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1 - technical press conference in press room 1 hour
2 - demonstration on roof top½ hour
3 - individual interviews ½ hour
the all event will be held in English and Cantonese
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Speakers
Dr Paul Cheung HK University mechanical engineering dpt Dr Dennis Leung HK University mechanical engineering dptDr Michael Leung HK University mechanical engineering dpt
Mr Eric Bohm CEO of WWF Hong KongMr Christian Masset Chairman of CLEAR THE AIR
Mr William Hutchinson Principal of the Hong Kong Sea School
Mr Doug Woodring Motorwavegroup.com and vice chairman of the environment dept of the American Chamber of commerce
Mr Lucien Gambarota Motorwavegroup.com
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South China Morning Post quote March 14th 2007
“” But wind power has one major problem: the exorbitant cost of power generation. At 0.5-0.6 yuan per kilowatt hour, real costs are roughly twice those of electricity produced in a conventional coal-fired power plant.
Moreover, wind farms are not as reliable as traditional power plants. Vestas' turbines need a wind speed of 4 metres per second to produce power, and 15 metres per second to reach maximum output of two megawatts. The Dongshan turbines are active for roughly 35 per cent of the year, which is considered good for an onshore site. “”
by Tom miller
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Analysis on wind power .
Wind power is a very mature technology ,but still under used .Reasons : conventional wind turbine technology are designed for winds of at least 10 m/sAt 15m/s the wind generator can be amortized in about 20 to 30 years at actual energy prices .
wind turbines are very expensive and very large in size
installation and maintenance are very complex .only professional trained staff can do it .
so our research has focused on how to develop a technology that can solve these issues
Small size wind generator that can work with low wind speed and that are easy to install and maintain
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Performances of one of the biggest wind turbine manufacturer : Windpower of Denmark
Real data are available from HK electric Lama wind generator
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The red bar is the wind speed in Hong Kong and in the world in general
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The blue bar is the wind speed in Tsim Tsa Tsui
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The green bar is the wind speed
in Ocean Park
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A) EfficiencyB) operating rangeC) performances for same surface and
m/s
kW
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C) performances for same surface andD) for the same price
m/s
kW
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And still these data about wind power do not reflect the reality .
Wind does not blow at constant speed . Wind comes in “ GUSTS “ . packs of air every 5 to 10 seconds .
Example of wind Gust in a US wind farm
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On a typical 3 floors 700 square feet house roof top we can install 60 to 100 turbines = 3 to 5 square meter .
On a typical housing estate building we can install 500 turbines to 1500 = 25 to 75 square meter .(Lama wind generator = 2000 square meter (diam 50m) )
we just need 25 to 80 buildings to have the same surface and we can produce 2 to 10 times the same power (depending on Wind speed) .
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Next step : a 46 cm turbine for higher productionand even lower cost
16 blades
8 blades
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oops
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What about showing a little bit of Hong Kong technology
when 3 billion people are in front of their TV and demonstrating that we care about
environment ?
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Differentpossibilities
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Water pump
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Air pressurepump
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Desalinisation by high saturated air
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Desalinization by low temperature low pressure
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Consumer product 8 turbines
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Consumer product20 turbines
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Consumer product performances wind speed in m/s and power in watt
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The first commercial application : to be build in March/April 2007 in Stanley .
The Hong Kong SEA SCHOOL Mr William Hutchinson
phase 1 setting : 360 turbines . 20 square meter rated 2.7 kW for 10m/s and 0.270 kW for 4.5m/s with 8 Batteries for storage of approx 8 kWh daily production :6.5 kWh . Annual production : 2.3 MWh . Saving in CO2 : 1 420 kgs .
Phase 2 setting of 1240 turbines
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WWF Hoi Ha Wan marine reserveMr Eric Bohm
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Mr Christian Masset Chairman CLEAR THE AIR
What in practical terms this technology could bring to Hong Kong .
How Green Groups could develop projects
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WHAT IS SO GOOD ABOUT THIS SYSTEM?
A) IT CAN BE MASS PRODUCED AND THEREFORE CHEAPER (10 TIMES CHEAPER)THAN THE OTHER EXISTING WIND TURBINES.B) IT WORKS WITH VERY LOW WINDS : STARTING AT 2 M/S WHERE CONVENTIONAL WIND TURBINES REQUIRES AT LEAST 7 TO 8 M/S IN HK THE AVERAGE WIND SPEED IS 5 M/S (18 KM/H OR 10 KNOTS)C) VERY HIGH EFFICIENCY : ABOUT 80% TO COMPARE WITH LAMA HK ELECTRIC WIND TURBINE OF 13.5 % D) IT CAN TAKE ANY SHAPES E) IT IS VERY LIGHT WEIGHT F) IT CAN BE INSTALLED ANYWHERE (THE OTHER NEED TO BUILD A ROAD )G) IT CAN BE “INVISIBLE” IF WE USE THE SAME COLOR AS THE BACKGROUND .H) IT CAN OCCUPY USELESS LAND (EXAMPLE THE FENCE SEPARATING HK AND MAINLAND)I ) IT CAN BE USED IN INDIVIDUAL HOMES ON THE ROOF TOP OR BALCONY OR GARDENJ) IT IS VERY EASY TO MAINTAIN