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A new heat engine with no moving parts is as efficient as a steam turbine（图）
运动部件 新型热机 蒸汽轮机 脱碳电网
2023/6/7
Engineers at MIT and the National Renewable Energy Laboratory (NREL) have designed a heat engine with no moving parts. Their new demonstrations show that it converts heat to electricity with over 40 p...
Microgrids,not always economically efficient in regulated electricity
Microgrids not always economically regulated electricity
2016/6/12
Installing a microgrid within a regulated electricity market will sometimes, but not always, provide an economic benefit to customers, investors and utilities involved, according to new research led b...
There is a growing need for the use of alternative and renewable energy sources, in terms of sustainable energy development. One of the potentially biggest renewable energy sources in Serbia is agricu...
EXPERIMENTAL ANALYSIS OF FUZZY CONTROLLED ENERGY EFFICIENT DEMAND CONTROLLED VENTILATION ECONOMIZER CYCLE VARIABLE AIR VOLUME AIR CONDITIONING
energy conservation thermal comfort indoor air quality
2009/10/14
In the quest for energy conservative building design, there is now a great opportunity for a flexible and sophisticated air conditioning system capable of addressing better thermal comfort, indoor air...
High-Frequency Cryocooler Is Tiny, Cold and Efficient
cryogenic refrigerator microelectromechanical systems
2007/2/28
February 15, 2007，A new cryogenic refrigerator has been demonstrated at the National Institute of Standards and Technology (NIST) that operates at twice the usual frequency, achieving a long-sought co...
Washington, DC (November 28, 2006) - If you are making a list and checking it twice this holiday season, make sure energy-efficient holiday lighting is on it. You'll enjoy all the color and joy of ye...
Optimization of the Synthesis Procedure of LiMn2O4 Electrodes for Efficient Rechargeable Lithium Cells: Influence of the Crystallite Size and Surface Defects on the Electrochemical Performances of 3 V Li1+xMn2O4 and 4V Li1-xMn2O4 Electrodes
Electrochemical model Li batteries nanocrystalline materials
2010/12/10
Various LiMn2O4 electrode materials, having different crystallite sizes ranging from ∼50Å to ∼500Å, have been investigated either in 3V or in 4V Li batteries. In agreement with...