (7-10 miles per hour), below which the wind turbine will cease to provide an output, and the utility grid provides the structure’s power. Above the cut-in speed, the wind turbine kicks in and the grid power supply is proportionately reduced (depending on the structure’s energy draw at the given moment).

Inside a common property that utilizes below 10,000 kilowatt hours per year of electric power, a 5-15 kilowatt wind turbine should more than suffice. This type of system can run anywhere from $6,000-$22,000 to install, depending on a variety of factors, including: its size, your intended application, and any service contracts entered into with the manufacturer.

The bigger wind generators have functions up to 50 kilowatts, running these days into the several megawatt ranges. These windmills, known as utility scale turbines, can be grouped together and connected to central lines for transmitting and distributing in bulk to the local utility grids that, in turn, sell that power to homes and businesses across the land. They are known as wind power plants or the wind farming.

Written by onpowers

14/09/2011 at 2:06 am

Source powers for electriity

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Electrical power has numerous various resources. These options for energy could be split up into two primary types particularly the renewable source of energy and the non-renewable source of energy. The sun, water and wind sources of energy fall under the category of the renewable sources. However, non-renewable types of energy have 2 types that are non-renewable fuels and nuclear fossils.

But due to the decrease in earths normal resources, other sources of energy that are used in order to produce electrical energy are becoming the interest on the consumers. People add to the increase of global warming as they continue to burn gas, oil, coal and the earth’s rainforest. The constant use of the fossil fuels has resulted to the reduction of its supply creating a problem for it has reached it critical stages. Before achieving to the point that these non environmentally friendly sources of energy run out, there should be one thing to get carried out as quickly as possible.

Presently, so many people are profiting from the renewable source of energy to provide them with electric power. The devices that were being utilized by these renewable sources of energy have been around and have been modernized and operated with help of the latest technology. These modernized and advanced equipments are being used to generate solar power, wind power and hydropower. As these are environmentally friendly sources of energy, which means that these sources are natural, constant, free and abundant.

The choice of energy that uses windmills, wind turbines and sails to be able to give a specific area with electricity is known as wind power. The winds are caught by the windmills through its massive blades making them turn. When it rotates, it turned a shaft and the shaft will turn the millstone. But at present windmills are connected to turbines to generate electricity. Hydropower is another source of alternative energy. This alternative source of energy is produced by the use of water. Water is being used to turn a wheel which is connected to a mill. Presently, waters that are released from a dam turn the blades of the turbine which is connected to a generator producing electricity. And the last commonly used alternative source of energy is solar power. This is actually the energy that comes from sunlight and currently being transformed into heat or electricity.

Written by onpowers

14/09/2011 at 1:52 am

What is solar powered energy?

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solar power energySolar powered energy is indisputably the future of energizing our metropolitan areas as well as your house. Modern countries are changing from dirty and expensive fossil fuels to commercial and residential solar power applications. If you’re planning to produce the switch on your own it’s a good idea you know the basic principles before deciding.

Using solar technology is by means of solar photovoltaic cells which are developed in modules and are then called solar panels. Once the panels are struck by sunlight, electrically charged particles of the light energy are then dislodged from a molecular level. The photoelectric effect is the phenomenon responsible for the technology. A mistaken idea is held by many people about the process; it is not the sun’s heat that’s transformed into electrical energy, but instead the lighting energy.

When power transformation is completed DC current is created, nevertheless this is not a useful form of electricity. A solar inverter is required within the system to convert the DC form into useful alternating current or AC. Inverters are also responsible for the total efficiency of the system. A very good inverter can raise the overall end result by at the very least 20% and some inverters come with LED display to monitor and keep track of the system’s performance.

Another essential element of the device may be the smart meter that has 2 types. The net metering, which computes your total net export of electricity to the grid (difference of import and export) and the Gross Meter which computes your import and export of electricity separately. Australia’s state governments have implemented various bonuses and schemes functioning under either net or gross meters. It is best to understand what the local authorities regulations are and check 1st what current solar schemes and rebates can be purchased in your location before deciding what things to set up.

Lastly getting understanding of your geographic location’s optimal sun position is very useful. Maximizing the available sunlight which can hit your solar panels daily should be the aim in every installation. Thus roper angling and any shading are important considerations.

Some green power sources

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As being the planet will continue to grow older, humanity is persistent on creating various resources for energy. Nevertheless, not every what has been produced from the human thoughts are useful for the planet. Several of these present danger to the existing life forms, and created social and ethical dilemmas around the globe. It is about time to work through these energy sources and retain those that are geared towards the green power generation.

There are numerous sources of energy that can help maintain the planet and keep it free from harmful materials. A few of these are the following:

Solar power – this source of energy is capable of doing energizing the whole planet if a minimum of one 4th from the total number of countries will use it. It is available in most nations and it is as reliable as the geothermal source. However, it is more expensive to put up.

Tidal power – this is really an appealing supply of energy. It utilizes the current of the tides or waves to power turbines that in turn generate electricity. It is still limited to some countries that has frequent occurrence of large waves.

Wind power – this really is an additional outstanding type of eco-friendly power source that work well in windy areas. It requires using wind mills, wind turbines, and wind pumps to turn on an electric power generator. It is widely used in several countries in Europe and in some parts of Asia. It is an excellent source of energy simply because it doesn’t release green house gasses.

Geothermal power – this kind of power comes straight from the extreme heat transmitted from the central of the planet. It’s affordable and much more trusted when compared with other green power sources. Nevertheless, not every country around the globe can avail this kind of energy because some are located at a remote distance from the core.

These environmentally friendly energy resources can replace the present supply of energy that the world is using. These are cost effective and can definitely save the earth from the perils of green house gasses and global warming.

Written by onpowers

12/09/2011 at 11:07 pm

Medical Grade Power Supplies

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Many technical factors distinguish standard commercial power supply units from medical grade power supplies. Even the standard units are produced to certain quality specifications, but the standards set for medical grade equipment are much higher and are strictly enforced, as the smooth functioning of the power supply plays a vital role in the diagnosis and treatment of patients. Reliability and safety of operation are of paramount concern, so stricter quality control standards are placed on manufacturers producing equipment for the medical profession.

The IEC (or the International Electro technical Commission) is the world’s leading organization that prepares and publishes International Standards for all electrical, electronic and related technologies — collectively known as “electro technology”. And its standard ‘IEC 60601-1-2 Ed. 3.0’ collateral standard applies to electromagnetic compatibility of medical electrical equipment and medical electrical systems and the object of this collateral standard is to specify general requirements and tests for electromagnetic compatibility of medical electrical equipment and medical electrical systems. They are in addition to the requirements of the general standard and serve as the basis for particular standards. Medical Grade Power Supplies too fall under the purview of this organization.

Consequently, the amount of research and development involved in the manufacture and production of medical power supplies means that only a few producers actually have the expertise and resources to tackle the field. Further, the product liability complications which may arise due to faulty performance are tremendous, as a vulnerable patient could suffer serious harm or even succumb if faulty performance causes the dependant medical equipment to malfunction. All these issues have led to only a few companies manufacturing high grade Medical Grade Power Supplies.

Thus it is worth taking note of a prominent player in this field, namely the Mean Well Enterprises Co., Ltd. As a leading switching power supply manufacturer of the country it is a well established firm founded in 1982, it has earned for itself a reputation for high quality enabling the achievement of 28% sales growth in the past years! It has many standards accreditations and its medical grade power supplies conform to relevant medical regulations (e.g. – the Mean Well MPD-120 Series – 120W Dual Output Open Frame Medical Power Supply conforms to UL60601-1 and the PM-10 Series – 10W Single Output Encapsulated Medical PSU is UL60601-1, IEC60601-1 & TUV EN60601-1 medical safety approved). When buying Medical Grade Power Supplies, trust only the best-patient’s lives may depend on it!

Written by onpowers

29/05/2011 at 10:15 am

Everything you want to know about LED lighting power supplies

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led-lightingBecause LED lighting is proving to be more energy efficient, longer lasting and less inclined to fail, its technology has been adapted to suit to a wide range of applications including architectural lighting, task lighting, medical lighting (particularly for use in surgical theatres), transportation, entertainment, lit signage and moving signs, safety and security applications and outdoor area lighting.

LED lighting has a huge range of applications, and is becoming particularly popular with homeowners looking for a more energy efficient method of creating lighting effects around the home such as recessed lighting or under-shelf mood lighting. As they become more popular, LED lighting power supplies are becoming much more common in domestic settings as well as commercial ones, and the costs mean that they are within reach of anyone who wants to use this form of lighting. As always, it is highly recommended that you speak to an electrical expert who specializes in LED lighting systems before beginning work on any project that may involve solid-state lighting systems.

As LED lighting has become more popular and its range of applications is so wide, specially designed LED lighting power supplies have been created to work in tandem with systems, particularly those that are used outdoors. As always, safety is the primary consideration, but the best LED lighting power supplies should have the following functions:

  • Built-in constant current limiting circuit with adjustable OCP level.
  • Suitability for LED lighten and moving sign applications.
  • Short circuit, over load, over voltage protections to prevent power surges from damaging equipment.
  • Universal AC input, allowing the full range of applications.
  • IP64 design for indoor or outdoor installations, maximizing protection against water damage or dust particles damaging the delicate electronic circuitry.

Built-in dimming function: 1~10VDC or PWM controlled, allowing the light levels to be adjusted to create different effects.


Written by onpowers

16/05/2011 at 2:53 am