Wind power in the United States is a growing industry. As of January 2007 the United States wind power capacity exceeded 11,600 MW which is enough to serve three million average households.
The largest wind farms operating in the U.S. are: Horse Hollow Wind Energy Center, TX (736 MW), FPL Energy; Maple Ridge Wind Farm, [...]
Solar photovolaics (PV) have undergone a remarkable evolution, really a transformation, since the beginning of the industry in the 1960s. Initially solar was so expensive — well over $100 per kilowatt hour — that only super-high value or remote applications, such as satellite and spacecraft missions, could be justified.
Following the OPEC embargoes of the [...]
Geothermal energy is energy obtained by tapping the heat of the earth itself, usually from kilometers deep into the Earth’s crust. It is expensive to build a power station but operating costs are low resulting in low energy costs for suitable sites. Ultimately, this energy derives from radioactive decay of elements like uranium and thorium [...]
The definition of biofuel is liquid or gas transportation fuel derived from biomass.
Plants use photosynthesis to grow and produce biomass. Also known as biomatter, biomass can be used directly as fuel or to produce liquid biofuel. Agriculturally produced biomass fuels, such as biodiesel, ethanol and bagasse (often a by-product of sugar cane cultivation) can [...]
Solar Energy is nothing but Solar Power collected from SUN LIGHT (The only source of energy for every living creature of the world)
Solar energy can be applied in many ways, including to:
1. Generate electricity using photovoltaic solar cells.
2.Generate electricity using concentrated solar power.
List of solar thermal power stations
3.Generate electricity by heating trapped air which [...]
Water power can be simple called as Hydropower.
Energy in water (in the form of motive energy or temperature differences) can be harnessed and used. Since water is about 800 times denser than air, even a slow flowing stream of water, or moderate sea swell, can yield considerable amounts of energy.
There are many forms [...]
Wind power is the conversion of wind energy into more useful forms, such as electricity, using wind turbines. At the end of 2006, worldwide capacity of wind-powered generators was 74,223 megawatts; although it currently produces just over 1% of world-wide electricity use, it accounts for approximately 20% of electricity use in Denmark, 9% in Spain, [...]
Final Thoughts on Choosing Radiant Heat
It’s hard to express doubts about something that’s really popular. Like ground-source heat pumps, radiant-floor heating has a loyal and zealous following of builders, designers, and homeowners who consider it to be the best heating option around—and appropriate in almost any situation.
One of the reasons radiant-floor heating is so popular [...]
So What’s Wrong with Radiant-Floor Heating?
In the right application, radiant-floor heating is a superb heat-delivery system—in fact, perhaps the very best. You usually pay more for it, but the enhanced comfort, potential energy savings, and other benefits can easily justify the extra cost. That said, however, super-energy-efficient green buildings may not be as well-suited to [...]
Many people who opt for radiant-floor heating do so because they don’t like forced-air heat. There is a common perception that forced-air heating systems dry out air and generate dust. “Nothing could be farther from the truth with a properly installed forced-air system,†says Betsy Pettit, AIA, of Building Science Corporation in Westford, Massachusetts. Forced-air [...]
Renewable energy utilizes natural resources such as sunlight, wind, tides and geothermal heat, which are naturally replenished. Renewable energy technologies range from solar power, wind power, and hydroelectricity to biomass and biofuels for transportation. About 13 percent of primary energy comes from renewables, with most of this coming from traditional biomass like wood-burning. Hydropower is [...]
During judging of the Northeast Green Building Design Competition last spring, I was struck by the number of residential entries with really stellar passive solar design and super-high-performance building envelopes. Clearly, I thought as I began reviewing the features, we’ve come a long way in high-performance residential green building since my first experience with passive [...]
What’s the most common mistake people make in trying to save energy around the house?
Common mistakes people make include:
1.letting the furnace or air conditioner salesperson sell them a unit that’s much bigger than they need,
2.not getting the ducts checked for leakage when installing a new heating and cooling system,
3thinking that “since heat rises, we [...]
Older radiant floor systems used either copper or steel tubing embedded in the concrete floors. Unless the builder coated the tubing with a protective compound, a chemical reaction between the metal and the concrete often led to corrosion of the tubing, and to eventual leaks. Major manufacturers of hydronic radiant floor systems now use cross-linked [...]
Although ceramic tile is the most common floor covering for radiant floor heating, almost any floor covering can be used. However, some perform better than others. Common floor coverings like vinyl and linoleum sheet goods, carpeting, wood or bare concrete is often specified. However, it is wise to always remember that anything that can insulate [...]
The modern human community is depended greatly on the use of focil fuel like coal oil, gas and Nuclear fission. as sources of energy. But these sources of energy firstly polluting our the environment very fast secondly they are getting extinct and ultimately our existance in this universe is shortened.
Energy is the ability to do [...]
Efficient Oil-fired furnaces make your home more comfortable. Some models are less prone to causing indoor air quality problems or house fires.
Efficient Oil-fired furnaces may provide the following benefits in addition to reducing your energy bills.
Improved Comfort. Efficient furnaces provide greater comfort because they cycle on and off less often, and have improved controls [...]
There are three types of radiant heat: radiant air floors (air is the heat-carrying medium); electric radiant heat floors; and hot water (hydronic) radiant heat. All three types can be further subdivided by the type of installation: those that make use of the large thermal mass of a concrete slab floor or lightweight concrete over [...]
LONDON: The European Commission has given approval to an EU nuclear fusion project that aims at providing a limitless and clean source of energy to end reliance on fossil fuels that aid global warming.
The consortium, led by Mike Dunne of the Rutherford Appleton Laboratory in Oxford, UK, hopes to develop commercial nuclear fusion using [...]
Efficient LPG-fired water heaters may hold their temperature longer following power interruptions and operate more safely.
Many efficient water heaters are better insulated and will cool off more slowly if the heating elements are unable to operate. (Since they rely on electronic ignitions, even gas-fired water heaters are vulnerable to power interruptions.)
One type of [...]
Work-arounds. While the Home Energy Saver is the most comprehensive home energy model available on the web, there are inevitably specific systems or features that we have not yet explicitly incorporated. In some cases, there are reasonable work-arounds that the user can use to approximate the energy use of such features or systems.
Upgrade Me! We [...]
Efficient LPG-fired furnaces make your home more comfortable. Some models are less prone to causing indoor air quality problems or house fires.
Efficient LPG-fired furnaces may provide the following benefits in addition to reducing your energy bills.
Improved Comfort. Efficient furnaces provide greater comfort because they cycle on and off less often, and have improved controls [...]
WASHINGTON: Tropical rainfall is on the rise, NASA scientists have said.
Using a 27-year-long global record of rainfall assembled by the international scientific community from satellite and ground-based instruments, the scientists found that the rainiest years in the tropics between 1979 and 2005 were mainly since 2001.
The rainiest year was 2005, followed by 2004, 1998, 2003 [...]
Types of Tubing
Older radiant floor systems used either copper or steel tubing embedded in the concrete floors. Unless the builder coated the tubing with a protective compound, a chemical reaction between the metal and the concrete often led to corrosion of the tubing, and to eventual leaks. Major manufacturers of hydronic radiant floor systems now [...]
Floor Coverings for Radiant Heat
Although ceramic tile is the most common floor covering for radiant floor heating, almost any floor covering can be used. However, some perform better than others. Common floor coverings like vinyl and linoleum sheet goods, carpeting, wood or bare concrete is often specified. However, it is wise to always remember that [...]
Radiant Floor Heat has its advantages:
Homeowners can save money by purchasing and maintaining an energy-efficient heating and cooling system.Most people who own radiant floor heating feel that the most important advantages are comfort and quiet operation. Radiant floor systems allow even heating throughout the whole floor, not just in localized spots as with wood stoves, [...]
Types of Radiant Floor Heating:
There are three types of radiant floor heat: radiant air floors (air is the heat carrying medium); electric radiant floors; and hot water (hydronic) radiant floors. All three types can be further subdivided by the type of installation: those that make use of the large thermal mass of a concrete slab [...]
Controlling the System
A radiant floor that uses a concrete slab takes many hours to heat up if it is allowed to become cold. This can be very inconvenient while waiting for the slab heat up so it can heat the space. Because of this, most radiant floor systems are not permitted to go into a [...]
Radiant floor tubing can also be used to cool a house, but presently it is only appropriate for dry climates. The floor temperature is held at 68o F (20o C) by using either a small cooling machine (chiller) connected to the floor tubing or the steady 55o F (13 o C) temperature of the ground [...]
A cooling Tower is nothing but a machine which cools hot water by the method of evaporation( turning the water to vapor).Water always evaporates till the surrounding air is not 100% moist.Now, for evaporation the amount of latent heat it needs is taken out from water itself and it gets cooled.
The [...]