Archive for the ‘engine’ category

Biofuel Technology – The Cost of Alternative Energy

August 9th, 2011

Certainly consumers are concerned with escalating fuel prices as well as what fossil fuels are doing to the environment. The concern has led many consumers to find out more about alternative energy sources in the way of solar power, wind power and biofuel technology. However, are these technologies new? Certainly not – although now that energy is such a concern the technologies relative to biofuels, wind and solar can no longer be put on the back shelf. That said, this technology is a very old alternative energy solution. The costs of biofuel technology have to be looked at before solutions can be found.

The creation of a biofuel is not some sort of complex science. In order to create a biofuel the following needs to occur. First you will need to take some form of grain or vegetable and thoroughly grind it up. The grain or vegetable is then mixed with water. The grain or vegetable and water is then cooked for a very short length of time. During this short period of cooking time an enzyme is added to the mixture in order that the starch may be subsequently convert to sugar. The cooking process just described is referred to as Hydrolysis.

You next add some yeast. The yeast is necessary in order that the mixture can ferment. The fermentation of the mixture results in the production of Ethanol. A distillation process is applied in order to separate the Ethanol from the other ingredients. You may not be aware of it, but currently with the concern regarding diminishing fossil fuels and the threat they present to the environment there are a fair amount of websites showing various ways to manufacture the product of Ethanol at home. Even though the steps do not sound all that significant there is truly a great deal of time involved and a good deal of work. Further, some have mentioned it is not all that cost-effective to produce Ethanol at home.

However, on a larger scale a good deal of time and financial resources is being spent currently with respect to manufacturing methods pertinent to biofuels. In example, researchers are looking for ways to produce Ethanol by means that prove less expensive than what is incurred when using grains. This assures food sources are not used too frequently. It is not necessary for part of the population go hungry due to the fact food sources are being used over-extensively in the way of biofuel manufacture. Countries that have been manufacturing biofuels for a relatively long time now grow food products high in sugar content; one example of such a food product is sugar cane. Brazil is one country that grows a considerable amount of sugar cane. Brazil has also been producing biofuels for quite a while now.

It may be said, the majority of Ethanol used commercially is the result of manufacture using the by-product yeast. Ethanol is manufactured as well wherein gasoline is used within the production process. However, the majority of Ethanol produced is the result of using yeast. In manufacturing biofuels corn is considered in areas such as North America where its harvest is generous. However, though corn is generally used in the production of biofuels the process is pricey and the conversion into biofuel a good deal more detailed

The Four Most Disruptive Alternative Energy Technologies

August 3rd, 2011

Greener lifestyles will be driven in part by the actions people choose to take to go green, but also by the development of new technologies. In fact, it may be the new, innovative technologies that provide the largest benefits of going green.

Billions of dollars in investments have been directed into the development alternative energy technologies over the past several years. The rate of innovation is rapid and the level of competition between companies is intense. This is precisely the ideal situation to give birth to novel, disruptive technologies that will have a profound effect on the world for years.

The Boston Consulting Group has published a report in which it attempts to identify the four areas most likely to benefit from disruptive technological developments that cause significant changes in energy efficiency and reduce our dependence on fossil fuels.

What are those four areas?

The first is advanced biofuels, which means fuels beyond ethanol. Ethanol has the main benefit that we can produce it now and it is domestic, which reduces our dependence on imported oil for transportation fuel. But ethanol is a poor fuel relative to gasoline, having only about 60% of the fuel value. Ethanol is also corrosive and absorbs water from the atmosphere, making it incompatible with current pipeline infrastructure. Advanced biofuels will be more gasoline-like and will be produced predominantly from waste products like cellulose and non-food crops like switchgrass, avoiding the crowding out of food crops caused by existing corn-based ethanol.

The second disruptive technology will be wind power. Wind power is already cost competitive in many part of the world at 9-10 cents per kilowatt-hour. However, companies in China are already gearing up to produce wind turbines en masse, which will bring the cost down further. As more transmission lines are added to transport wind generated power to places where it can be consumed, you can expect wind to command a larger share of national energy output.

The third technology identified as disruptive is solar photovoltaic power. Solar panels are already being used in states like California and Arizona, where sun is plentiful. However, costs are still too high by about a factor of two for widespread adoption. As technology continues to improve, expect to see solar panels used more widely to produce electricity.