United States

ecowatch.com - by Brandon Baker - December 31, 2013

It wasn’t what Professor Mark Jacobson was saying—if you’re an advocate of renewable energy, you hear this kind of talk on a daily basis—as much as it was the platform. Solar and wind energy simply don’t get the late-night limelight.

insurancejournal.com - by Andrew G. Simpson - January 7, 2014

The U.S. Senate is expected to take a key vote soon on a bill that would delay some of the flood insurance rate hikes triggered by the Biggert-Waters Flood Insurance Reform Act of 2012. . .

. . . The procedural vote on S.1846 was originally planned for Wednesday, but the Senate is still dealing with an extension of federal unemployment benefits, delaying consideration of the flood bill. U.S. Sen. Mary Landrieu (D-La.), a major advocate for the bill, told USA Today that  “next week is more realistic” for any vote on the flood bill.

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Nets of Freedom creating mesh networks. Image: Strelka Institute / Flickr

wired.com - by Primavera De Filippi - January 2, 2014

The internet is weak, yet we keep ignoring this fact. So we see the same thing over and over again, whether it’s because of natural disasters like hurricanes Sandy and Katrina, wars like Syria and Bosnia, deliberate attempts by the government to shut down the internet (most recently in Egypt and Iran), or NSA surveillance.

After Typhoon Haiyan hit the Philippines, several towns were cut off from humanitarian relief because delivering that aid depends on having a reliable communication network. In a country where over 90 percent of the population has access to mobile phones, the implementation of an emergency “mesh” network could have saved lives.

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bge.apogee.net

An open-loop, ground-water heat pump, uses a surface or underground water source (such as a lake, river, or well) as the heat source and sink. Well water designs are the most common and seem to be the most cost effective. The well supplies both domestic water and water for the heat pump. Approximately three gallons per minute of well water are needed per ton of cooling capacity.

Ground water source open-loop heat pumps use the same concept as the ground coupled units - for example, in the Midwest the temperature of the earth near the surface and the water in it (aquifer) is typically around 55°F. Water is taken from the ground or surface water (pond, lake, etc.), circulated to the individual heat pumps and the returned to the ground via a disposal well, returned to the lake or pond, or where permitted discharged into a stream or river.

When more units are heating than cooling the circulating water temperature drops prior to disposal. Conversely, when more units are cooling than heating, the circulating water is warmed prior to disposal.

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