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l'énergie est partout dans les ordinateurs iphones et même dans les chaussures parfois mais parfois nous sommes très chanceux de l'avoir c'est par Aydin

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Kleiner Einstieg in die Physik

Mit Energie gehen wir täglich um. Energie wird „erzeugt", umgewandelt, transportiert, gespeichert und „verbraucht". Ohne Energie geht in unserem Alltag nichts. Aber wissen wir so genau, was Energie eigentlich ist?

Menschen nutzen Energie in vielfältiger Weise, für warme Wohnungen und helle Räume oder den Transport und die Produktion von Gütern. Jede Aktivität ist mit dem Umsatz von Energie verbunden. Die verschiedenen Erscheinungsformen von Energie sind uns daher aus dem Alltag wohl vertraut: Die Wärme des Feuers, das Licht der Sonne, die Bewegung des Windes. Dabei kann man „Energie" selbst nicht sehen, hören, schmecken, riechen oder fühlen. Wenn wir einen Blitz sehen oder in der Sauna schwitzen, dann erleben wir Energie. Das, was hinter diesen verschiedenen Erscheinungsformen steckt, nennen wir Energie. Aber was ist nun Energie?

Für die Physik ist „Energie" einer ihrer zentralen Begriffe. Physikalisch betrachtet ist Energie die Fähigkeit, Arbeit zu verrichten. Wenn ein Auto durch einen Motor angetrieben wird, dann wird mechanische Arbeit verrichtet. Die Arbeit leistet ein Verbrennungsmotor. Im Zylinder wird ein Benzin- Luftgemisch verbrannt. Die dabei entstehenden Abgase haben ein größeres Volumen. Der Druck steigt und kann in Bewegungsenergie umgesetzt werden. Chemische Energie wird in Bewegungsenergie umgewandelt.

Die Energieformen sind zumindest zum Teil ineinander überführbar: Aus chemischer Energie wird im Verbrennungsmotor Bewegungsenergie, aus Sonnenlicht wird in der Photovoltaikanlage elektrischer Strom. Energie kann von einer Energieform in eine andere umgewandelt werden, sie kann gespeichert und transportiert werden. Und dennoch ist sie kein Stoff. Als Wärme ist die Energie die ungeordnete Bewegung molekularer Teilchen, als elektrischer Strom die gerichtete Bewegung geladener Teilchen, als Strahlung elektromagnetische Wellen. Man kann Energie weder erzeugen noch verbrauchen, nur eine Energieform in eine andere überführen. In der Summe bleibt die Energiemenge gleich.

Genauer betrachtet ist das, was wir „Energieverbrauch" nennen, die Entwertung von Energie. Der Nutzwert der Energie kann durch Umwandlung und Transport abnehmen. Die im Erdgas gebundene chemische Energie wird beim Verbrennen in Wärme für die Beheizung eines Hauses umgesetzt. Wenn Wärme an die Umgebung abgegeben ist, ist sie nicht mehr nützlich, sie ist entwertet - wir sagen „verbraucht".

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Kleiner Einstieg in die Physik Mit Energie gehen wir täglich um. Energie wird „erzeugt", umgewandelt, transportiert, gespeichert und „verbraucht". Ohne Energie geht in unserem Alltag nichts. Aber wissen wir so genau, was Energie eigentlich ist? Menschen nutzen Energie in vielfältiger Weise, für warme Wohnungen und helle Räume oder den Transport und die Produktion von Gütern.

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Metering.com analyses the US energy efficiency market following ACEEE's rating indicating that it represents the country's 3rd largest power sector resource.

According to ACEEE, increased deployment of energy efficiency measures stand as key to a clean, reliable and affordable energy system in the US.

With the organisation calling for an increase in programmes to lift consumer awareness on energy efficiency, the sector seems to have recorded a rapid increase in ensuring grid stability in the North American country.

According to the findings of ACEEE's May 2016 Energy Review, 18% of electricity consumed in the US in 2015 was sourced from energy efficiency measures whilst 27% was generated from natural gas, 27% from coal, 16% from nuclear, 11% from renewable energy and 1% from other sources.

The segment is estimated to have resulted in $90 billion being saved in consumers energy bills and savings of up to $840 per household in 2015.

In addition, the sector avoided 490 million tonnes of carbon emissions by avoiding opening up of some 313 power plants since 1990.

Energy efficiency potential

However, ACEEE highlights its confidence in the segment becoming the country's leading source of power by 2030 if the country's three major energy efficiency policies are increased implementation.

The firm states that the US can by 2030 save energy equivalent to the construction of some 487 power plants by increasing consumer awareness and participation in energy efficiency programmes through the Appliance and Equipment standards, Utility Energy Efficiency targets of 1.5% per year and the Building Energy codes.

Combined with energy efficiency gains recorded since 1990, the country can save power amounting to the output of 800 power plants.

Market growth and energy efficiency at state level

But how has the country managed to expand its energy efficiency landscape?

It was due to various measures such as the use of state level energy efficiency policies in which federal governments set energy efficiency and carbon emission reduction targets for themselves.

Utilities' demand response and energy efficiency programmes, home and building energy management initiatives as well as projects by government agencies have largely contributed to the positive development.

On the state level, the US Department of Energy (DoE) has played a major role towards ensuring that states receive financial and regulatory support to meet their energy efficiency targets.

The DoE recently approved $3 million in energy efficiency funding to help states better energy conservation measures.

The capital is being issued to federal governments through the Federal Energy Management Programme. The states are using the capital to lower energy consumption in their small facilities by implementing projects such as replacement of lighting and HVAC systems and installation of solar PVs.

Due to the collaboration of various power stakeholders and government agencies in energy efficiency measures, records released in early August by the Department of Public Utilities and ACEEE highlight that the US state of Massachusetts continue to lead other states in energy efficiency since 2013.

The state has managed to save 3.9 million annual MWh of power and 78.7 million annual therms of natural gas as from 2013 through to 2015

The programmes have poured in $9.3 billion in economic benefits in the state and avoided 2.2 million tonnes of carbon emissions.

In July, by approving energy efficiency plans submitted by 10 utilities, the Massachusetts Department of Public Utilities said it aims to save $3.6 billion in electricity bills for its consumers over the next two years.

The state also partnered with energy intelligence software firm EnerNOC to lower usage in its 420 facilities including universities, administrative buildings, hospitals and court houses using the firm's technology.

Commenting on the signing of the $5.6 million project, Governor Charlie Baker said: "This innovative program further signals our commitment to using advanced technologies and cutting edge strategies to make state government more efficient, cost-effective and environmentally sound."

The state plans to reduce its carbon emissions by 25% by 2020.

Government agencies and energy efficiency

Federal government agencies have also engaged in various agreements to enhance their energy efficiency.

For instance, following a Business Green report that the US Army has saved $1 billion through energy efficiency programmes implemented in the past five years, the US Bereau of Prisons partnered with Siemens Government Technologies (SGT).

Under the partnership, the two are deploying energy efficiency measures at the government department's two correctional sites in Kentucky.

The measures to be implemented under the $38.6 million contract include installation of modern LED lighting, building automation systems, low-flow sink and shower fixtures, high-efficiency refrigeration systems, roof-top HVAC and laundry water recycling systems.

SGT claims implementation and integration of the programmes and technologies will save the federal government US$2,5m annually and is in line with mandates set by the White House stipulating that governments reduce their energy consumption by 2,5% and water consumption by 2% annually by 2025.

In New York, the New York State Energy Research and Development Authority signed a $30 million deal with energy management technology firm Noveda to help owners of office buildings, universities, hospitals and retail stores to cut energy, operations and management costs by 5% to 25%.

US cities and utilities like Colorado city, New York State Electric & Gas, Rochester Gas & Electric, National Grid and Con Edison have recently partnered with solutions providers to implement the programmes to help their residential customers lower usage and costs. [Con Edison signs new demand response programmes].

The Huntsville Utilities is also making use of $11.7 million loan secured from the Tennessee Valley Authority to install energy efficiency equipment to help its customers lower usage by 25%.

Despite the efforts by the US to boost the market, ACEEE ranked the country 8th in the world following countries like Germany which is the leading country.

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Energy efficiency third largest resource in US power sector

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Metering.com analyses the US energy efficiency market following ACEEE's rating indicating that it represents the country's 3rd largest power sector resource. According to ACEEE, increased deployment of energy efficiency measures stand as key to a clean, reliable and affordable energy system in the US.

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L'energie

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Energy sonore .

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Les ipad, et chromebooks
a de

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L'énergie est une ressource naturelle associée à divers éléments qui permettent l'utilisation industrielle de celle-ci. Le concept renvoie à la capacité de mettre en mouvement ou de transformer quelque chose.

Concernant la chimie, il s'agit de la composition, de la structure et des propriétés de la matière. Le terme permet également de nommer la science qui étudie ces aspects vis-à-vis des changements que la matière subie lors des réactions chimiques.

L'énergie chimique est donc celle qui est produite par des réactions chimiques. Un exemple d'énergie chimique est celle que le charbon dégage en état de combustion (lorsqu'il s'enflamme). Les piles et les batteries possèdent également de l'énergie chimique.

La chaleur qui est produite ou la violence de la réaction chimique produisent du mouvement ou permettent de développer un travail. Il est important de souligner que les aliments sont aussi une source d'énergie chimique, étant donné que lorsqu'ils sont générés par le corps, ils apportent de la chaleur (les calories), des protéines et des vitamines.

L'énergie chimique, en bref, est l'une des nombreuses manifestations de l'énergie. Bien que cette d'énergie soit toujours présente dans la matière, elle ne se manifeste que lorsque celle-ci souffre des modifications.

Les voitures, les avions et des millions de machines sont mobilisés grâce à l'énergie chimique dégagée lors de la combustion du charbon ou du pétrole. La configuration des moteurs, avec leurs cylindres et d'autres éléments, est la clé de tout le processus.

Ce type d'énergie permet même de voyager dans l'espace, ce qui démontre son importance dans divers domaines de l'action humaine.

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L'énergie est une ressource naturelle associée à divers éléments qui permettent l'utilisation industrielle de celle-ci. Le concept renvoie à la capacité de mettre en mouvement ou de transformer quelque chose. Concernant la chimie, il s'agit de la composition, de la structure et des propriétés de la matière.

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soleil

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-Le Soleil
-Foudre
-IPad
-Chromebook

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le soleil

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Energy est une élément qui nous aide à bouger et transporter les objets.
Un mot qui nous fait penser d'energie est puissance
.

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Gravité
Un "magnet"
Un feu
Nucliare
Un Ipad ou ordinateur

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Uc Riverside Energy GIF - Find & Share on GIPHY

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Discover & share this Science GIF with everyone you know. GIPHY is how you search, share, discover, and create GIFs.

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Force et electricite

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Electricite,gravite,lumiere

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Luka: Electricite,Soleil,Fils,Feu,Batteries,Moulin,Gravite,Ordinateur,Cable,Tonnerre,Foudre,Ampoule.

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Alexandra

un feu

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électricité