Archive for the ‘Energy’ tag

Sources of Alternative Energy – Including Resources, Forms, Stocks and Investment

The Ocean, Nuclear and Solar Power are forms of alternative energy which can be developed.

Ocean Thermal Energy Conversion (OTEC) is a potential alternative energy source that needs to be funded and explored much more than it presently is.

There are three kinds; closed, open and hybrid cycle of OTEC.

?Closed Cycle? uses a low-boiling point liquid such as, for example, propane to act as an intermediate fluid. The OTEC plant pumps the warm sea water into the reaction chamber and boils the intermediate fluid. This results in the intermediate fluid’s vapor pushing the turbine of the engine, which thus generates electricity. The vapor is then cooled down by putting in cold sea water.

?Open Cycle?. The sea water itself is the driver of the turbine engine in this OTEC format. Warm sea water found on the surface of the ocean is turned into a low-pressure vapor under the constraint of a vacuum. The low-pressure vapor is released in a focused area and it has the power to drive the turbine. To cool down the vapor and create desalinated water for human consumption, the deeper ocean’s cold waters are added to the vapor after it has generated sufficient electricity.

?Hybrid Cycle? There are actually two sub-theories to the theory of Hybrid Cycling. The first involves using a closed cycling to generate electricity. This electricity is in turn used to create the vacuum environment needed for open cycling. The second component is the integration of two open cyclings such that twice the amount of desalinated, potable water is created that with just one open cycle.

Developing Nuclear Power as Alternative Energy

Nuclear power plants are very ?clean-burning? and their efficiency is rather staggering. Nuclear power is generated at 80% efficiency, meaning that the energy produced by the fission reactions is almost equal to the energy put into producing the fission reactions in the first place. There is not a lot of waste material generated by nuclear fission?although, due to the fact that there is no such thing as creating energy without also creating some measure of waste, there is some. The concerns of people such as environmentalists with regards to using nuclear power as an alternative energy source center around this waste, which is radioactive gases which have to be contained.

Solar Energy Collecting as an Alternative Energy Source

Solar powered electricity generation is certainly good for the environment, as this alternative form of producing energy gives off absolutely zero emissions into the atmosphere and is merely utilizing one of the most naturally occurring of all things as its driver. Solar collection cells are becoming slowly but surely ever more practical for placing upon the rooftops of people’s homes, and they are not a difficult system to use for heating one’s home, creating hot water, or producing electricity. In the case of using the photovoltaic cells for hot water generation, the system works by having the water encased in the cells, where it is heated and then sent through your pipes.

Do It Yourself Energy Efficiency Projects: Your Home’s Thermal Envelope (Part 1)

Many people struggling through the tough economy are not going to be able to take advantage of the 2009-10 Energy Efficiency Tax Credit simply because they can?t afford new windows and doors, water heaters, or more insulation. However, there are a few things you can do around your home to air seal it to save money during the winter months and during the summer. Because of the price and use of energy, architects and builders now design a home to be a ?thermal envelope?. That is the sum total of the home?s insulation systems including walls, ceilings, foundation, floors, windows, and doors. These work more effectively with good, tight fits that seal out the weather and air. By having a tight seal on your home?s thermal envelope, the less energy you waste or lose by exchanging it too often with the air outside. So, with this in mind, let?s start at ground level and work our way up to seal your house. Moisture Barrier A moisture barrier (usually plastic sheeting) covers the earth beneath a structure to prevent moisture from infiltrating the structure from the ground. All-wooden structures last years longer if they are kept dry and out of contact with the ground. For a house, not only does it help prevent rot but it also helps keep the drier. Because moisture in the air holds heat, even during the most humid months, a moisture barrier will make your Texas home feel drier and cooler. Most Texas homes are built on either a slab or have crawl spaces under them. Houses with slab foundations typically have concrete poured on top of a plastic moisture barrier. This limits the infiltration of moisture into the thermal envelope of the house. Homes with crawl spaces, meanwhile, feature a moisture barrier in their crawl spaces. Some older homes do not have one and these can be installed by the home owner very easily. A moisture barrier is plastic sheeting, usually about 6-8 mils thick and is available at any hardware store, typically in sizes ranging from 25 ? 25 feet to 100 ? 100 feet. It also need not be one single piece of plastic. As long as the sheets overlap each other by about 6 inches or so, it will be effective. To install, you will need to know the dimensions of your crawl space and buy enough plastic sheeting to cover the ground in that space. Simply cut the plastic sheeting to cover the earth from wall to wall, laying it flat. You can use either black or clear plastic, but I would use clear because black plastic would make your crawl space feel like a cramped version of Batman?s lair. You should notice the difference within 24 hours. If your house feels too dry, simply fold back some of the plastic sheeting to expose the earth underneath. Continue adjusting until your home feels the most comfortable to you. As mentioned, moisture barriers limit the infiltration of moisture into the thermal envelope of the house. The house feels drier: It will be easier to cool in the summer and less likely to develop mold or contribute to wood rot in the winter. Mudsill and Rim Joists The next place to check out is the mudsill. The mudsill is the board that is bolted flat on to the top of the foundation wall. An example of one is a 2?8 board bolted onto the final course of cement blocks. It provides a bed to attach the flooring joists and banding boards for the first floor of the house. Depending on how well it is installed, it can let in a lot of cold air and moisture. Places to look for gaps is where the mudsill is fastened to the foundation. A common building practice now is to put down a plastic foam gasket over the foundation before attaching the pressure treated lumber that will be the mudsill. In older homes, either a paper-backed cellulose material was put down or nothing was used. To find gaps, get as close as possible to the mudsill from the inside and look for daylight shining through between the mudsill and the foundation wall and feel for a draft of cool air. If your foundation is made of cement blocks, look for the vertical joints between the blocks. When these blocks are put into place, the mortar between the blocks often slumps leaving thin mortar or none at all. Over time as the house settles, holes can appear. While these might be small holes that let through tiny amounts of air, if your home has 10 or 20 of them, you?re letting in a lot of weather and insects. Seal every hole you find with silicon caulk or expanding foam. Another place along the mudsill to look for is where the rim joists attach. The rim joist (sometimes called ?banding joist?) is the piece of wood that closes off the end of the flooring joist or is the last floor joist underneath the exterior wall. The bottom edge is not necessarily an air-tight seal. In fact, I lived in one older house where there was a half-inch gap between the rim joist and mudsill. Now, while this seems small, the gap ran for the entire length of the house: 25 feet. It was the equivalent of leaving a 24 inch by 24 inch window open all the time. Some expandable foam quickly sealed this gap and there was a noticeable improvement in comfort and cost right away. Windows If you have double-hung wooden sash windows with storm windows that are drafty, there are several ways to make them more energy efficient. Make sure the glazing on the glass panes of the sash windows is not cracked or crumbling. The glazing helps hold and seal the glass to the wooden window and thus blocks drafts and quiets rattling ? especially from traffic. It also lessens the likelihood that the glass will break if a pet or a child presses against it. Glazing is something of a skilled art. That being said, it?s not that hard to do. Re-glazing a window yourself can save you $50 to $100 or more. All you need is glazing putty ($5), a putty knife ($2), some glaziers? points ($2 for a box of 100) and some time. First, remove any old, cracked, or crumbling glazing with a putty knife. Glazing putty dries to be very, very hard and will last decades. It can be loosened with a heat gun, but keep the gun moving or the heat will crack the glass. When the old putty has been removed, remove all the old glaziers? points. Now, lift out the pane and set it aside. Sand the channel where the pane fits on the wooden sash. Usually, I apply a thin bead of silicone caulk in this channel before replacing the glass. This helps to seat and seal the glass pane. This especially helps when working on multiple small panes (called ?lights?) separated by thin or fragile wooden mullions (also called ?muntins?). Next, insert new glaziers points. This is done by using the putty knife to press points into the wooden sash along the glass pane to keep it in place. Take your time so that you don?t break the glass. Glazing putty can be purchased in either a can or a tube with a shaped tip that fits in a caulking gun. However, it does take some practice to get just the right angle and right amount of putty on the glass. When using the tube mix, keep the 45 degree angled tip steadily against the glass and lay a bead of putty the length of bottom of the pane. If you?re using the putty from the can, roll the putty into long snake (or rope) and place it along the edge of the pane and along the wood. Gently press it into position so that it forms a nice 45 degree angle with the putty knife. The putty is shaped this way so that water runs off the glass to the edge of the window sash instead of into the window pane channel where it can rot the wood. The next thing to look for is if your windows close snugly. Both the top and bottom window have what is called a ?meeting rail?. On the upper window, it is the bottom of the window and on the bottom window it is the top. These meeting rails are shaped so that they mesh together when they close. This helps seat and seal the window properly. Check to see if the bottom window runs firmly ? but not tightly ? along the window jamb as you close the window. If it?s too loose and wiggles back and forth, it probably won?t seat very tightly when it?s closed. You can use a putty knife to pry out the window jambs and then re-position them to improve how tightly the window will close. You might try adding felt or self-adhesive foam weather stripping. Also make sure you clean out any debris from the window to ensure the window will seat and seal snugly. As metal storm windows age, the harder they seem to close. This usually happens because of dirt and corrosion. Make sure the window tracks are clean and free of dirt and debris so the window runs smoothly. Outside, check that the storm window frame is held tightly in place against the wooden window frame. Screws that hold this frame in place might be loose and might need to be replaced or moved to a new spot. Most drafts from storms windows come from where the storm window frame meets the wooden window frame. Once you?re certain the storm window frame is secure, lay a bead of caulk into the seam where the metal storm window frame meets the wooden window frame. Typically, there are two slots cut into the bottom apron of the storm window frame. Do not seal these. These are weep holes that allow condensation to escape. If you have modern, double glazed windows (windows with two panes of glass), one of the things to look out for is fogging between the panes. Double glazed windows are made by attaching a pane of glass with adhesive to either side of a half-inch wide aluminum frame either in a vacuum or a very dry environment. It is then a single unit and is installed into a standardized window frame. Fogging is a sign that the seal on the window unit has failed and water vapor has penetrated into the space between the panes. If the fogging is still present in summer, it?s a good guess that acids have also leeched in with the water vapor and have permanently etched the window glass. If the fogging disappears when the window warms, then it?s not too late to treat it. Examine the wood of the window for any discoloration from moisture. Look for peeling, flaking paint or soft, gray-colored wood. If you find some, sand it smooth and then seal it with an oil-based enamel or polyurethane. If the wood is very soft, you might try using an epoxy formulated to penetrate and preserve rotten wood. Be sure to mask the glass first with painter?s tape. A builder installs a door or window with wedges called shims so that the window can float inside a rough opening in the framing. While this lets the door or window open and close freely as it expands and contracts during the year, it also means a lot of outside air can infiltrate your house by getting in around the window frame if it has not been insulated or if it has been damaged. During the summer, it usually isn?t a noticeable problem. During the winter, though, if you see moisture or mildew there could be a problem with the window frame. Look outside for damage to the siding and window frame. Look for holes or wet, rotten wood, or even a loose piece of siding. It?s important to clean and seal problems like these quickly, especially if moisture has been getting inside your wall, because the damage will just worsen over time. Rotten or damaged siding can be replaced easily with new pieces from the hardware store. Rotten or damaged window sills should be completely removed and replaced and the inside of the wall inspected for mold, rot, and other damage. However, this is no small job and requires time and skills to complete. It might need the hand of a professional. For an immediate, short-term fix, clean out the rotten wood as best you can and fill the hole with fiberglass auto body putty. This will provide a hard, waterproof barrier against the weather. Be sure to contour and shape it so that it will not interfere with opening and closing the window. If moisture or rain is getting into your window frame, check to see if any of your rain gutters run over head. Check to see if these are clogged. Also, consider installing drip edging along the top of your windows to help run water around and away from the windows and siding when it rains. After you?ve installed it, be sure to caulk it in place so moisture can?t penetrate behind it. A lot of folks consider it hideous to put over your windows but it will keep the wind out: clear plastic sheeting. This is probably the easiest temporary energy fix owners of older homes use to keep cold, damp winter weather out. There are two approaches: Apply the clear plastic sheeting to the outside of the window by stapling it to the wood window frame and then nailing lathe over the stapled edge to secure the plastic. Or apply the plastic sheeting to double-sided tape on the inside of the window frame (usually available in kits from the home center). To be sure, neither is an attractive solution. However, if you have an older home with double-hung windows in poor condition, this short-term fix does a lot for only $10 and about 15 minutes of work. In fact, even if your windows close snugly, it might not be a bad idea for a north-facing window that doesn?t have much of a view. Energy Efficient Window Treatments: ?It?s Curtains for You!? Curtains not only add style, color, and privacy to a room, they also act as an insulating blanket for one of the most thermally conductive parts of the house: the windows. Curtains are even more effective at sealing off a window when they have thermal backing. Thermal backing is usually foam because foam permits water vapor to move through the fabric rather than condensing on the cold side toward the window and causing moisture problems. An additional benefit to thermal curtains is that they help deaden noise from outside that is normally transmitted into the room by the window glass. In the summer, the curtains also block hot sun. Thermal curtains can be made even more efficient by adding a valance with a top. Usually, window valances conceal the curtain hardware such as the rods and brackets. However, if the valance has a top cover, warm air that would normally circulate down between the cool glass and the back of the curtain is blocked. Valances can be made with plywood and then stained, painted, or covered in fabric. Another option is a window quilt. These are blanket-like shade that roll down to cover the window. Some are held tightly in place by magnetic strips attached to both the quilt and the window frame. Finally, one last accessory for the double hung window is the Window Worm. This is a fabric tube about 2 1/2 to 3 inches in diameter and is as long as a window is wide. It is stuffed with quilting foam or cloth scraps and laid along where the top and bottom window sashes meet to help keep out drafts. Longer ones weighted with sand can also be made and placed across the foot of doors.

Using Geothermal Energy

We should be doing everything possible to develop geothermal energy technologies. This is a largely untapped area of tremendous alternative energy potential, as it simply taps the energy being naturally produced by the Earth herself. Vast amounts of power are present below the surface crust on which we move and have our being. All we need do is tap into it and harness it. At the Earths’ core, the temperature is 60 times greater than that of water being boiled. The tremendous heat creates pressures that exert themselves only a couple of miles below us, and these pressures contain huge amounts of energy. Superheated fluids in the form of magma, which we see the power and energy of whenever there is a volcanic eruption, await our tapping. These fluids also trickle to the surface as steam and emerge from vents. We can create our own vents, and we can create out own containment chambers for the magma and convert all of this energy into electricity to light and heat our homes. In the creation of a geothermal power plant, a well would be dug where there is a good source of magma or heated fluid. Piping would be fitted down into the source, and the fluids forced to the surface to produce the needed steam. The steam would turn a turbine engine, which would generate the electricity. There are criticisms of geothermal energy tapping which prevent its being implemented on the large scale which it should be. Critics say that study and research to find a resourceful area is too costly and takes up too much time. Then there is more great expense needed to build a geothermal power plant, and there is no promise of the plant turning a profit. Some geothermal sites, once tapped, might be found to not produce a large enough amount of steam for the power plant to be viable or reliable. And we hear from the environmentalists who worry that bringing up magma can bring up potentially harmful materials along with it. However, the great benefits of geothermal energy would subsume these criticisms if only we would explore it more. The fact that geothermal energy is merely the energy of the Earth herself means it does not produce any pollutants. Geothermal energy is extremely efficient-the efforts needed to channel it are minimal after a site is found and a plant is set up. Geothermal plants, furthermore, do not need to be as large as electrical plants, giant dams, or atomic energy facilities-the environment would thus be less disrupted. And, needless to say, it is an alternative form of energy-using it would mean we become that much less dependent on oil and coal. Perhaps most importantly of all-we are never, ever going to run out of geothermal energy, and it is not a commodity that would continuously become more expensive in terms of real dollars as time passes, since it is ubiquitous. Geothermal energy would be, in the end, very cheap, after investigation and power plant building costs are recouped.

4 Reliable Suppliers Of Alternative Energy

1. Amelot Holdings is a US based company specializing in development of ethanol and biodiesel plants. It establishes relationships between the researchers and suppliers of alternative energy. The company facilitates joint ventures and mergers between the research facilities and the manufacturers of alternative energy. Thus, there is exchange of information and technology which helps to promote the growth of the alternative energy industry.
2. Environmental Power is another alternative energy supplier. It has two subsidiaries namely Microgy and Buzzard Power. Microgy undertakes research and development in the field of alternative energy. It has developed a cost-effective biogas facility by making use of agricultural and plant waste. It focuses on eco-friendly production of renewable energy like biogas to compare with the standards of natural gas. The biogas is used in combustion engines, and for heating homes and offices. Buzzard Power has an 83MW power facility to generate ‘green’ energy from coal waste.
Environmental Power has been in existence from the year 1982 and has a long history of development in the field of clean energy. The company has developed and operated municipal waste projects and hydroelectric plants and assisted in clean gas generation and energy recovery. It has a team of experts from the agriculture and finance sectors to manage the business and help its growth and expansion.
3. Intrepid Technology and Resources Incorporated (ITR) processes animal waste into natural gas as an alternative energy resource. America’s supply of natural gas is depleting. ITR believes that the two billion ton animal waste produced every year can be used to generate natural gas to tide over the deficit. Their ‘organic waste digesters’ built close to the sites of the organic waste, produce clean methane gas which is a viable option to natural gas. The company is based in Idaho but plans to expand its operations to the whole country.
4. Nathaniel Energy generates energy from waste matter. The company has devised s system known as Total Value Preservation System (TVPS) which sees the potential of waste materials to generate energy. Industrial waste matter which would have otherwise been discarded or destroyed is being put to optimum use to recover the trapped energy. The production costs towards generation of alternative energy are equivalent to the costs incurred by a company to install pollution control systems and preventions. TVPS is an innovative technology which recovers valuable resources that other processes fail to do.
There are many companies such as those listed above, which use innovative technology to augment our diminishing supply of natural resources by adopting environmentally safe methods to generate alternative energy or renewable energy. There is a need to invest in research towards finding alternative sources of energy as a replacement to fossil fuels. The future of the world depends on industries which can help to achieve this goal. The governments of the various countries need to co-operate in terms of exchange of ideas and information to solve the problems of global warming and environmental pollution. Alternative energy suppliers like the above mentioned companies can play a major role in this process and the government can promote these companies by providing them subsidies.

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