Posts Tagged ‘energyandenvironment’

The Roman Republic Was Teetering. Then a Volcano Erupted 6,000 Miles Away. – The New York Times

July 7, 2020

A radiative cooling structural material | Science

April 19, 2020


A stronger, cooler wood

One good way to reduce the amount of cooling a building needs is to make sure it reflects away infrared radiation. Passive radiative cooling materials are engineered to do this extremely well. Li et al. engineered a wood through delignification and re-pressing to create a mechanically strong material that also cools passively. They modeled the cooling savings of their wood for 16 different U.S. cities, which suggested savings between 20 and 50%. Cooling wood would be of particular value in hot and dry climates.

interesting material for anti-insulation

Сurrent weather and forecast – OpenWeatherMap

February 22, 2020

CO emissions

February 16, 2020

NYC doesn’t look that great either—add-more-layers/overlays?cosc,17.289,99.356,3

January 2020 was Earth’s hottest January on record | National Oceanic and Atmospheric Administration

February 13, 2020

How to stop data centres from gobbling up the world’s electricity

September 29, 2019


“The savings made by hyperscale centres can be seen in their power usage efficiency (PUE), defined as the total energy needed for everything, including lights and cooling, divided by the energy used for computing (a PUE of 1.0 would be a perfect score). Conventional data centres typically have a PUE of about 2.0; for hyperscale facilities, that’s been whittled down to about 1.2. Google, for one, boasts a PUE of 1.12 on average for all its centres.

Older or less technologically adept data centres can contain a mix of equipment that is hard to optimize — and some that is even useless. In 2017, Jonathan Koomey, a California-based consultant and leading international expert on IT, surveyed with a colleague more than 16,000 servers tucked into corporate closets and basements and found that about one-quarter of them were “zombies”, sucking up power without doing any useful work — perhaps because someone simply forgot to turn them off. “These are servers sitting around doing nothing except using electricity, and that’s outrageous,” says Koomey.”

Hands on: Atmotube Pro, an iPhone-connected portable air quality alert system

July 7, 2019

similar to awair
Hands on: Atmotube Pro, an iPhone-connected portable air quality alert

Climate change is happening, but how fast? This is what we really know | New Scientist

June 30, 2019

Efforts to make buildings greener are not working

February 9, 2019

“One reason is the rebound effect. Insulate buildings better, and people will wear fewer layers rather than turn the heat down. The way energy-efficiency schemes are structured does not help, argues Richard Twinn of the UK Green Building Council, a think-tank. The schemes only finance a single type of upgrade at a time, such as loft insulation. A whole-house retrofit, in contrast, could have added digital
thermostats to ensure that greater efficiency was converted into lower bills rather than higher temperatures.”

Efforts to make buildings greener are not working

Lego Wants to Completely Remake Its Toy Bricks (Without Anyone Noticing) – The New York Times

September 25, 2018