Saturday, March 3. 2007How Green is your Web Part IITrackbacks
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What about having your web site powered by solar....AISO (http://www.aiso.net) is 100% solar powered, both their servers and data center are powered by onsite solar panels. And they also have a partnership with Co-Op America, the U.S. Environmental Protection Agency, and the U.S. Green Building Council. Plus, they are doing more then just making sure their electricity is green. Their data center and office is green too by using environmentally friendly air conditioners, solar tubes to bring in natural light, a propane powered generator instead of diesel, VMWare virtualization to reduce their server electricity usage, 6 watt energy saving desktops computers for their employees, and soon to be LEED certified as a green data center, the only public one in North America, at least that I have found so far.
Solar is great assuming it has rational pricing....for eg in Germany there is a subsidy so the world solar panel production is being sucked up by a cold overcast country, putting prices up above payback in hot bright ones.
Passive energy efficient buildings are imho the real way to go re space efficiency, and again imho putting datacentres in very hot places is inefficient.
I agree, but only if you dont know what your doing. AISO is located in a desert area to maximize our solar panels' electricity production, we have very hot days. To counter-act this and conserve energy while maintaining cooling, we have chosen water cooled cooling systems. Our redundant cooling systems are built by a company called Freus, Inc. The Freus systems are water-cooled air conditioning systems, that based on test results are nearly twice as energy efficient as conventional air-cooled systems. Although water is used to assist with cooling, this technology is not related to the conventional Evaporative Air Coolers often called swamp coolers. Water is used to remove heat from the refrigerant and at the same time reduce the work of the compressor. Unlike air cooled units, which lose in the range of 25 percent of their rated efficiency at temperatures exceeding 100° F relative to their SEER rating, the efficiency of the Freus evaporative water cooled units have a minimal drop.
We have also added to the cooling systems, a custom cooling exchanger and sensors that monitor outside air temperature and when it gets below 60°F they suck the outside air in, filter it and direct it into the data center thus saving electricity when its cool outside. And since we are using VMWare for virtualization we have a ~30 virtual server to 1 physical server ratio, which cuts back on electricity usage and cooling requirements. Our data center and office building also has several layers of environmentally friendly insulation, which gives us an R-value equal to R 50. This high R-value keeps the cool air in and the hot air out, therefore reducing the amount of energy necessary to run our data center. This high R values gives us about a 20 degree difference in air temp from inside to ouside, for example if the air temp outside is 90 degrees then the inside air temp is about 70 degrees, without heating or cooling turned on. We will also be putting on a green roof ontop of our data center which will reduce our cooling requirments even more, plus help with the CO2 to O2 conversion. You can find out more here: http://www.aiso.net/commitment.asp |
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