Updated: 11/24/2005; 11:21:30 PM.

Future energy
Renewables, fuel cells, hydrogen, and efficiency

daily link  Monday, August 30, 2004

Technology already exists to stabilize global warming: Article published in Science identifies portfolio of options to cut emissions now.  They refer to a stabilization triangle composed of emission reduction wedges:  "Keeping emissions flat for 50 years will require trimming projected carbon output by roughly 7 billion tons per year by 2054, keeping a total of ~175 billion tons of carbon from entering the atmosphere [graphed as a triangle]. We refer to this carbon savings as the "stabilization triangle."

To keep pace with global energy needs at the same time, the world must find energy technologies that emit little to no carbon, plus develop the capacity for carbon storage. Many strategies available today can be scaled up to reduce emissions by at least 1 billion tons of carbon per year by 2054. We call this reduction a "wedge" of the triangle. By embarking on several of these wedge strategies now, the world can take a big bite out of the carbon problem instead of passing the whole job on to future generations. "

  4:28:43 PM  permalink  

Geothermal cooling for Toronto: "One of the world’s largest green heat systems has been commissioned in Canada’s largest city.  Enwave’s Deep Lake Water Cooling system can provide cooling for 130 office towers in the downtown core. The system pumps water of 4°C temperature from a depth of 83 m below Lake Ontario, which is used to chill Enwave's cooling plant before it is distributed to customers for air conditioning.

The earth energy system is used in cooling mode only, after which it is distributed for potable water consumption throughout the city. The project produces enough air conditioning for 20 million square feet of office space, and initial customers include the Air Canada Centre, Metro Toronto Convention Centre, Royal Bank Plaza, TD Centre and Steam Whistle Brewing. .. Compared with traditional space cooling, the system reduces electricity use by 75% and will eliminate 40,000 tonnes of CO2, equal to taking 8,000 cars off of the streets. It also frees 59 MW from the Ontario electrical grid."  4:15:19 PM  permalink  

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Copyright 2005 © Ken Novak.
Last update: 11/24/2005; 11:21:30 PM.