Energy

Slide 1: WHY DO WE NEED TO SAVE ENERGY?

Slide 2: Without Energy No Life

Slide 4: EARTH is a finite system

Slide 5: Nothing is created, Nothing is destroyed Everything is transformed

Slide 6: World's proven oil reserves are 1200 billion barrels Source : BP Statistical Review of World Energy 2007

Slide 7: + 600 billion barrels to extract from tar sands in Canada and Venezuela

Slide 9: The world consumption of oil…

Slide 10: …continues to growth Million Barrels of Oil a Day 3,0 90 Annual Consumption 88 2,5 Annual growth Rest of the 86 2,0 World 84 1,5 82 USA 80 1,0 78 0,5 China 76 74 0,0 72 -0,5 70 2000 2001 2002 2003 2004 2005 2006 2007 2008

Slide 11: With a world oil consumption growth of 1% per year …

Slide 12: wil l be ves ser il re sthan eo les rs … th ted in a us e xha y e 4 0

Slide 13: But… Remember! The only thing that we have to fear, it is that the sky might fall on our heads! … and precisely

Slide 14: In 200 years, we will have released in the atmosphere, the carbon that took nature 600 million years to trap CO2 1850 1900 1950 2000

Slide 15: The sea level has risen 15 to 20 cm over the 20th century and is going to rise another 18 to 59 cm by the year 2100

Slide 17: aw orld l ivin g in wth We are tia l gro n en ine xpo

Slide 18: 6.5 billion in 2005 5 billion in 1987 The world 4 billion in 1975 population 3 billion in 1960 is increasing 2 billion in 1930 1 billion in 1800 250 million in 1 5 million 10 000 bef. JC 5 000 bef. JC 0 1000 2005

Slide 19: The world energy consumption is increasing Rnv Energy Nuclear Natural gas Oil Coal Millions of toe 90% of fossil energy 1 million tonnes oil equivalent = 11.6 MWh Source : IEA, Mai 2007

Slide 20: Energy cost is increasing

Slide 21: How many Earths do we need ?

Slide 23: In Chinese, \"the word « crisis » is made up of two letters. One represents danger and the other opportunity\"

Slide 24: In only one day, the sun provides the Earth with the same energy to that consumed by humanity in 35 years

Slide 25: \"With Concentrated Solar Power Stations, one thousandth of the deserts surface would be sufficient to cover the world’s need in electricity\" Hans Müller-Steinhagen Head of the Institute of Technical Thermodynamics German Aerospace Center

Slide 27: These are the electric motors that consume the most energy in the industry 9% 4% Electrolysis Lighting Other uses 17% Electric motors 70%

Slide 28: The purchase cost of a motor is nothing in relation to its cost of use Purchase cost 2.5% Maintenance cost 1.5% Energy cost 96% Global Cost of an electric motor

Slide 29: … and these are mainly the frequency inverters that allow

Slide 30: ... to reduce the energy invoice while adapting the demand to the need

Slide 32: A centrifugal pump or a fan is characterized by

Slide 33: A flow proportional to the speed Qαv

Slide 34: Pressure Proportional to the square speed p α v²

Slide 35: Power proportional to the cube speed Pαv 3 p α v²

Slide 36: /2 A centrifugal pump or fan working to its nominal speed divided by 2, so, to the half of the maximal flow

Slide 37: /8 … has an energy consumption divided by 8

Slide 38: 30 up to 40% energy savings can be realized for a centrifugal pump or a fan

Slide 39: With a frequency inverter the working and service costs decrease

Slide 41: As of today, the manufactures consuming the most efficient electric energy …

Slide 42: … will be, the most competitive manufactures tomorrow

Slide 43: Now, you know

Slide 44: Thank You for your attention Philippe Châtel - Lenze