Green IT For Dummies Cheat Sheet
You can promote a green IT environment by reducing energy consumption, reducing your CO2 emissions, and promoting environmentally friendly computing products and practices. Complying with recommend temperature ranges in your data centers and assessing your energy use (and needs) are the first steps to making your IT department more green.
U.S. Primary Energy Consumption by Source and Sector, 2007
Energy is consumed in the U.S. in four major areas: transportation, industrial, residential, and commercial, which is monitored by the Department of Energy. As populations grow, so does energy consumption — putting more and more pressure on the environment and hopefully adding more incentive to promote green information and technology (IT). Take a look at how the U.S. uses primary energy sources as a whole.
CO2 Emissions by Fossil Fuels Annually per Capita
When carbon dioxide emissions are released into the atmosphere, they trap heat from the sun and contribute to global warming. Working towards environmentally-friendly information technology (IT) reduces energy use and CO2 emissions. Check out the following chart to see the different amounts of CO2 emissions from fossil-fuels contributed per capita in countries throughout the world.
|Region/Country||Emissions per Capita|
|Asia and Oceania||.78|
Metric Tons Carbon Equivalent, 2005
Data Center Temperature and Humidity Range Recommendations
In consulting with computer manufacturers, the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), changed its recommendations for air temperatures in data centers and computer room humidity. The following chart shows new recommendations for safely maintaining IT equipment.
|Maximum relative humidity||60 percent|
|Maximum dew point||59°F||15°C|
|Minimum dew point||41.9°F||5.5°C|
|Dew point depression at 60 percent R.H., 20°||8.5°C||14.3°F|
Converting Energy and Power Measurements
Information technology — computers and related equipment — is the largest energy consumer in many organizations. Because generating electricity impacts the environment in a big way, wise power use is IT’s biggest green concern and opportunity. A key step in making your IT department greener is assessing its current energy use and needs. The following tables explain how to convert common energy measurements so that you can convert various power measurements into a common measurement when needed, as you assess your energy needs.
|Energy From||Energy to BTUs||Energy to Kilojoules||Energy to Kilowatt-Hours|
|Power From||Power to BTU/Hour||Power to Watts||Power to MWh/Year|