30 Mar '12, 9am

Energy Nerd: Energy Modeling Isn’t Very Accurate

Energy Nerd: Energy Modeling Isn’t Very Accurate

Low or absent estimates for thermal regain. Blasnik explained that energy models underestimate thermal regain from basements and crawlspaces. “Most models get big things wrong, like how basements and crawlspaces work,” he said. “Vented crawl spaces usually aren’t at the outdoor temperature. When the outdoor temperature is 10 degrees, a vented crawl space can be at 50 degrees. Why is it that when you insulate a basement ceiling, you get very little savings — maybe zero savings, or maybe $20 a year? Well, if you have a furnace and ductwork in the basement, you are regaining a lot of the heat given off by the furnace and ducts, due to the directional nature of air leakage in the wintertime. The stack effect Also referred to as the chimney effect, this is one of three primary forces that drives air leakage in buildings. When warm air is in a column (such as a building), its bu...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/musings/en...

Tweets

Paging Little Miss Muffet: Energy from Cheese Waste

Paging Little Miss Muffet: Energy from Cheese W...

renewableenergyworld.com 30 Mar '12, 2pm

The most common waste-to-energy method is to employ methane-excreting bacteria in anaerobic digesters to turn farm waste l...

#Energy policy in tatters as two more companies scrap plans for new #nuclear

#Energy policy in tatters as two more companies...

greenpeace.org.uk 29 Mar '12, 11am

This morning two more energy companies abandoned their plans to build new nuclear power stations in the UK. It’s left the ...

Sell Wind ETFs if Support is Violated: Filed under: Energy News

Sell Wind ETFs if Support is Violated: Filed un...

altenergystocks.com 28 Mar '12, 11pm

Both Wind ETFs are showing interesting chart patterns. In the PowerShares Global Wind Energy Portfolio (PWND ) chart we ca...

First buildings certified "Net Zero Energy"

edcmag.com 04 Apr '12, 3pm

Two projects, both existing building retrofits, have completed the first full set of third-party audits for Net Zero Energ...

12 Years Later — Solar Energy in Germany (VIDEO)

cleantechnica.com 27 Mar '12, 1pm

I think the US was that smart… more than a decade earlier And many parts of the US also adopted Feed in Tarrifs and try to...

Bukit Brown: Democracy isn’t a ballot paper

Bukit Brown: Democracy isn’t a ballot paper

newasiarepublic.com 25 Mar '12, 3pm

Democracy is more than just a ballot paper Democracy is not a ballot paper that comes once every 5 years. Democracy is not...

CaGBC - English | Buildings: Thermal Energy Pro...

cagbc.org 31 Mar '12, 11am

Home/Accueil CaGBC National Conference Conference Program & Registration Program Buildings: Thermal Energy Producers Build...

Domain privacy isn’t free, Thursday edition

domainnamewire.com 22 Mar '12, 2pm

Kraft gets domain for snack division spin-off for just $10 Domain privacy isn’t free, Thursday edition New TLD registratio...

Stats: Energy Trends and Quarterly Energy Price...

decc.gov.uk 29 Mar '12, 8am

Energy Trends and Quarterly Energy Prices publications are published today 29 March 2012 by the Department of Energy and C...

Now hear this: The Army isn’t abandoning LEED

Now hear this: The Army isn’t abandoning LEED

greenbiz.com 03 Apr '12, 4am

Can a misstatement travel halfway around the world before the facts put on their (Army) boots? You bet your bazooka. Last ...

If we want a renewable energy future, we must s...

e360.yale.edu 29 Mar '12, 12pm

U.S. Fossil Fuel Boom Dims Glow of Clean Energy A surge in gas and oil drilling in the U.S. is helping drive the economic ...

Wind Energy Today: A Look at Wind Energy Projects Around The World

Wind Energy Today: A Look at Wind Energy Projec...

treehugger.com 29 Mar '12, 2pm

Over the past decade, wind power has really taken off. According to the World Wind Energy Association , at the end of 2011...