How Solar Panels Are Used

July 4, 2009 by Gary Killops  
Filed under Green Energy

With each passing day an increasing number of people are opting for solar energy for their household energy needs. One of the most important reasons today for using solar power is to reduce the consumption of the ever-depleting reserve of fossil fuels and the need to eliminate health and environmental hazards due to toxic emissions.

A typical solar power system can be made up of one of the following:

Concentrating Solar Power System - This particular system involves the use of concave mirrors and other panels to concentrate the heat from the source. This concentrated heat is then transferred to a generator. As compared to the conventional methods of producing solar energy this system involves considerably less dissipation of heat leading to low wastage of energy.

Photo voltaic System - This system can convert the light from the sun directly into electricity. It contains a particular semiconductor material which when comes into direct or indirect contact with sunlight, produces electricity. A DC to AC converter can be used to convert the raw direct current to its usable alternating form. The current can also be stored for later use with home appliances.

This system is more appropriate for people living in remote areas with little or no proximity to power lines, the only requirement being a fairly continuous supply of sunlight all year round.

Some interesting applications of the systems mentioned above are as follows:

Water Heating - The choice of a water heating system depends on the climate conditions and in most cases, will require some measure of freeze protection. Closed loop systems and heat exchangers are appropriate for cold locations. Direct Pump recirculation systems can be used where freezing is less frequent. The Batch Water Heater is a highly effective implementation of a solar heating system.

Space Heating - A simple, inexpensive passive solar heater can be used to heat spaces like shops and barns. A Thermosyphon Solar Heater does the job as far as space heating is concerned. The thermosyphon collector must be designed to reduce airflow resistance. High flow resistance will make the collector temperatures rise leading to energy losses and lower efficiency.

Pool Heating - Pool heating is a great solar application. The basic component used for a pool heater constitutes an unglazed plastic collector. The pool itself will act as the heat storage module for the system and the pump used to filter pool water will be used to flow water through the collectors. This system may cost as low as $100.

Solar Water Pumping - This is one of the simplest application of solar power systems. It works only when the sun shines. The rate of flow of water is very low so a storage tank is necessary.

Passive Cooling - Passive cooling is based on the interaction of the area you want to cool with its surroundings. This method is a little complicated and will include a careful study of your areas local climate. This method can eliminate the need for mechanical cooling (achieved through heavy refrigeration) or at least reduce the cost of equipment and its size.

Reduce energy usage

July 2, 2009 by Gary Killops  
Filed under Green Energy

The most dificult day of every month is when time comes to pay bills and mostly the enormous electricity bills that we get. It’s high time and we need to take serious measures to reduce the power bill. Do not worry. We will share some key tips and will make you reach your goal.

Make sure to discuss with family member about the importance of saving electricity. You can reward them a treat if their participation has led to savings. Suggest them some tips like switching of the lights when they are not present there and attending a call in another room or having dinner at the dining table. Make sure to switch off all the appliances even if you are sure to be back in five minutes. Yes, that will help a lot. Every drop of water makes an ocean.

We may prefer to switch off the television set or turn off the fan, but not the tubelight.We need light at the time of night but see that the usage is required in all the rooms or not.Taking care of such these small precautions will surely leads us to savings in the long run by reducing the bills of the power demon.

One should plan to invest smartly on power. Replace all the incandescent bulbs present in the house with compact fluorescent light or those CFL bulbs. These bulbs consume less electricity as they consume less power.

Buy the energy saver gadgets that are available in the market. Such gadgets will monitor the intake of the entire power supply in your house and makes you take decision on how to control the usage.

Most of us assume on the fact that the rise in electricity bill is due to the vast number of electrical items present at home. But the truth is that the electricity bill is not directly connected or affected due to the number of gadgets, but by the way one uses them.

Take a step forward to avoid using those typical items regularly that consumes lot of power -

• The washing machine should be used only when there is a bucket full of clothes.
• The geyser should not be kept on for maximum amount of time.
• The air-conditioner should be kept at minimum high or low temperature.
• Take note to switch off the computer monitor when not in use. It consumes maximum power and it just takes a second to switch it again.

Lastly we suggest that for reducing the electricity bill by taking benefit of reading the energy saving guide like Earth4Energy that has some of the best solutions to generate energy at home and providing free electricity to some of your home appliances. In this way we can save power that is facing a huge shortage because of the large demand in the global countries. Try to reduce the requirement of those electrical wires and sockets for home and use the renewable energy extracted from natural resources like wind, sun, tides at a lesser price but having a long term returns.

Make power at home with solar and wind energy to eliminate your power bill. Get our complete guide

Wind Power as a Viable Solution to Meeting Alternative Energy Needs

December 14, 2008 by Gary Killops  
Filed under Green Energy

Although it is much less expensive to initially get hooked into the local electric company’s grid than it is to set up and hook into wind turbines, in the long run one saves money by utilizing the wind for one’s energy needs—while also becoming more independent. Not receiving an electric bill while enjoying the advantages of the modern electrically-driven lifestyle is a wondrous feeling.

Electric bills and fuel bills are rising steadily—but the cost of wind turbine energy is zero, and the cost of installing and hooking up a turbine is steadily coming down as demand rises and more commercial success is realized by various companies producing the turbines and researching technologies to make them ever more efficient. In addition, people are moving away from the traditional electric grids and the fossil fuels for personal reasons including desire for greater independence, the desire to live remotely or rurally without having to “go primitive”, political concerns such as fears of terrorist strikes on oil fields or power grids, or concerns about the environment. Again, this motivation to get away from the traditional energy sources is the same one that causes people to seek the power of the wind for their energy, giving more business opportunities to profit from wind turbine production and maintenance, which drives their costs down for the consumers. In nearly thirty states at the time of this writing, homeowners who remain on the grid but who still choose to use wind energy (or other alternative forms) are eligible for rebates or tax breaks from the state governments that end up paying for as much as 50% of their total “green” energy systems’ costs. In addition, there are 35 states at the time of this writing where these homeowners are allowed to sell their excess energy back to the power company under what are called “net metering laws”. The rates that they are being paid by the local power companies for this energy are standard retail rates—in other words, the homeowners are actually profiting from their own energy production.

Some federal lawmakers are pushing to get the federal government to mandate these tax breaks and other wind power incentives in all 50 states. Japan and Germany already have national incentive programs in place. However, “A lot of this is handled regionally by state law. There wouldn’t really be a role for the federal government,” the Energy Department’s Craig Stevens says. And as might be imagined, there are power companies who feel that it’s unfair that they should have to pay retail rates to private individuals. “We should [only have to] pay you the wholesale rate for … your electricity,” according to Bruce Bowen, Pacific Gas & Electric’s director of regulatory policy. However, the companies seem to be more worried about losing short term profits than about the benefits, especially in the long run, of the increased use of wind turbines or wind farms. Head of the Center for Energy Efficiency and Renewable Technologies of California V. John White points out, “It’s quality power that strengthens the grid.”