The commercialization prospects for fuel cell vehicles depend not only on their performance and cost, but also on how well they can compete with other technology options that address similar market and policy needs. While market forces have not traditionally motivated design change for reasons of environmental performance, customer values and expectations can evolve and such characteristics could grow in importance. However, inherent market conservatism will favor less disruptive ways to address evolving needs, which might be met by improved gasoline and diesel vehicles, including hybrid-electric versions. Yet looking over the long run, particularly the need to substantially reducing greenhouse gas emissions, hydrogen fuel cells may well provide a solution that is superior to other alternatives. (more…)
As a reaction to these historical perspectives, the building industry has witnessed a certain rise in design responses to regional climatic conditions, as part of a powerful efficiency and energy conservation push since the 1970s. More recently, the zero green house gas emsission and office building has become a design concept as part of strategies to introduce urban renewable energy as an increasing contributor to managing urban energy supplies. (more…)
Magnetic generator motor supplies green and renewable energy. The energy created is very environmentally friendly and healthier for us and our next generations. You can also build a magnetic generator motor that can be set in motion deliver enough energy to power your home with these simple few steps. (more…)
Climate change caused by the enhanced greenhouse effect is one of the most significant global environmental issues. Increased emissions of GHG to the atmosphere, most notably CO2 , are considered the main cause of global climate change. Increasing energy consumption, a reliance on fossil fuels to meet these needs, and deforestation related to land use change are the main sources of increasing atmospheric CO2. (more…)
In the mid-1880s, Charles Fritts built the first solar cell formed by selenium coated with a thin layer of gold and with an energy efficiency of 1%. However, it was not until 1954 that Bell Labs discovered accidentally that would be the first commercial solar cell, with silicon as the base. (more…)
Many home owners want to use brick veneer exterior walls for their houses. The brick is usually the automatic choice for outdoor decorating because of their rarity, beauty and durability advantages over other buildings materials.
Brick was considered as a coating material and beautify the exterior walls, because they are rugged, durable and comfortable to hold and pleasing to the eye. The wall panels are made of bricks that will not fade, are durable and made timeless, even in adverse weather conditions and the environment. For this reason, it is preferable that the insulation methods for exterior walls and the house to protect against damage caused by different weather conditions that caused a negative tendency on the outer walls of the houses.
It must be made arrangements to clear some brick walls, founded as they are porous by nature, to protect against the effects of moisture during the rainy season or cold, summer or winter.
It is common in wall construction paper, wooden frame, where a combination of mixed cement, sand, lime and water and used the stones to be fixed.
It is nearly impossible for a do-it-yourselfer to insulate vapor barriers a finished exterior wall without tearing off the wallboards. Competent professionals can do this work for you. However, there are some sharp, fly-by-night operators in this industry, and you should exercise extreme caution before you hire someone to blow defective insulation into your finished walls. (more…)
So-called thin-film photovoltaic devices are usually based on mixtures of elements other than silicon — most notably copper indium gallium selenide (CIGS) — applied in a thin layer to plastic, even organic, components. Using nanotechnology and advanced materials science, thin film is able to produce power with a fraction of the materials. Similar techniques are being tried using ultra thin layers of silicon on a glass substrate, reducing what is now a 250 - micrometer (um) - thick wafer to less than 20 um. (more…)
The hydrogen can come from various sources including fossil fuels, wind, solar, biomass, nuclear, solar thermo-chemical reactions, and solar photolysis. (more…)
When many people first think about building a green home, it is the materials and products that come to mind: insulation made from recycled newspaper and decking made from recycled plastic, for example. Product selection is an important part of green building, but it is generally not as important as energy performance or where the house is built (to minimize automobile use and protect natural areas), or measures to ensure a healthy indoor environment. (more…)
Residential Solar power systems are probably the safest, cleanest alternative for home energy consumption. Solar energy is renewable and never gets depleted as it taps on the UV wavelengths of sunlight. The process of capturing and converting the UV wavelengths into energy does not emit by products into the ozone and hence is an extremely eco friendly approach to generating energy. (more…)
