The optimization of any design is also expected to contribute to the Environment improvement. The old bulky designs say of steel required huge amount of carbon emmissions to produce the excess material.
I. Lightning Vs. Wind Turbines
Exactly when and where lightning will strike is an unpredictable act of nature. If scientists could calculate the exact location of future lightning, the United States would be able to avoid the $2 billion in annual property damage due to this awesome yet terrifying natural phenomenon. However, the fact that lightning usually… Continue
Added by Beth Chittum on December 30, 2009 at 5:30am —
This blog is meant for Friends in this Engineering Exchange Society.
Here we go……
There are two ways of Design Approach for the Cable Assembly.
1. Top Down Assembly ( for Complex and Real World Assembly, Define Wire, Connector, from the Diagram and auto routing ,etc….)
2. Bottom up Assembly ( Define Wire ,Connector, Route by Manually)
In this exercise, I will go for Second Method. I prepared some… Continue
To attain their highest possible capacity factor, wind turbines must be sited where they will be exposed to as much consistent wind as possible. An assessment must often show a site to annually have about 2,500 hours of wind at about 25 mph to make it viable for a utility company. Consequently, all parts of a wind turbine are subjected to extremes of weather, ozone, unusual stresses, and vibration. Things get worse offshore where they must also withstand the rigors of the sea including exposure… Continue
Leveraging Technology for Newer Applications
Cathy Wilson of the Gates Corporation speaks with Miles Budimir, Senior Motion Control Editor for Design World Magazine, about how you can leverage belt technology to increase the capabilities of your… Continue
Controversy has arisen around the House of Representatives’ approval of the American Clean Energy and Security Act (ACES) of 2009, also referred to as the Waxman-Markey bill. As you’d expect, many coal-powered utilities are taking a public stand against the bill which limits allowable carbon emissions, while firms with investments in carbon-neutral power production are big supporters. After much research and considering the effects of the ACES bill on the American economy and the environment,… Continue
Wind developers come in all sizes. For those who would like to offset their electric bills with a small turbine or two, local ordinances provide sufficient guidance and permission. But those who would like to install units capable of generating a few megawatts and more will have to do a little homework. The homework in this case is a site assessment. It gets a bit involved and take some time but the payoff is worth the effort.
Although many wind farms in the U.S. are generating electricity and well beyond a testing stage, their debugging continues. Many of these turbines suffer design-related failures within their first few years of operation.
Damaged bearings, for instance, can cause generator failures, which lead to unplanned downtime and costly repairs. If down for a month, a failed 1.5-MW generator can account for over $48,000 of lost revenue, and a single month’s wait for parts is unrealistically… Continue
Demand for wind turbines has spiked in the recent months/years due to two main drivers. The first is the ever rising cost of fossil fuels such as coal and natural gas. The other, the growing concern for climate change, although that might turn out to be bunk ;). As the demand for these systems increase, supply subsequently rises and efficiencies of a new product increase. One way electrical engineers… Continue
Standard wind turbine gearbox warranties generally last two to three years, and when they expire, operations and maintenance professionals become responsible for keeping the turbines running for the remainder of their service lives. Considering that the average wind turbine is expected to operate for up to 20 years, maintenance professionals are challenged to maximize equipment performance and minimize maintenance. So how do they do that?
Today, Andy Warren conducted a class at Autodesk University called "Using Inventor to Electrify the Grid." It was geared toward users who work for electric power utilities or engineering companies that do work for them. He taught how to use Inventor to design substations for power distribution. He covered designing lace-up type towers and bays, low profile design, and all of the switches, breakers, transformers, and insulators. He also showed how to test the clearances of all of the buses and… Continue
Wearing body armor for protection against bullets and shrapnel has been a double-edged sword for soldiers. While the armor provides an indispensable defense, its weight and placement on the body exposes the wearer to neck, shoulder and back discomfort, and possibly years of lingering pain. The problem is not just the armor, but also the heavy equipment that soldiers routinely wear for hours and days at a time that can weigh more than 60 lbs – including rifles, ammunition, grenades, radios,… Continue
I can't worry about damage to the moon,when our oceans continue to be used as a dump. Nonetheless, any gamer will tell you it's no fun unless there is a challenge. Engineers MUST find elegant, "safe" solutions because its the "right" thing to do. The easy, cheap, quick way is usually the dumbest and , indirectly, most costly.
Added by Walt Stanish on December 1, 2009 at 8:16am —