Solar energy systems are becoming popular with home owners desiring to lower the utility bills and make their homes more environmentally safe. A popular alternative to electric power is a solar power system. Solar energy was one considered as something only dreamed of, belonging to the future, but today any home could have the reality of a solar energy system.
Solar power uses panels make light into electric power. These solar panels absorb the strongest source of light on earth which is the light of the sun. These are referred to as photovoltaic and PV systems. PV systems are the simple types and Photovoltaic system is the more complex type. The simple types operate calculators and watches and the more complex types are used to power water pumps and equipment used for communications as well as to power a home. The complex types often can be seen on top of homes and other buildings. PV cells are composed of silicon semi-conductors.
These receive the power of light from the sun transforming it into electric power. The Solar power system cost is determined by the size of the home and the power needs of the family. Over the past 20 years the price of solar power systems has declined by about 80 percent with the cost presently between 20 and 40 thousand dollars for an average sized home. Fortunately with such… Continue reading
The complete plan of using a laptop is the handiness it provides of mobility. Nearly everyone who uses a laptop has experienced the irritation of running out of power. And finally, we find that we require power the most right in the middle of vital work or the most difficult time. Having all this in mind, there are numerous different alternative choices for outside laptop power other than the inside of the laptop battery or the power supply that shipped with your laptop. The advantages of these different alternative choices provide some things like long battery life, lighter weight, & backup power options.
90 (ninety) minutes is the normal life of a laptop battery, which is often not sufficient time to complete much of your work. The other choice of power is the outside battery (external). Nearly all these outside batteries (external) as such that their wattage and connection type is not exact for the type of laptop; permitting you to use them on most common laptops. General laptop brands available in the market Acer, Sony, Dell, IBM, HP, Lenovo, & Gateway. These outside (external) batteries can often sometimes enlarge the life of your laptop as much as ten hours; now you can certainly get some serious work done in ten hours as opposed to the usual 90 (ninety) minutes.
Most of us think the outside (external) battery being heavy… Continue reading
Outside of solar power, the next most prevalent alternative energy source is wind power. This technology is being embraced around the world is continuing to gain a lot of attention from the science world because of it being right in step with the “clean energy” movement. From large wind farms to wind power homes, from stand alone units to ones used merely as backups to solar energy systems, this technology is sweeping nations around the world.
Let’s start with a quick lesson on wind power itself. Wind energy is really a form of solar energy. Confused? Don’t be. As the sun’s rays hit the earth’s surface it is absorbed at different rates. For example, land temperature will rise and fall much more rapidly than a body of water during daylight hours. The air temperature differences create air pressure differences. Varying air pressure differences over an area is the recipe for wind, as air always travels from high pressure to low pressure.
Now in the case of wind power homes where a windmill/wind turbine is present, the motion of the wind is referred to as kinetic energy. As this wind energy (kinetic) passed through the blades of a wind turbine, motion is created. This motion is used to create electricity via an electrical generator that’s coupled to the turbine. The electricity produced by these generators can be stored for later use… Continue reading
One of the main benefits of solar power is that it’s powered by the sun, which is a renewable fuel source. The sun can provide you with power for the rest of your life. Using solar electricity in a home or business offers many benefits such as reducing utility bills. Many states also offer tax breaks for people who install solar panels. This will cover most of the fees for hiring solar contractors. In addition, if the solar panels bear on extra power, that power can be sent to the power grid, and your utility company will pay you for sending it. Keep reading if you want to discover the benefits of using solar power.
Typically, solar panel installation lasts for 30 years or longer. After this time, it will need to be replaced.
Even if you don’t convert to solar electricity completely, small solar panels can still help you reduce your bills and light up your house or business.
Many solar power systems also come with back-up battery storage, so it can still be used at night, on cloudy days, and in bad weather. The batteries hold enough energy to power a house or business for a week or longer without sunlight. If extra power is needed, solar contractors can connect your system to a power grid.
The advantages of solar electricity are far-reaching. Solar electricity is a renewable… Continue reading
Wind power: Nature and Origin
The solar radiations give birth to wind. These radiations heat up the surface of the planet earth, although in unequal proportions. This uneven heating follows as a direct result of the abrasive earth surface, rotational planetary movements as well as the continuously altering propensities of heat absorption of the different levels of the earth’s atmosphere. The seas, oceans and vegetation types on earth play important roles in this regard as well. As a result, some parts of the planet experience consistently higher temperatures than certain other parts, all round the year.
For example, the poles of earth remain covered by snow and are always way colder than the warm equatorial regions. As a result of this phenomenon, air in the warmer parts grows lighter and less dense, and as such, begins moving in the upward direction. This creates a sort of vacuum in their place, which gets occupied rather quickly from the colder, denser, heavier air from nearby locations. Wind is defined as this movement process of air, and a form of kinetic energy is released from it. Modern technologies are made use of to acquire wind energy from this kinetic energy. The procedure of tapping and using wind energy to produce such outputs that can be used multiple number of times (like, electricity) is termed wind power.
Global usability of wind power
Wind is… Continue reading
Start time: 2005-11-16 End time: 2005-11-18 Venue: Shenzhen Hi-Tech Fair Exhibition Centre
Contact: Zhou Jie Contact Phone: 020-86335409 Organizers: China Power Supply Society Sponsor: By Bo Guangzhou Exhibition Service Co., Ltd.
Show Overview: organizer authority China Power Supply Society, more than 20 years, inclusive of the national power academia and industry, China’s power industry authority. Awarded in 1999 by the National Science and Technology within the international exhibition organizer qualifications, has been successfully held in the national tour of the 10th international power-related exhibitions.
power industry event The exhibition was first held in Shenzhen, the Pearl River Delta is China’s power enterprises are concentrated, and the power supporting many enterprises. This exhibition is accompanied by a large academic annual meeting, a number of technical exchange, the authority of Development Forum, to attract Chinese and foreign power industry executives gathered in Shenzhen, will be a set of display, trade and exchange as one of the power industry event.
bridge supply and demand sides Guangdong is China’s most economically developed areas in China, is China’s power industry’s largest production and export base, trade and financial center, and carries a vast supply market. Organizers will be set 10 years experience, large user network, extensive publicity, inviting users to bridge the supply and demand sides.
technical exchange platform China Power Supply Society Sixteenth Annual Conference and… Continue reading
Here’s a good battle that needs to be fought. Let’s allow the two most common forms of alternative energy to face off, hand to hand, technology to technology, and see which one is better for you. These are the types of solar panels available to anyone, and small consumer wind turbines, not the big wind farm types. So folks, put on your gloves and let’s get ready to rumble.
Placement – Solar panels will fit on any roof, but it has to be south facing. There are no local laws or ordinances that will not allow solar to be put up. Wind turbines generally need to be mounted high off the ground for optimal efficiency. Many local laws prohibit towers or structures in cities or suburban neighborhoods. Solar wins hands down and is perfect for city dwellings.
Performance – Solar panels need sunlight to work efficiently, although the newer panels produce useable electricity on cloudy days as well. Windmills need wind, so in theory, they could produce electricity 24/7, BUT that just doesn’t happen. The reality is, both technologies are dependent on mother nature, so we have to call this one a draw, although in naturally sunnier climes, solar has an advantage.
Efficiency – When the sun shines, your solar panels are producing 100% of their rated power output. Wind power needs a minimum of 5 mile per… Continue reading