Kongress und Ausstellung für nachhaltige Produktion und Nutzung von Energie
22. - 24.05.2013, St. Gallen
Tage der Technik 2013
Thema: Strom, jetzt wird's spannend!
Hauptveranstaltung: Donnerstag, 3. Oktober 2013, EMPA Akademie, Dübendorf.
13.00 Uhr: Laborbesuche
14.00 - 18.15 UhrImpulsreferate und Präsentationen von ETH Spin:Offs.
Ab 18.15 Uhr: Netzwerk Apéro.
Aus dem ASHRAE Journal:
China approaches 2015 target with 41% wind power growth
09 April 2013
BEIJING: China has announced a 41% growth in electricity generated from wind power in 2012, which bumps the country closer towards its 2015 target.
China’s National Energy Administration statement says total wind power produced last year reached 11.8 billion kilowatt hours, which is a 41% increase on 2011’s 71.5 billion kilowatt hours. Grid-connected installed capacity also increased in 2012 to 62.7 gigawatts, a 31% jump from 47.8 gigawatts in 2011.
China is aiming to produce 190 billion kilowatt hours and install 100 gigawatts of grid-connected wind energy by 2015.
According to Pew research, China attracted US$29 billion in wind energy investment in 2011, which helped drive 20 gigawatts of new wind capacity in the country; almost half the 43 gigawatts of wind installed globally that year.
Changhua Wu, Greater China Director, The Climate Group said: "Renewable energy development and installations have become a proven, key part of China's efforts to decarbonize its economy. Challenges remain today that need to be addressed, but the progress so far made by the world's second-largest economy is exciting and encouraging.
"China's leadership and contribution will be well recognized in the global clean revolution. The Climate Group continues our steadfast commitment and efforts to support this process."
As well as approaching its 2015 wind target, China has also increased its 2015 solar power target from 21 gigawatts to 35 gigawatts.
No heating costs for future residents of 18 new low-energy houses
April 4, 2013
A solar cell system on the roof and a highly efficient Danfoss air/water heat pump means a surplus on the heating bill and enough energy to cover part of the electricity bill of – to begin with – 18 low-energy houses under construction in Denmark. The breakthrough element of the project is the ventilation of the houses.
Future residents of 18 low-energy houses under construction in the Danish town of Skive do not have to worry about their heating bills.
The houses will be installed with a solar cell system on the roof that generates 6,000 kWh annually.
The air/water heat pump and the ventilation system from Danfoss only use a total about 4,000 kWh annually to ventilate and heat the house.
The new houses are in the best insulation category, fulfilling the 2015 requirements regarding insulation and indoor comfort. However, the houses are still able to breathe; an intelligent ventilation system ensures constant ventilation, with humidity and room temperature deciding the intake of fresh air. And the heat recovery of the ventilation system utilizes the energy of the air that is sucked out.
The ventilation system is the breakthrough element in this. It is fully automatic and that is why it is not necessary to air the houses with the windows and doors open. This way, the heat losses are minimized. Instead, the ventilation system reuses the energy of the air, contributing to the low-energy concept. When the houses get warm during summer, a bypass damper opens in the ventilation system and lets in air from the outside.
2012 Warmest Year Ever in U.S.
ASHEVILLE, N.C.—2012 was the warmest year on record for the United States, the National Climatic Data Center announced Jan. 8. It broke the previous record for the warmest year, which was 1998. The average temperature for 2012 was 55.3°F (12.9°C), 3.2°F (1.8°C) above the 20th-century average, and 1°F (0.56°C) above 1998. The climate center also reported that 2012 was the driest year for the nation since 1988. U.S. weather records date to 1895.
Scientists Produce Temperature Below Absolute Zero MUNICH—Scientists have produced a substance with a temperature lower than absolute zero for the first time. Ulrich Schneider and colleagues from Germany's Ludwig Maximilian University created the subzero gas by arranging potassium atoms into a lattice using lasers and magnetic fields, then adjusting the magnetic fields, causing the atoms to attract, rather than repel each other as they normally would. This caused the temperature of the gas to drop a „few billionths of a Kelvin“ below absolute zero. "This suddenly shifts the atoms from their most stable, lowest-energy state to the highest possible energy state, before they can react," Schneider said. The research is published in the journal Science.
France to Turn Off Lights at Night to Save Energy PARIS—The "City of Lights" and elsewhere in France will shine less brightly as French President Francois Hollande and his energy minister plan to extinguish Paris’ trademark glow during overnight hours to save money and energy. The move is part of efforts to reduce France's energy consumption by 20% by 2020. The plan’s first phase took effect last July, forcing stores and businesses to turn off neon lights highlighting their names between 1 a.m. and 6 a.m. Critics say a dark Paris will encourage residents to stay home and tourists to go to bed earlier, hurting businesses.
Building Owners Increasingly Interested in Efficiency, Says Survey MILWAUKEE—Eighty-five percent of building owners and operators around the world depend on energy management to drive operational efficiency, according to a recent survey by Johnson Controls. According to The 2012 Johnson Controls Energy Efficiency Indicator, a global survey of 3,500 building owners and operators, this represents a 34-point increase in the last two years. Energy cost savings and financial incentives such as tax credits are the drivers most often cited by respondents. However, more than half say they are also looking to improve their companies' public image and increase the value of their buildings.