CXRE » sustainable

Is Gasoline or Battery Power More Efficient?

At first glance, gasoline wastes a lot of energy in the form of exhaust or as wasted heat cooled by the radiator.  In addition, the engine is full of moving parts; fans, pumps and generators all require energy to give them motion.  If you take the sum of all parts, give it a numerical value, and compare it to the total amount of fuel required to move a vehicle from point A to point B, the overall efficiency of gasoline totals about twenty percent.  In other words, only 20 percent of the energy from the fuel is converted into forward momentum or mechanical movement.Batteries Use Less Energy?Conversely, a battery does not use as much energy to cool it because it does not produce as much heat as gasoline. The process of converting battery power into useable force also requires less mechanical work, making it more energy-efficient.  If we apply a numerical value to each component […]

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What is a Fuel Cell?

A Fuel cells are a sustainable energy source.  They generate electricity without polluting the environment with exhaust or noise.  They burn clean so they don’t emit by-products that are a poison to the air and earth. By contrast, fossils fuels waste a lot of the energy they produce rendering them inefficient in the public eye.The American government, in collaboration with some private businesses and academic institutions, are laboring to develop and produce fuel cells because they have the potential to supply power for anything including toys, cars and entire buildings.How does a fuel cell create energy?A fuel cell takes stored chemical energy and converts it into electrical energy from whatever fuel you provide.  Methane or gasoline can be used, but in the pursuit of energy efficiency, hydrogen is the most popular choice.  To fuel a vehicle, the idea is to have a fuel cell that converts hydrogen and oxygen into water and produces electricity in […]

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Get Sustainable and Green with an EPA Purchasing Policy

Several studies have proven that sustainable energy use, water conservation, waste reduction and other efficient practices help the environment and the bottom line.  Green products and practices can bring considerable savings; not only do you save resources that might otherwise be wasted, you also save on utilities (and often because less resources are lost).Generally, deciding that you’ll buy environmentally safe products ends at the decision; sometimes a firmer commitment is needed.  An EPA purchasing policy fulfills that needed commitment, as well as setting out standards for your company.What is an EPA purchasing policy?Also known as a Green purchasing policy, an EPA purchasing policy is a document that lays out what environmentally safe products your company will buy, from sustainable energy products to non-toxic pest controls.  For instance, you may decide to replace conventional paper with recycled paper.  Buying recycled paper from such-and-such a company would go into your policy.Writing an EPA purchasing policyA purchase policy […]

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Organic Fish Found in Texas

The Texas Aquaculture industry is one of the major producers of fresh fish in the country.  Not only are the native seafood varieties produced in a clean aquatic environment free from water pollutants, but they are a big part of the recent economic boost in the U.S.It is estimated that the Texas Aquaculture Association produced about 37 million pounds of seafood, bait fish and aquatic products in 2007; an output worth about 54.8 million American dollars.  This diversified operation includes water gardens, decorative tank fish and filters, stocker tilapia fingerlings, and many other products that are not included in the total pounds of fish weighed and sold.Although the demand for shrimp has declined somewhat, the appetite for domestically bred catfish, striped bass and red drum has increased.  Examining the stock as a whole demonstrates that the overall demand for aquaculture is higher each year and consistently growing.  The projected global demand for aquaculturally raised and […]

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Greener Shopping in Dallas Texas

Dallas, Texas is taking the latest advances in green technology very seriously.  Over the next five years, City Hall intends to grandfather out the use of plastic and paper shopping bags.  Why such a long phase-out?  People are well into the habit of assuming the bag is part of the purchase.  Moving to a bring-your-own-bag forethought is going to be quite a change for most people.When you consider that plastic shopping bags are not solely the by-product of groceries, but also include many other items purchased from stores that sell hardware, clothing, whole foods and medical supplies, it isn’t any wonder why they are found blowing around the environment.Green programs that require the return or exchange of plastic and paper bags are rare in the American culture.  The excess of plastic shopping bags can be found trapping fish and strangling diving birds that go for the plastic-wrapped fish.Part of the Dallas plan to oust plastic […]

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