Archive for November, 2009
Different Wind Turbine Blade Designs
For centuries now, people have been using wind turbines to generate energy. Even now, the basic principle behind this type of device remains the same, but design aspects of the blades used have undergone major changes over the years. The basic advantage of modern blade design is that it allows wind turbines to generate power more efficiently now than ever before, which in turn makes it realistic to use smaller and quieter turbines.
Mats made out of reeds were used as the blades for the first-generation wind turbines. While they did the job under the right conditions, they broke easily. If the winds got too high, these blades would usually be damaged.
The next stage in the development of wind turbine blades was the cloth sail. With the help of this blade design, early windmills were able to harness wind power effectively in order to process grain.
The next major kind of blade to be introduced was the wood blade, which was usually used in conjunction with a horizontal axis configuration. The impetus for the new turbine designs was the design of airplane blades, which had recently made major strides. Although much lighter, wooden blades were nevertheless able to provide much more power than earlier turbine blades.
These designs allowed turbines to be used for the purpose of generating electricity. Larger wind turbines were soon built to capitalize on these improvements, providing power in commercial settings.
From this point on, wind turbine blade development separated into two distinct paths: horizontal axis blades, and vertical axis blades. With regard to horizontal axis blade design, the majority of the changes would manifest themselves as differences in blade shape and pitch, materials, and the number of blades used per rotor.
In most cases, 3-blade designs came to be used for horizontal axis wind turbines, as they provide the best balance of stability and rotor speed. Modern turbines make use of composite blades, which are both lightweight and durable. Unlike older turbines, these new turbines can both spin at higher speeds and pick up winds of lower velocity.
Some of the most radical and effective designs on the market currently can be found on vertical axis wind turbines. The rotation for these units is usually provided by features that take advantage of either the lift or drag of the wind.
Regardless of the direction of the wind, modern vertical axis turbines will always convert it into energy. In this respect, they can give you a more constant supply of power than standard horizontal axis turbines. Residential users will find vertical axis turbines particularly attractive, as they generally don’t require a tower or an open landscape in order to get the best production.
If you would like to know the pros and cons of solar energy, take a look at Advantages and Disadvantages of Wind Power.
For the best guide I have found for building your own wind turbines with step by step videos, go to Best DIY Solar and Wind Guides.
Here’s another guide to building your own wind turbine Homemade Wind Turbine.
Solar Panels for Homes
When it comes to lowering your electricity bill, solar panels are a great choice. A homemade solar panel is surprisingly easy to build, and can help you save a lot of money in comparison to pre-assembled units. You can even save a lot of money when installing a solar power system by using a solar panel kit. It provides the instructions needed to build a solar panel at home. For further information regarding this kit, go to Solar Panel Kit.
Solar cells are the components that actually turn sunlight into electricity. If you know what type of power you require, you can get started, as solar cells, depending on how they’re connected, can provide virtually any amount of voltage and current.
Currently on the market are two basic types of solar cells. The greatest level of efficiency is offered by monocrystalline solar cells. Monocrystalline cells are also generally more durable than other kinds of cells. Of course, this type of cell is also moderately more expensive than the alternative. The alternative is the polycrystalline cell, which is made up of a collection of smaller crystals. Polycrystalline cells are less expensive, but they don’t produce as efficiently as monocrystalline cells do.
Once you have the solar cells, you need to connect them correctly in order to get the necessary voltage and current. Most DIY solar panel blueprints will include wiring diagrams. Wiring can be a very exacting aspect of any project, so it’s important to follow the diagram as closely as possible. You need to make sure that the solar cells will all be facing the exact same direction; this can be accomplished by mounting them on a piece of thick plywood. To figure out how big the backing board needs to be, just lay out the cells as shown in the wiring diagram. Refer to the diagram again after you’ve mounted the cells; you can now begin the soldering. Make sure that the wires are secured neatly to the backing board, and that they get between the cells and the sunlight. Once this has been finished, take the panel outside and check the voltage with a meter to make sure that you’re getting the right voltage. If not, there may be a problem with the wiring. When you’ve got the output you need, you can add sides and a clear front part to the backing board. The enclosure needs to be able to withstand the elements, so make sure that you use enough weatherproof caulking.
Now, you can mount the panel in a spot that sees lots of sun exposure. The panel will generate DC electricity, which can be used to charge batteries or power certain small appliances. Most devices in the home use AC electricity; you can get AC power by using an ordinary inverter.
To read about the advantages and disadvantages of solar energy, visit Solar Energy Advantages Disadvantages.
Can you build your own solar panel for less than 200 dollars? You can get more information by reading this guide Homemade Energy Review. In this guide, you will get specific instructions on what is best to build based on the size of your house and your location. You will also get step-by-step diagrams on how to build your own solar power system.
Bicycle To Save Money And Fuel
If you have the privilege of living close to your job, you may be able to change your way of commuting from car to bicycle. Bicycle commuting has several advantages to offer and is a great way to conserve our natural resources, lower pollution and save money. Even if you only bike to work on occasion, every bit helps.
Many people find that biking to work is a great way to get exercise. It not only saves them the cost of fuel, it saves a gym membership. In addition, bikers rarely face problems with traffic jams. They usually can easily maneuver through traffic and may arrive as quickly as car commuters.
Most buses have bicycle racks built onto the front so that both you and your bike can ride and reduce the bicycle commute by several miles. This option may work best for you.
You should begin by making preparations before the first day you bike to work. You need a way to carry everything that is needed for work and keep it dry and protected. One of the best ways is to choose what bicycle delivery persons in San Francisco use, messenger bags. A laptop messenger bag will keep your computer dry and protected during our commute. It will also protect the laptop from any scratches during the day.
You may also want to pick up a few extra messenger bags for the bike. They are nice for spur of the moment purchases such as sale digital cameras or transporting items you will need when you get home such as ATV parts.
As we spend more time on planet earth, we learn that resources are truly limited. The resources that are available are becoming very expensive. We all need to do our own part in conservation of our remaining natural resources for generations that will follow.
Additionally, biking to work is a good way to save our money. Biking one day a week saves 20 percent of our fuel used for commuting. Three days per week saves 60 percent and every day saves 100 percent of the money we pay for fuel.
It is About Time A New Audi Was Made Greener
The Riversimple urban car actually has a very small fuel cell and looks like it is going to be the smallest one to date so far.
Another great thing about this car is that it is actually very small weighing at just a minute 350Kg and is no bigger than the smart car. For a car of its type it is actually quite speedy reaching at around a bout 50mph which is great for the people that live in the city.
Power comes from a 6kw fuel cell, which is tiny compared to the 100kw system powering the Honda Clarity. It uses a composite body to keep the weight down and four electric motors on each wheel, which double as brakes and electricity generators.
There is a bank of ultracapacitors to store this electricity, which in turn provides most of the accelerating power, allowing for a small fuel cell.
One of the really good things about the design to this new car is that once it is all ready it will be made available online for any car manufacturer to take into their own.
The cars themselves will also be leased over 20 years, with fuelling included in the leasing cost, and the materials will be recycled at the end of each car’s lifespan.
The head of Riversimple has always been a strong believer in pushing technology forward and he realises that this is going to be big. Of course we now realise that we much minimize the resource source of selling cars which is what these cars are trying to do.”
“The Riversimple Urban Car represents a major step towards practical 21st century personal transport and towards the fulfilment of my great-grandfather’s ambitions for accessible personal transport but this time combining his other passions: light weight and high efficiency,” said Piech.
The real question to ask is will they be upgrading things like used cars to make them greener? If you have recently gone out and purchased a Audi TT Roadster then you are not going to be pleased when you cannot upgrade it to make it a bit greener. New Audi are just one of the brands that needs to be looked into.
Is Bamboo the Best Sustainable Material to Use?
OK, so the Bamboo PC it was a gimmick. The laptop version of the bamboo PC launched last March at a computer fair in Hanover. It featured a laminated bamboo casing which was around a standard laptop, meaning that no less plastic was needed in making it.
Although the bamboo computers won’t make a huge difference to the environment, it did prove how versatile material really is.
Bamboo must be the only plant on the planet that is a source of food, works as building materials and woven fabrics. One of the early light bulbs created by Edison used bamboo. Because the material is so string, resiliant and cheap to use, it is used widely in building throughout Asia. The fibres within bamboo poles have both high tension strength, as well as high compression strength. It’s compressive strength works out around twice that of concrete, bamboo also has the same tensile strength to weight ratio as steel. Now there’s even a bamboo laptop!
Bamboo will please anyone whose buying eco-friendly home furnishings. For a start, bamboo is an extremely sustainable material. Some bamboo species are able to grow more than one metre every day. Local people are able to cut down as much bamboo as they need for carving or weaving and still have the same amount growing as they did before they cut some down. As for the global warming problem, because bamboo is a plant, all products made out of the sustainable material contains a large amount of atmospheric carbon. The plastic equivalent of a bamboo product is worse for the environment as it actually adds to the levels of carbon in the atmosphere!
Another point is that because bamboo is a plant source, there are many variations between two plants, these variations make it a difficult material to use in a mass production process. What this means is that you can be almost positive that a skilled craftsman has built the bamboo product you buy. If you go to a reputable source you’ll also know that the craftsman got a fair wage for his or her work, and that no one was exploited by western buying power. The final thing is that you’ll be sure that the item you bought hasn’t gathered any air miles during its creation.
With eco credentials this strong, it’s a surprise bamboo built products are so beautiful. Just picture a hand crafted bamboo box, layered 15 times with natural shellac. Both stylish and natural. Only the other day, I bought an amazingly crafted bamboo knife block and am seriously considering following suit with other bamboo kitchen accessories such as salad bowls. Stylish and ethical. Win. 
Green Trends Reinforce Importance of Asset Management for Business
Despite the still parlous state of the world and the UK economy in particular, the pressure on business to be “seen to be greener” will continue to grow.Climate change policies and carbon taxes will inevitably become more significant mechanisms to raise revenues and be seen to be addressing global warming. Part of that trend will be an increasing emphasis on enforcing regulations governing the collection, treatment and recycling of all sorts of waste, especially electrical and electronic equipment as specified by the WEEE directive.
Despite (or maybe because of) the recession, companies need to forge ahead with energy-saving measures and invest in the latest inventory management software, not least because of imminent UK mandatory carbon reduction commitments, and still have to prove their green credentials to consumers and clients who are increasingly demanding that environmental component of virtually every product or service.
Doing all this will create a significant cost for business, unless they get their fixed asset register in order.The days have gone when a simple aspirational statement about green strategies from procurement and recycling would suffice.Organisations now have to show their commitment to green issues through information transparency and fully auditable policies.At the core of this approach has to be detailed information about the life cycle of all their fixed assets, from country of origin and maintenance schedules to final disposal details.
That requires an investment in fixed asset software to replace antiquated spreadsheet models in an attempt to accurately identify the location of equipment, especially that relevant to WEEE regulations, confirm when those items were purchased, from whom they were purchased, and how or where they were disposed of at the end of their lives.By using a comprehensive asset accounting software package that links the asset register to a document management system, companies can create the required audit trail so that they can adapt effectively to the demands of the green economy.
What is the Best Way to Care for the Wild
Climate change alone could result in the extinction of 20-30% of all US plants and endangered animals, says the United States Geological Survey. According to Imperiled Species Coordinator Rachel Muir, “Federal science that is conducted across biology, geology, geographic and water sciences, the social sciences and others is essential for the United States and the world to be able to continue to protect our biological heritage.” To protect endangered species, the USGS is turning to scientific methods like tracking grizzly bear movement with DNA testing, monitoring turtle activity in Everglades National Park, raising mussels in laboratories for release into the wild and restoring Channel Islands’ habitat.
The Sumatran tiger is one of the world’s most endangered animals, particularly because they are highly coveted in the world of poaching and their habitat is rapidly being destroyed by the logging industry. The island’s nature preserve houses 100 tigers but the poachers have managed to find their way into the park to kill. Three similar breeds of tiger — the Bali, the Java and the Trinil — have already gone extinct. It is believed that there are less than 400 Sumatran tigers in the wild. Similarly, the Siberian tiger has been whittled down to less than 200 existing in the wild. The Association of Zoos and Aquariums has 1,000 tigers in their breeding programs, which has female tigers birthing several cubs each year.
Another one of the most endangered animals is the South China tiger. This feline is said to be the ancestor of all modern-day tigers. The population is so small (60 in captivity) that they are expected to be extinct within a decade. In 1959, there were 4,000 in the wild, but Mao Zedong declared them “pests” and ran campaigns to exterminate them until 200 were left in 1982. No wild South China tigers have been spotted in over 25 years, so they are now considered “functionally extinct,” save for a few scattered tigers in zoos around the world. Since then, the Chinese government has pledged to help conserve them in zoos and on preserves.
“It’s sad to see in my lifetime the loss of so many species. It’s like watching the end of the world in slow motion,” said Donna Fernandes, president of the Buffalo Zoo. In Buffalo, NY there are captive breeding and resettlement programs for 28 endangered species, including the snow leopard, Indian rhino, Siberian tiger, Puerto Rican Crested Toad and Golden Lion Tamarin. “I sometimes wish I could time travel back 200 years ago, and see the world the way it was,” she sighs, referring to the numerous endangered animals who have already met their end — including the Vancouver Island wolverine, the Columbia Basin pygmy rabbit, the Dusky Seaside sparrow and the Bay Spring salamander, which have gone extinct since 1960. Fernandes adds, “I’m hoping people will realize there is hope if they take an active role in changing their behavior, and in supporting organizations trying to halt extinction.”
Jeremy Larson is a foremost expert in acid reflux remedy field. His work has been extensively published in various online publications in this area. For more information on the treatment, visit RemedyForAcidReflux.com.
Sustainable Building
The efficient use of resources represents the fundamental principle behind the concept of sustainable building. Following the green criterion, the construction, the sitting, the design and the maintenance of a building have a limited impact on the environment. Sustainable building construction further needs to rely on high quality work standards that enable the elimination of the polluting waste and toxic agents as well as the efficient use of the resources. At a small scale, sustainable building is known in the form of natural building.
The use of natural materials means that the building is designed and constructed with local resources. The resulting efficiency in the processes becomes obvious by analyzing the benefits of sustainable building solutions. The operating costs are a lot lower because the energy and the water consume is more effective. There is a considerable impact on the indoor air quality too, meaning that the chances to develop mold for instance are lower. Enthusiasts of sustainable building also try to create a balance between the architecture or design lines and the surroundings of the structure.
If sustainable building practices become more extended, a serious reduction of the environmental impact of business can result from it. Both in Europe and the United States, homes are the largest energy consumers. It is with buildings that the highest levels of carbon dioxide are also generated, and pollution levels become critical. Sustainable building may thus provide a solution for the negative impact on the environment that results from massive home constructions.
Rain gardens and solar panels are just two solutions available with sustainable building. Sun light and rain are both natural free resources that allow users to make considerable savings. Why use tap water for the garden when there are special collecting systems that capture rain water? Even the materials used for sustainable building are environmentally friendly, and here we refer either to wood from sustainable managed forests or to ecology blocks. Recycled materials such as wood fibers, calcium sand stone, compressed earth blocks, foundry sand and even demolition debris could also turn into useful resources for sustainable building.
Repairing Of Aluminum Storm Windows
Do you want to do an aluminium storm window repair? Well here is a short but useful article that will provide a review and a step-by-step guide to how you can go about doing this.
Some of the topics I have previously written about on this series include: window replacement tax credit 2009, what’s the best replacement window and window replacement companies and today I will expand on this briefly.
There are lots of ways in which you carry out an aluminium storm window repair. I will provide you with what has worked for me and others. I have talked but of course you can get differing advice from other experts. I recommend you read the article to the end before making any decision.
The reason why I point out the differing opinions is because I know that not all windows get damaged in the same manner hence not all the repairing data will be standard. For example some may have damaged glazing, scratches or cracks and others may have problems with the sash, which causes them to have some sliding problems.
Here are some few steps you can consider for your aluminium storm window repair.
they might be scratched, cracked or do they have broken glazing? In this case for you to fix the aluminium storm windows you might have to remove the storm sash or the screen. Then remove the glazing, which is usually glass or acrylic plastic.
You may find that the corners are secured by metal keys in this case you might have to remove the screws to take out some of the corners – one or maybe two. If you find that they are crimped then an awl can be used to extract the vinyl splints that are used to secure the glazing.
Once you have done all that you can then install the new glazing (2mm). Just confirm that you make it smaller than the interior frame measurement in order to enable some contraction and expansion. Just lay the glazing vinyl on the glass and then press it into the frame. Then assemble the corers. when you are dealing with crimps frames simply lay the glass in the frame and just press the vinyl weather seal so that it locks in to the joint between the frame and glass.
How To Grow Green
A more sustainable lifestyle is indeed close within reach because anyone in search of solutions for how to go green will find awesome tech tips and very intelligent household suggestions to develop a new lifestyle. The grounds of any earth friendly initiative is the reduce, reuse and recycle effort. You don’t have to be a tree-hugger in order to help reduce pollution, prevent waste, enjoy better health and make savings.
How to go green? Well, it all comes down to the way you perceive things. You can start by being introspective, carefully observing your daily routines, the lifestyle peculiarities and the purchases you make You can even keep a closer track by using some ‘green journal’ for a week, and then come to a conclusion. From the foods you choose, the clothes you wear, the electronics you use to the car you drive, all express your attitude towards the environment.
Even if you haven’t so far looked for suggestions on how to go green, there may be things in your life that correspond to the eco trend. If you are biking, recycling, using energy-saving bulbs and eating organic food, then you are definitely on the right path. Here are some suggestions in case you still need help. Stop wasting food. It is better to buy less than to throw food away. Analyze your non-essential purchases and see how you can reduce them. Save the paper of magazines, books and newspapers that you can read in digital format. Don’t make multiple shopping errands by car. Do the shopping once, getting everything your need. Keep an eye on vintage products, they make good alternative to new and expensive stuff. Try to reuse household items as best as you can.
These are just a few general tips that may show you how to go green, but the truth is that more comprehensive information is available for more specialized fields. For instance, you can find everything you need on saving energy, alternative energy sources and the best ways to save fuel and electricity. Or read more about recycling solutions. As long as you feel that green living standards are the thing to do, then, changes are possible.