Showing posts with label Technology. Show all posts
Showing posts with label Technology. Show all posts

Saturday, April 9, 2011

How Do Fuel Cells Work

Fuel Cells are important emerging technologies today and have the potential to successfully replace the currently employed fossil fuels, towards a cleaner, greener, more efficient and more capable source of energy. They have the potential to generate power to run automobiles and hence replace the ubiquitous Internal Combustion engine and also provide for the running of stand-alone and portable power generation units which need mechanical input.

As a principle, Fuel Cells operate just like a battery complete with an anode, a cathode sandwiched between electrolytes along with a catalyst. However, unlike a battery, it does not lose its power and need recharging. As a matter of fact, it produces energy and keeps working until hydrogen is fed to it. It can also b stacked up and the total resulting current can be used to provide for the desired output.

In Operation, Hydrogen is made to pass over one electrode while oxygen is made to pass over the other produced electricity, water and heat in the process.

The Hydrogen gas, after having gone through a successful reform through the fuel-reformer, is fed to the "anode" of the fuel cell, while the oxygen enters through the cathode of the same apparatus. Due to the chemical reaction of the catalyst in the electrolyte, the hydrogen splits into an electron and a proton, both of which travel in different paths to the cathode. While the proton passes through the electrolyte, the electron and a bunch of more of its like pass together, forming an electric current in the process are tapped into for commercial use.

Friday, April 8, 2011

Hybrid Car

The issue of energy lately become a hot topic of conversation in society, especially the condensation of gas leakage due to excessive heat at the Fukushima nuclear reactors - Japan further exacerbate the problem of energy. Imagine the reduction in petroleum reserves in the bowels of the earth will have an impact on the prolonged energy crisis, which means that there will be paralysis of all sectors of human life. During the tens and even hundreds of years humans as one of the biggest users of energy in the world is to exploit the sources of these fossil fuels without knowing when the oil reserves in the bowels of the earth will continue to supply, but it also exacerbates the impact of air pollution due to combustion gases (emissions) vehicle engine, for it is necessary may we think of new or renewable energy sources.

The challenge for environmentally friendly vehicles with minimum emission levels even without the emissions into the dream of the experts present, then dikenallah vehicle with high-pressure hydrogen fuel, with a combined system with Fuel Cell Hybrid with bateray, vehicles with this system is called Fuel Cell Hybrid Vechicles (FCHV).
Cars with this system in principle is a car with machine-generated electricity through a chemical reaction that combines hydrogen gas (H2) with oxygen gas (O2) obtained from the air. Meanwhile, the rest of the combustion is water making it very safe for the preservation of the environment because it does not contain hazardous materials such as carbon in its emissions.

Thursday, April 7, 2011

Working Principle of Microwave Oven

Microwave Oven is a home furnishings that have been commonly used in domestic life, for culinary purposes and so forth, but do you know how the microwave to warm and cook food? Here's his review.


Microwave Oven was first found (who supposedly called unwittingly) by Dr. Percy Spencer in 1946, one day Mr. Spenser (= I'm calling so yes ..^_^) working near a magnetron which is a tool that is used as a microwave generator in a radar system. Magnetron apparently leaked at a place, and when taking a candy from his pocket, he observed that the hard candy that had apparently been melted (melt), so that from the beginning this time he discovered that microwaves could be used and utilized for cooking.