Archive for May, 2009
Goes to the Animals: Vibration and Noise Control
Posted by Energy Saver in Green Energy Discussion on May 29th, 2009
Goes to the Animals: Vibration and Noise Control
Noise and vibration control is an issue that is much more common than one might originally think. In fact, it can creep up in the most unlikely of places. A good case in point is animal lab environments. Indeed, ALN Magazine recently ran an article titled “Noise & Vibration Considerations for the Animal Lab Environment.” Therein, the publication pointed out, “In the lab animal facility setting, noise, sound, and vibration affect the life cycle, interaction, and behavior of animals.” However, because “the impact of noise, sound, and vibration is a largely undocumented factor in the research,” it’s an often overlooked issue.
“If the sound pressure levels get too high,” the article continues, “there is a negative impact on animals and structures.” Vibration control, however, is just as important to these animals as noise control in that it “is a driving force behind radiated sound.”
Obviously, exposure to noise and vibration can be detrimental to an animal’s hearing, but the risks don’t stop there. “Sound and vibration can [also] have a physical impact on animals.” Even more startling, “Smaller animals are more susceptible to the affects of sound and vibration over time and will adapt or adjust accordingly. In some cases, mutations may result from exposure to undesirable conditions.”
How can animal laboratories mitigate these problems? The magazine notes, “The designers can control items that are constant disturbances that may greatly impact the animal community. Items within the designer’s control include ventilation system design, machinery vibration isolation, wall construction, lighting selection, and computer terminal placement.”
During the design process, animal labs may want to consult with a producer of custom-molded rubber and rubber-to-metal bonded parts for noise and vibration control. A world leader in the creation of rubber molding and rubber-to-metal bonded parts can help to create an environment that is not only safe for the animals being kept there but is also conducive to a healthy work environment for the people who are employed there.
The Vibro-Insulator line of isolators and mounts, in particular, aid in the control of noise, vibration, and shock. Selecting the right type of mount for an individual animal lab’s specific applications can prove tricky, however. That’s why consultation with an expert with reputable qualifications in rubber molding and rubber-to-metal bonding can be very beneficial.
Of course, once professional advice has been obtained, browsing the Vibro-Insulator catalog allows animal labs easy navigation so they can select the correct mount for their application. Rubber Vibro-Insulators come in a variety of styles and sizes to handle most vibration isolation problems. Most of the mount styles are designed to be used in either the compression or shear direction.
Selection of the proper Vibro-Insulator for a specific application boils down to a multi-step mathematical function that an expert can calculate for the lab or into which the lab’s design team can plug the following information:
1. The maximum load that must be supported.
2. The number of mounts supporting the load.
3. The frequency of the disturbing vibration.
4. Any restrictions on the size or style of the mount based on space limitations or assembly considerations.
Carmen Fontana is a Web Services Manager for Western Reserve Internet Services. Karman Rubber is a world leader in vibration control.
Green Technology - Bloomberg
How it Will Benefit Us All: Gasification
Posted by Energy Saver in Green Energy Discussion on May 27th, 2009
How it Will Benefit Us All: Gasification
If you search for gasification and terms like “wood stove†on video sharing sites these days you will see demonstrations of wood being burnt in little stoves which seem to something almost miraculous and quite different from our idea of wood as a fuel. These little boilers light rapidly, produce no detectable smoke after the initial lighting and firing, and burn very hot.
So what is the technique which is being used, and how might it help us all in weaning society off fossil fuels?
What you have seen is a method of gasification. It differs from combustion in that it uses just 20% to 30% of the air or oxygen necessary for complete fuel combustion. During gasification, the amount of air supplied to the gasifier is carefully controlled with the effect that only a small part of the fuel burns completely. Trials of this process have illustrated that up to 70% of the energy value of the fue used can be recovered as what is known as synthesis gas, or syngas. This producer gas can also be used for various applications similar to natural gas.
This is a part of the magic, and not one really shown in the YouTube type videos, but it makes this method even more useful. This is due to the fact that syngas can be put to useful work, in both drying the feed fuel prior to gasification and after collection and storage it can be used as a fossil fuel replacement, and renewable energy source. When a gasification plant also includes Combined Heat and Power (CHP) and/or electricity export from the site, the gains are even more impressive.
Gasification in addition promises to be the most efficient long-term solution for capturing carbon while utilizing these valuable feedstocks, and storing the CO2 for very long priods, to reduce or halt global warming.
Gasification of wood and wood-type residues and waste in fixed bed or fluidised bed gasifiers with subsequent burning of the gas for heat production is has become state of the art with designers of thes systems working hard to gain the absolute maximum efficiency out of these systems.
These wood gasifiers which are located primarily in the Scandinavian countries are used almost entirely for space heating heat generation. Gasification of biomass is the renewable fuel system preferred by many, and can be defined as the thermal conversion of solid biomass to gaseous fuel.
Gasification has been around for over a hundred years, but the benefits of biochar are only now being discovered. Furthermore, it is still a wide-open field.
Before electric lighting was available in cities there were street lamps fuelled by gasified coal. It is easy to forget that the process has been reliably used on a commercial scale worldwide for more than 50 years in the refining, fertilizer, and chemical industries, and for more than 35 years in the electric power industry. More than 75 companies involved in the development, licensing, and use of these technologies as well as engineering, construction, equipment manufacturing and production of synthesis gas by gasification from coal, petroleum coke, heavy oils and other hydrocarbons.
Gasification has been proven to be a viable technology for CO2 capture and reducing SOx, NOx, particulate matter, and mercury emissions from coal and petcoke-fired power plants, synthetic fuels production, and chemical facilities.
Plants in this category have been capturing carbon dioxide for several decades in chemical plants in China and the United States. It also has potential contributions to make to both transportation and electrical power energy markets. With ongoing concerns about the price and availability of oil, populous countries like the U.S. gasification has proven to be in high demand and quite successful. However, it can also be used in conjunction with gas engines and gas turbines to obtain a higher conversion efficiency than conventional fossil-fuel electric power generation. Gasification can help meet renewable energy targets, address concerns about global warming, and contribute to meeting global environmental targets.
Steve has built a great web site where there is a lot more information about gasification. This is a hot subject indeed for this technology which has become an essential read for all those in alternative energy and interested in taking action to reduce the impact of climate change.
Detroit Auto Show, WTOL News
Who’s Greener? Yahoo Vs Google
Posted by Energy Saver in Green Energy Discussion on May 23rd, 2009
Who’s Greener? Yahoo Vs Google
Silicon Valley is known for both innovation and hype. Recently, this pool of innovation has extended beyond bandwidth to the protection the environment. Google and Yahoo, the search engine giants, are both headquartered in the Valley and have been making headlines by greening their offices, reducing energy consumption, and carbon trading. The PR motivations are obvious, but are the green benefits really there? To set apart the hype from reality, we have analyzed the green value of both Google and Yahoo’s headquarter facilities.
We looked at the ecological services provided by green landscape features such as trees and open space (i.e. grass). Grass and trees are pervious surfaces, meaning they allow water to permeate into the ground. Roofs, sidewalks, patios, and asphalt parking lots are examples of impervious surfaces, where rainwater drains into the public storm drains. Heavy metals, oil, and other pollutants are carried off parking lots in rainwater, which often lead directly to open water habitats, where fish, birds, and reptiles live.
In terms of ecological services, trees and grass have been proven to:
1. Remove and store carbon from the atmosphere,
2. Remove certain airborne pollutants,
3. Permits rainwater to seep into the ground as opposed to draining into the stormdrains, and
4. Remove certain waterborne pollutants.
Here is a look at how green Google and Yahoo really are and how the measure up against each other.
Google Green Report
Google’s headquarters, the Googleplex, covers 44 acres, nearly 50% of which is grass or tree canopy. This is an impressive paved to open space ratio. The grass and trees on the Googleplex remove roughly 2 tons of carbon from the atmosphere per year, or 0.04 tons per year per acre. In addition, 530 lbs. of air pollution are removed per year (e.g., ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide, and particulate matter), or 12 lbs. per year per acre. It was assumed that the parking lot of the Googleplex is asphalt, and not a type of porous pavement, so the cost of managing rainfall runoff from the Googleplex is $4,474 per year, or $103 per year per acre. The abundance of grass and tree canopy on the Googleplex go a long way to offset the water quality impacts of the paved surfaces (mainly the parking lot). On average, the grass and trees reduce water pollution by 6%, as opposed to the entire property being paved.
Yahoo Green Report
The Yahoo headquarters, Yahooplex, covers 28 acres, a third of which is grass or tree canopy. This is a classic ratio of paved to open space for large office complexes in California. So far, par for the course. The Yahooplex removes 0.36 tons of carbon from the atmosphere per year, or 0.01 tons per year per acre. 114 lbs. of air pollutants are removed per year, or 4 lbs. per year per acre. In terms of rainfall, the cost associated with runoff is $9,219 per year, or $331 per year per acre. The grass and tree canopy help offset the paved areas with a 2.3% reduction in water pollution as opposed to the entire property being paved.
The final green analysis?
Google kicks Yahoo’s butt, largely due to the forethought, or luxury, of the Googleplex having 50% of its property surface providing green services. The good news for both Google and Yahoo is that over time, as trees grow, so will the tree’s canopy and mass, thus storing more carbon and removing more air pollutants.
Green next steps for both Google and Yahoo is to:
- Install porous parking surfaces, allowing up to 80% of rainwater to seep into the ground,
- Install green roofs, absorbing rainwater while reducing cooling costs and energy consumption, and
- Planting larger trees on the south and west sides of the buildings to reduce cooling costs and energy consumption.
While we crunched the hard numbers to settle the Google vs. Yahoo green debate, this report illuminates the great opportunity that awaits these two Silicon Valley giants to harness the ecological services of green surfaces.
Chris Erichsen is a GIS Mapping consultant with the Erichsen Group, GIS and Mapping in northern California. He has over 10 yrs of GIS experience and helps many industries around the world apply GIS mapping technology. Learn more examples of GIS mapping capabilities.
Food & Technology Key
China also needs to get on board.
Posted by Energy Saver in Green Energy Discussion on May 23rd, 2009
China also needs to get on board.
Our world is facing a huge crisis today in the form of global warming. Though most recognize that it is a bomb ticking away and awaiting to explode, few of us actually make an effort to change this dangerous trend. Lots of research and methods are being discovered and discussed but very few concrete steps have been taken yet. The major culprit is the industries that contribute maximum carbon dioxide and other dangerous gases to the environment. Although it is imperative that each of us do something to reduce our carbon footprint on earth, the industries and huge factories in the developing worlds should be forced to take up real concrete methods of curtailing pollution.
With rising population, the world has to increase production of materials and goods for all. This obviously calls for more and more industries in the world, which will only add more emitting pollutants to the atmosphere. The world needs to come together to work out solutions that can both save the environment and maintain economic development.
The problem of global warming represents a serious threat to the entire world. We are running out of time as warned by many scientists around the globe. People have created this problem by greatly increasing the greenhouse gases in the atmosphere; and people working together will be the only way to stop it.
As President Obama makes an effort to introduce and promote green enterprises and industries, he will face a startling fact. Most pollution is created by China and the developing world. So no matter how much the developed world reduces their carbon emission, countries like China will compensate it with more pollutants. The per capita emission has increased six times today thanks to industrial projects which do not follow minimum environmental laws and directives.
It is imperative that Chinese President Hu Jintao and the other world leaders start to outline a plan now that will be followed by most countries, particularly China, in going green in their business practices.
However, the problem facing the world is that if we tackle this problem from a micro level, we come face to face with industrialists who are trying very hard to make their business a success and increase profit. There is nothing wrong in that because more profit would mean greater investment and a stronger economy. But most of these factory/industrial owners do not take into account the bad effects of pollution due to the emissions and discharges from their units.
Scientists across the globe are insisting that the environmental costs should also be included in the production costs. But, unfortunately, the busy industrialists do not have time to take into account the social and environmental responsibilities of the company; and, hence, little to no effort is made by them to alter the situation. Forcing the overworked staff to look into ways to follow the green norms is not cost effective in the long run.
A better way to tackle the problem is to hire a Green Consultant. The Green Consultant would look into individual business practices and suggest concrete methods to reduce pollution and reduce wastage and improper use of resources. For a nominal fee the consultant would work throughout the year to move the business toward a successful GCI Green Building certification. However, because businesses differ in nature, region, demands, budget, etc., it would make sense that one approach for all may not work well.
Consult the Green Business League website to learn more about the consultant and their expertise.
Samm Parker is author of this article on Nationalgeographic.
Find more information about Global warming here.
Free Computers of Your Green Life Segment!
The Holy Reduction Grail
Posted by Energy Saver in Green Energy Discussion on May 22nd, 2009
The Holy Reduction Grail
The hard truth is that we all need to reduce. Reduce the amount of money we spend. Reduce the amount of food we eat…and our waistlines. And reduce the amount of stuff we throw away. In fact new we look at the 3 R’s of reduce, reuse, recycle, they are actually in that order for a reason. It is a hierarchy for a reason and reduce is the Holy Grail. Put in its simplest terms reduce means that we use less of the earth’s resources and in any environmental scheme should be our first priority.
That said, it is also the hardest to accomplish. When I thought about all the things we do to be greener, the number of examples of reducing stumped me. I suppose the most obvious example of our efforts to reduce was the decision some months ago, not to purchase an automobile. My husband has the use of a company van, but even that is rarely used. The difficulty comes when we want to go anywhere as a family. The work van has only one bucket seat in the front that fits three people. Obviously this presents difficulties. Even on our Saturday shopping trips with my mother-in-law, I end up sitting in the back of van; a solution that is both dangerous and illegal for the children. About a year ago, when I was working full-time, we were seriously considering buying a vehicle. But in the end, we thought the expense was too much when you consider not just payments, but insurance, road tax, maintenance and gas. Instead, we signed up for StreetCar; a car rental scheme that you pay a monthly fee to join and an hourly or daily rate only when you need to use a car or van. Looking back, that was one of the best decisions we have made both for the environment and family finances.
The other obvious example I found of reduction was our decision a year ago to switch to bags for life. We now have a stack of them beneath our kitchen sink and faithfully use them for our Saturday shops. But I do admit to occasionally forgetting them when just running out to grab something quickly. When this happens though, we make certain to re-use (we’ll talk more about that tomorrow) any plastic bags we get for outings or for small bin liners. Did you know that in the UK alone 100,000 TONNES of plastic bags are thrown away each year; that is the equivalent of 70,000 cars? So if there is one thing, I can encourage you to do, it is purchase bags for life. My store sells the sturdy plastic ones for about forty pence, the jute ones are about a pound, and the pretty cloth ones are about three pounds with a portion of the proceeds going to charity. Or it is very simple to make your own if you sew.
Speaking of which, sewing and mending our clothes is another excellent way of reducing. My boys from my husband to my sons are always wearing holes in their jeans on the inside thighs. Before the economic downturn, I admit we were likely to just toss them out and purchase new ones. But since I have not been working, we have instead taken them to the drycleaners and had them patched. The cost of the repairs is less than the cost of purchasing new (although I am committed to mending them myself from now on…a further savings). And we have reduced in a very small way the demand for jeans.
Of course, as I sit at my desk in my bedroom I am witnessing another reduction…the daylight streaming in through the open curtains. One of the first things I do each morning is open the curtains and the blinds. By using natural light when and where possible, we are reducing the amount of electricity that we consume and that the power grids must generate. We are also of course saving money on our bills. My husband is a genius at this; going around and turning off and unplugging everything he can each night before bed. I admit though that being American this whole switch on the plug thing still gets me and I often forget to do that, but I am improving. Of course, another example was turning down our thermostat during the winter and wearing heavier layers of clothes instead. In fact, I can think of only a couple of days this winter when we turned our heat on before night fall at all.
These are just a few ideas of ways that our family is reducing. There are many other things that we and you can do to cut back on the things we consume and help save our earth’s precious resources. On Friday as I said, we will do a mini-inventory and I will commit to new ideas on how our family can better live the 3 R’s reduce, re-use, recycle. I will be especially focusing on reducing since this is the most important of the R’s.
Terri O’Neale is the mother of six; ranging in age from 3 to 22. She has been both a working and stay-at-home mother at various times in her life. She was also a single mother for almost five years, before re-marrying the love of her life at the age of forty. Obviously, she has a life-time of training in raising a family on a tight budget. In addition to these real life experiences, she possesses a bachelors degree in health education and a minored in environmental management in her masters programme.
Terri feels strongly that this is one of the most challenging times in history for the family, but she also believes that families with the will and resolve to address the pressing issues of saving money, becoming greener, leading healthier lifestyles and spending more time with one another can endure these challenging times and come out victorious in the end.
Through Frugal Family articles, blogs, videos and social networking, she helps modern families rediscover some lost art forms such as cooking, sewing, and gardening. The goal is not to go back in time or become fanatical, but to help all families find simple and effective ways that fit into their lifestyle to make moderate changes with huge impacts. For more information, check out her blog http://frugalfam.wordpress.com/.
stove demo in Phuket