Since the 1990s the EU has been pursuing climate change mitigation targets. Following the
international commitment to the legally binding greenhouse gas reduction under the Kyoto
Protocol, the 2020 policy package consists of a set of binding legislation to ensure that the EU
meets its climate and energy targets for the year 2020. The package sets three key targets: 20%
reduction in greenhouse gas emissions (from 1990 levels), 20% of EU energy from renewables (as
well as a 10% target for renewable fuels) and 20% improvement in energy efficiency. The targets
were set by EU leaders in 2007 and enacted in legislation in 2009 3 . They are also headline targets of
the Europe 2020 strategy for smart, sustainable and inclusive growth.
Commercial energy storage has moved from the margins to the mainstream as it
fosters flexibility in our smarter, increasingly integrated energy systems. The
energy density, availability, and relatively clean fossil profile of natural gas ensure
its critical role as a fuel for heating and electricity generation. As a transportation
fuel, natural gas continues to increase its market penetration; much of this has been
enabled by emerging developments in storage technology.
This book is based on a Ph.D. research that has been conducted at the Delft
University of Technology in the Netherlands in collaboration with Dutch Electricity
& Gas Distribution Network Operator, Stedin. This book was written as a result of
wider interest that was shown by different industry groups on this topic after its
public defence. This inspired the author to modify and publish a practical version
of the research for a greater international audience. Therefore, the content of this
book is intended for a double audience, on the one hand for those interested in the
organisational and management aspects of maintenance.
In order to enhance the efficiency and reliability of the power grid, diversify energy
resources, improve power security, and reduce greenhouse gas emission, many
countries have been putting great efforts in designing and constructing their smart
grid(SG) infrastructures.Smart gridcommunicationsnetwork(SGCN) is oneof the
key enabling technologies of the SG. However, a successful implementation of an
efficient and cost-effective SGCN is a challenging task
Sound is simply an airborne version of vibration. The air which carries sound is a mixture
of gases. In gases, the molecules contain so much energy that they break free from
their neighbors and rush around at high speed. As Figure 1.1(a) shows, the innumerable
elastic collisions of these high-speed molecules produce pressure on the walls of any
gas container. If left undisturbed in a container at a constant temperature, eventually the
pressure throughout would be constant and uniform.
文章提出了一種基于AT89S51單片機(jī)的智能家居系統(tǒng)的設(shè)計,該系統(tǒng)具有室內(nèi)煤氣以及煙霧的檢測、家庭室內(nèi)防盜等功能。文章詳細(xì)分析了系統(tǒng)的總體設(shè)計,詳盡分析并設(shè)計了煤氣傳感器模塊、煙霧傳感器模塊、人體紅外感應(yīng)傳感器模塊、報警模塊等各硬件部分,并利用PROTUES軟件進(jìn)行了系統(tǒng)仿真。仿真結(jié)果證明:系統(tǒng)具有成本低、效率高、操作方便等優(yōu)點,達(dá)到了預(yù)期設(shè)計的效果。This paper presents the design of an intelligent home system based on AT89S51 microcontroller.The system has the functions of detecting indoor gas and smoke,guarding against theft in the home,and so on.The overall design of the system is analyzed in detail.The gas sensor module,smoke sensor module,human infrared sensor module,alarm module and other hardware parts are analyzed and designed in detail,and the system simulation is carried out using PROTUES software.The simulation results show that the system has the advantages of low cost,high efficiency,convenient operation and so on,and achieves the expected design effect.
